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Standard Scientific Research and Essays (SSRE) Table of Content: December Special Issue 2014; Volume 2 Issue 13

Loutfy H. Madkour and ElrobySK

Correlation between corrosion inhibitive effect and quantum molecular structure of Schiff bases for iron in acidic and alkaline media

Stand. Sci. Res. Essays 2014 2(13): 680-704 [Abstract] [Full Text-

PDF] (984 KB)

Standard Scientific Research and Essays Vol. 2(13), pp. 680-704 December Special Issue 2014 (ISSN: 2310-7502)

Copyright © 2014 Standard Research Journals

http://standresjournals.org/journals/SSRE/Content/2014/december_special_issue.html

http://standresjournals.org/journals/SSRE/Abstract/2014/december_special_issue/Madkour%20and%20Elroby.html

Review article

2

Correlation between corrosion inhibitive effect and quantum molecular structure of Schiff bases for iron in acidic and alkaline media *1Loutfy H. Madkour and 2ElrobySK 1Department of Chemistry, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box1988 Al-Baha, Saudi Arabia 2Department of Chemistry, Faculty of Science, King Abdul-Aziz University, P.O. Box 80203 Jeddah 21589 Saudi Arabia *Corresponding E-mail address: loutfy_madkour@yahoo.com, Tel. +966 541945518; Fax: +966 77247272 Accepted 14 December 2014

Abstract Quantum chemical calculations using the density functional theory (DFT) have been applied to the five kinds of polydentate Schiff base compounds (PSCs), act as inhibitors for iron in aerated 2.0 M HNO3 and 2.0 M NaOH media. The structural parameters, such as the frontier molecular orbital energy HOMO (highest occupied molecular orbital), LUMO (lowest unoccupied molecular orbital), energy gap ∆E (ELUMO - EHOMO), the charge distribution, the absolute electronegativity (χ), the fraction of electrons transfer (∆N) from inhibitors to iron, the dipole moment (µ), the global hardness (η) and the total energy (Etotal) were also calculated and correlated with their inhibition efficiencies (%IE). The inhibition effects of (PSCs) may be explained in terms of electronic properties. The results showed that the (%IE) of PSCs increased with the increase in EHOMO and decrease in ELUMO - EHOMO. The inhibitor molecules were first adsorbed on the iron surface and blocking the reaction sites available for corrosive attack; and the areas containing N and O atoms are most possible sites for bonding by donating electrons to the iron surface through interaction with π-electrons of the aromatic rings, and the azo methine group. Also, the adsorbed Schiff base molecules interact with iron ions in the corrosive media leading to neutral and cationic iron-Schiff base complexes. Adsorption process is spontaneous, exothermic and obeyed Temkin isotherm and regarded as physical as chemical mechanism. The polarization studied indicated that the inhibitors act as a mixed type inhibitor in HNO3; cause only inhibition of the cathode process in NaOH, and the magnitude of the displacement of the Tafel plot is proportional to its concentration. Models for the inhibition corrosion behaviour were developed based upon statistical analyses of the experimental data. Some thermodynamic and kinetic parameters (Kads, ∆Gads) were estimated. Both experimental and quantum theoretical calculations are in excellent agreement. The inhibition efficiency increase in the order of: PSC_1 > PSC_2 > PSC_3 > PSC_4>PSC_5. Thus, DFT study gave further insight into the mechanism of inhibition action of PSCs. This research might provide a theoretical inhibition performance evaluation approach for homologous inhibitors. Keywords: Corrosion inhibitor, Quantum chemical, DFT method, Schiff bases adsorption, Molecular orbital, Iron electrode, Temkin isotherm

3

Loutfy H. Madkour and Zinhome UA

Inhibition, kinetic and thermodynamic effects of new Azo derivatives on iron corrosion in acidic and alkaline solutions

Stand. Sci. Res. Essays 2014 2(13): 705-724 [Abstract] [Full Text-PDF] (1.2

MB)

http://standresjournals.org/journals/SSRE/Abstract/2014/december_special_issue/Madkour%20and%20Zinhome.html

Review article

Inhibition, kinetic and thermodynamic effects of new Azo

derivatives on iron corrosion in acidic and alkaline

solutions

*1Loutfy H. Madkour and 2Zinhome UA

1Chemistry Department, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box. (1988), Al-Baha, Kingdom

of Saudi Arabia

2Chemistry Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt

*Corresponding author E-mail: loutfy_madkour@yahoo.com; Tel. +966 541945518; Fax: +966 77247272

Accepted 14 December 2014 Abstract

This investigation is designed to apply an advanced kinetic-thermodynamic model on the experimental data obtained from acidic and alkaline corrosion of iron using mono- and bis-azo dyes as corrosion inhibitors. The inhibition properties of the tested azo dyes on corrosion of iron in HNO3 and NaOH media were analyzed by gravimetric, thermometric and polarization measurements. The three studied methods gave consistent results. Polarization study showed that all the inhibitors are mixed type in acidic, act mainly as cathodic in alkaline solution. The synthesized azo dye derivatives exhibit good inhibition properties, obeys the Frumkin adsorption isotherm. The large values of the change in the standard free energy of adsorption (∆Go

ads), equilibrium constant (Kads) and binding constant (Kb) revealed that the reactions proceed spontaneously and result in highly efficient physisorption mechanism and stronger electrical interaction between the double layer existing at the phase boundary and the adsorbing molecules. The inhibition efficiency depends on the number of adsorption oxygen sites (OH and OMe groups), their charge density and π-electron clouds. The inhibition efficiency evaluated via theoretical methods was well accorded with reported experimental ones, following the same

order as: naphthyl- ligand >-naphthyl>p-anisdine>p-toluidine >o-toluidine >m-toluidine derivative. This research might provide a theoretical inhibition performance evaluation approach for homologous inhibitors. Keywords: Corrosion, inhibitor, mono- and bis-azo dyes, iron, HNO3, NaOH

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Journal of Geochemistry

Volume 2014 (2014), Article ID 451782, 10 pages

http://dx.doi.org/10.1155/2014/451782

http://www.hindawi.com/journals/jg/2014/451782/

Research Article

Electro-Thermal and Semiconductivity Behaviour of Natural Sintered

Complex Carbonate Ore for Thermo-Technological Applications

Loutfy H. Madkour

Chemistry Department, Faculty of Science and Arts, Baljarashi, Al-Baha University, P.O. Box 1988, Al-

Baha, Saudi Arabia

Received 9 September 2013; Revised 8 December 2013; Accepted 6 January 2014; Published 5 March

2014

Academic Editor: Miguel A. Huerta-Diaz

Copyright © 2014 Loutfy H. Madkour. This is an open access article distributed under the Creative

Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any

medium, provided the original work is properly cited.

Abstract

The polymetal (Zn, Pb, Fe, Ca, Mg, Cd, Ba, Ni, Ti, and SiO2) complex Umm-Gheig carbonate ore is

subjected to sintering treatment at 573, 773, 973 and 1273 K respectively for four hours. Chemical, spectral,

X-ray and differential thermal analyses are applied for the native ore as well as for the samples preheated

and sintered. The current versus applied DC voltage (I–V) characteristics, bulk density (Db), percent

shrinkage (%S), activation energy (Ea) and energy gap (Eg) are established for the sintered ore. The

electrical conductivity(σ), thermal conductivity (K) and thermoelectric power coefficient (α) have been

investigated as a function of applied temperature for the sintered ore materials. The electrical conduction is

mainly achieved by free electrons near or in conduction band or n-type. As the sintering temperature (Ts)

increases the conduction of the ore is also increased due to the recombination process taking place between

the electrons and holes. Electrons hopping between Fe2+ and Fe3+ are the main charge carriers. The formation

of Fe3O4 at high sintering temperature acts as an active mineralizer, thus inducing an increased degree of

crystallinity and a more ordered crystal structure is produced.

http://www.hindawi.com/journals/jg/2014/451782/

5

1

Thermodynamic behaviour of complex antimonite ore for electrodeposition

of metal value

★★★★★

German National Library of Science and Technology (GetInfo)

Madkour, L. H.

BL OC

1997-01-01

2

Electrolytic separation of lead and its dioxide from carbonate ore residuum

★★★★★

German National Library of Science and Technology (GetInfo)

Madkour, L. H.

BL OC

1995-01-01

3

Electrolytic extraction of uranium from Egyptian phosphorites

★★★★★

German National Library of Science and Technology (GetInfo)

Madkour, L. H.

BL OC

1995-01-01

4

Electrolytic recovery of antimony from natural stibnite ore

★★★★★

6

German National Library of Science and Technology (GetInfo)

Madkour, L. H.; Salem, I. A.

BL OC

1996-01-01

5

Synthesis and Characterization of 2,2'-Biimidazole Complexes of Oxocations

of Molybdenum (VI, V) and Uranium(VI)

★★★★★

German National Library of Science and Technology (GetInfo)

Kandil, S. S.; Madkour, L. H.

BL OC

1993-01-01

6

Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and

nitrogen containing compounds

★★★★★

German National Library of Science and Technology (GetInfo)

Madkour, L. H.; Ghoneim, M. M.

BL OC

1997-01-01

7

Electrodeposition of lead and its dioxide from egyptial carbonate ore

residuum

★★★★★

German National Library of Science and Technology (GetInfo)

7

Madkour, L. H.; Society for the Advancement of Electrochemical Science and

Technology

BL CP

1996-01-01

8

Inhibitory Effect of Some Carbazides on Corrosion of Aluminium in

Hydrochloric Acid and Sodium Hydroxide Solutions

★★☆★★

German National Library of Science and Technology (GetInfo)

Fouda, A. S.; Madkour, L. H.; Elasklany, A. H.

BL OC

1995-01-01

9

Inhibition Effect of Hydantoin Compounds on the Corrosion of Iron in

Nitric and Sulfuric Acid Solutions

★★☆★★

German National Library of Science and Technology (GetInfo)

Madkour, L. H.; Hassanein, A. M.; Ghoneim, M. M.

BL OC

2001-01-01

10

Corrosion Inhibitors for Zinc in 2 M HCl Solution

★★☆★★

German National Library of Science and Technology (GetInfo)

Fouda, A. S.; Madkour, L. H.; El-Shafei, A. A.

8

BL OC

1995-01-01

11

Inhibition of the acid corrosion of iron with haloacetic acids

★★☆★★

German National Library of Science and Technology (GetInfo)

El-Gaber, A. S.; Madkour, L. H.; El-Asklany, A. H.

BL OC

1997-01-01

12

Inhibition of Copper Corrosion by Arylazotriazoles in Nitric Acid Solution

★★☆★★

German National Library of Science and Technology (GetInfo)

Madkour, L. H.; Elmorsi, M. A.; Ghoneim, M. M.

BL OC

1995-01-01

13

Thermo-physical studies on ilmenite ore for mass production of ceramic

capacitors

★★☆★★

German National Library of Science and Technology (GetInfo)

Madkour, L. H.; Abou-Sekkina, M. M.; Hemeda, O. M.

BL OC

1996-01-01

9

Professor Loutfy Hamid Madkour Professor of Physical Chemistry, Saudi Arabia ORCID 0000-0002-3101-8356

Personal Information

Biography Professor LOUTFY HAMID MADKOUR Scopus Author Identifier: 6701732721 Professor of

Physical Chemistry, Saudi Arabia ORCID 0000-0002-3101-8356 Prof. LOUTFY HAMID

MADKOUR Professor of Physical Chemistry and Electro analytical Chemistry. Scopus Author

Identifier: 6701732721 E-mail: Loutfy_madkour@yahoo.com Mobile: 002/01008808079 (Egypt).

Mobile: 00966/532598878 (Saudi Arabia). Prof. LOUTFY H. MADKOUR graduated as B. Sc.

Chem. in 1972 at Cairo University and as M.Sc. Electrometallurgy at Menia University in 1979. In

1982 He obtained his Ph.D.in Physical and Electro analytical chemistry at Tanta University. Prof.

Dr. MADKOUR, s special research interests are: Physical chemistry, Electrochemistry, Corrosion,

Electrometallurgy, Electro analytical chemistry, Analytical chemistry, Polarography, Electrolytic

extraction of heavy metals from natural ores and deposits, electrochemical thermodynamics, and

Environmental chemistry. Prof. MADKOUR is serving in different positions in Egypt, Republic of

Yemen, Kuwait and Kingdom of Saudi Arabia. Prof. LOUTFY. H. MADKOUR joined now again

from 24 Oct. 2012 as Professor for Physical and Electro analytical Chemistry. at Chemistry

Department, Faculty of Science and Arts, Baljarashi, Al-Baha University P.O. Box 1988, Al-Baha,

Kingdom of Saudi Arabia (KSA) till now. Biography Updated on 16 March 2015 Scholarly.

Contributions [Data Provided by

Copyright © 2014 SAGE-Hindawi Access to Research. All rights reserved.

Scopus FeedbackTerms and Conditions Privacy Policy Copyright © 2013 - 2014 Elsevier B.V. All rights reserved. Scopus ® is a registered trademark of Elsevier B.V.

Author profiles

Name Author ID Total Correct

Madkour, Loutfy H. 7003686193 172 172

10

Articles per profile: Madkour LH

Madkour, Loutfy H. (7003686193) Doc ID Year Correct

Aminic nitrogen- bearing polydentate Schiff base compounds as corrosion

inhibitors for iron in acidic and alkaline media: A combined experimental and

DFT studies

Madkour, L.H. Elroby, S.K.

8489238966

9

(2014) y

Electro-Thermal and Semiconductivity Behaviour of Natural Sintered Complex

Carbonate Ore for Thermo-Technological Applications

Loutfy H. Madkour

Journal of Geochemistry

Volume 2014 (2014), Article ID 451782, 10 pages

http://dx.doi.org/10.1155/2014/451782

http://www.hindawi.com/journals/jg/2014/451782/

http://www.readcube.com/articles/10.1155/2014/451782

Kinetic-thermodynamic studies of substituted mono- and bis- azo dyes as

corrosion inhibitors for iron in nitric acid and sodium hydroxide solutions

Madkour, L.H. Zinhome, U.A.

(2014)

8487035933

7

(2012)

y

Inhibition effect of Schiff base compounds on the corrosion of iron in nitric acid

and sodium hydroxide solutions

Madkour, L.H. Zinhome, U.A.

7995228917

7

(2010) y

Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and

sulfuric acid solutions

Madkour, L.H. Hassanein, A.M. Ghoneim, M.M. Eid, S.A.

5724911445

4

(2001) y

Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for

aluminium in hydrochloric acid and sodium hydroxide solutions

Madkour, L.H. Issa, R.M. El-Ghrabawy, I.M.

0032856958 (1999) y

Electrochemical Behaviour of 3-Arylazo-1,2,4-triazole Compounds in Aqueous

Buffered Solutions

Madkour, L.H.

2542539216 (1998) y

Thermodynamic behaviour of complex antimonite ore for electrodeposition of

metal value

Madkour, L.H.

0030901703 (1997) y

Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and

nitrogen containing compounds

Madkour, L.H. Ghoneim, M.M.

0004488922 (1997) y

11

Inhibition of the acid corrosion of iron with haloacetic acids

El-Gaber, A.S. Madkour, L.H. El-Asklany, A.H. Fouda, A.S. 0001955835 (1997) y

Thermo-physical studies on ilmenite ore for mass production of ceramic capacitors

Madkour, L.H. Abou-Sekkina, M.M. Hemeda, O.M. 3342880695 (1996) y

Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum

Madkour, L.H.

0343885772

(1996)

y

Electrolytic recovery of antimony from natural stibnite ore

Madkour, L.H. Salem, I.A. 0030283970 (1996) y

Inhibition of copper corrosion by arylazotriazoles in nitric acid solution

Madkour, L.H. Elmorsi, M.A. Ghoneim, M.M.

2184450360

8

(1995

y

Electrolytic separation of lead and its dioxide from carbonate ore residiuum

Madkour, L.H. 0029429109 (1995) y

INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF

ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE

SOLUTIONS

By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al.

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK Volume:

26 Issue: 6 Pages: 342-346 Published: JUN (1995)

CORROSION-INHIBITORS FOR ZINC IN 2M HCL SOLUTION

By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al.

BULLETIN OF THE KOREAN CHEMICAL SOCIETY Volume: 16 Issue:

5 Pages: 454-458 Published: MAY 20 (1995)

SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE

COMPLEXES OF OXOCATIONS OF MOLYBDENUM (VI, V) AND

URANIUM(VI)

By: KANDIL, SS; MADKOUR, LH

SPECTROSCOPY LETTERS Volume: 26 Issue: 3 Pages: 535-550 Published:

(1993)

HYDRO- AND ELECTROMETALLURGY TREATMENT OF CASSITERITES

(greater than S%NO//2 CONCENTRATE).

(1995)

(1995)

(1993)

0024011748

y

12

Madkour, L.H.

(1988)

THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN

HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES

By: FOUDA, AEE; ELASKLANY, AE; MADKOUR, LH; et al.

ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY Volume:

124 Issue: 3 Pages: 377-385 Published: MAY-JUN (1987)

ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-

PHENYLPYRAZOLIDIN-3,5-DIONES IN 20-PERCENT ETHANOLIC BR

BUFFERS AT MERCURY-ELECTRODE

By: ISSA, RM; GHONEIM, MM; ELMORSI, M; MADKOUR, LH

JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 134 Issue:

3 Pages: C140-C140 Published: MAR (1987)

CRITICAL MICELLE CONCENTRATIONS OF

HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE

TEMPERATURE-RANGE 25 TO 160-DEGREES-C

By: FOUDA, AA; MADKOUR, LH; EVANS, DF

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-

INORGANIC PHYSICAL THEORETICAL & ANALYTICAL

CHEMISTRY Volume: 25 Issue: 12 Pages: 1102-1104 Published: DEC

(1986)

INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS

CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION

By: FOUDA, AS; MADKOUR, LH

BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 5 Pages: 745-

749 Published: SEP-OCT (1986)

ELECTRODEPOSITION OF TIN FROM TINSTONE ORE

By: FOUDA, AS; MADKOUR, LH; KHALIFA, ME

BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 4 Pages: 504-

506 Published: JUL-AUG (1986)

CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS

CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS

By: FOUDA, AS; MADKOUR, LH; SOLIMAN, MS

(1987)

(1986)

(1986)

(1986)

(1987)

13

BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 3 Pages: 358-

360 Published: MAY-JUN (1986)

THERMODYNAMIC STUDIES ON SULPHATE ROASTING FOR ZINC

ELECTROWINNING FROM CARBONATE ORE.

Madkour, Loutfy H.

(1986)

0022721274

(1986)

y

HYDROMETALLURGICAL AND ELECTROMETALLURGICAL

TREATMENT OF CASSITERITE CONCENTRATE.

Madkour, Loutfy H.

0022704469 (1986) y

Electrodeposition of titanium and its dioxide from ilmenite

Madkour, L.H. Fouda, A.S.

0022662445

(1986)

y

RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC

EXTRACTION OF LEAD AND ZINC FROM RED SEA POLYMETAL ORE.

Madkour, Loutfy H.

0022050490 (1985) y

POLAROGRAPHIC REDUCTION OF SOME ARYLIDENE DERIVATIVES

OF OXALIC HYDRAZIDE IN BUFFER SOLUTIONS OF VARYING pH.

Issa, R.M. Ghoneim, M.M. El-Baradie, H.Y.F. Madkour, L.H.

0021820751 (1985) y

ELECTROCHEMICAL REDUCTION OF SOME ARYLIDENE DERIVATIVES

OF SALICYLIC, OXALIC, SUCCINIC AND METHYL ( 2-HYDROXY

PHENIDENE )- BENZOIC HYDRAZIDES IN NONAQUEOUS MEDIUM AT A

MERCURY CATHODE.

Ghoneim, M.M. Issa, R.M. Madkour, L.H.

0021793615 (1985) y

THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN

HYDROCHLORIC-ACID SOLUTION

By: FOUDA, AS; ELASKLANY, AH; MADKOUR, LH (1984) JOURNAL OF THE INDIAN CHEMICAL SOCIETY Volume: 61 Issue: 5 Pages: 425-429 Published: (1984)

14

You searched for: AUTHOR: (Madkour LH) ...More

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1.

Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and sulfuric acid solutions By: Madkour, LH; Hassanein, AM; Ghoneim, MM; et al. MONATSHEFTE FUR CHEMIE Volume: 132 Issue: 2 Pages: 245-258 Published: FEB 2001

Full Text from Publisher

View Abstract

Times Cited: 3 (from All Databases)

2.

Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for aluminium in hydrochloric acid and sodium hydroxide solutions By: Madkour, LH; Issa, RM; El-Ghrabawy, IM JOURNAL OF CHEMICAL RESEARCH-S Issue: 7 Pages: 408-409A Published: JUL 1999

Full Text from Publisher

View Abstract

Times Cited: 10 (from All Databases)

3.

Electrochemical behaviour of 3-Arylazo-1,2,4-triazole compounds in aqueous buffered solutions By: Madkour, LH JOURNAL OF CHEMICAL RESEARCH-S Issue: 9 Pages: 514-515 Published: SEP 1998

Full Text from Publisher

View Abstract

Times Cited: 2 (from All Databases)

4.

Thermodynamic behaviour of complex antimonite ore for electrodeposition of metal value By: Madkour, LH JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE Volume: 94 Issue: 3 Pages: 620-634 Published: MAR 1997

View Abstract

Times Cited: 3 (from All Databases)

15

5.

Inhibition of the acid corrosion of iron with haloacetic acids By: ElGaber, AS; Madkour, LH; ElAsklany, AH; et al. BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 2 Pages: 62-66 Published: FEB 1997

View Abstract

Times Cited: 2 (from All Databases)

6.

Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and nitrogen containing compounds By: Madkour, LH; Ghoneim, MM BULLETIN OF ELECTROCHEMISTRY Volume: 13 Issue: 1 Pages: 1-7 Published: JAN 1997

View Abstract

Times Cited: 10 (from All Databases)

7.

Electrolytic recovery of antimony from natural stibnite ore By: Madkour, LH; Salem, IA HYDROMETALLURGY Volume: 43 Issue: 1-3 Pages: 265-275 Published: NOV 1996

Full Text from Publisher

View Abstract

Times Cited: 9 (from All Databases)

8.

Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum By: Madkour, LH Conference: 5th International Symposium on Advances in Electrochemical Science and Technology Location: MADRAS, INDIA Date: NOV 24-26, 1994 BULLETIN OF ELECTROCHEMISTRY Volume: 12 Issue: 3-4 Pages: 234-236 Published: MAR-APR 1996

View Abstract

Times Cited: 1 (from All Databases)

9.

ELECTROLYTIC SEPARATION OF LEAD AND ITS DIOXIDE FROM CARBONATE ORE RESIDIUUM By: MADKOUR, LH INDIAN JOURNAL OF CHEMICAL TECHNOLOGY Volume: 2 Issue: 6 Pages: 343-344 Published: NOV 1995

View Abstract

Times Cited: 2 (from All Databases)

10.

INHIBITION OF COPPER CORROSION BY ARYLAZOTRIAZOLES IN NITRIC-ACID SOLUTION By: MADKOUR, LH; ELMORSI, MA; GHONEIM, MM

16

MONATSHEFTE FUR CHEMIE Volume: 126 Issue: 10 Pages: 1087-1095 Published: OCT 1995 11.

INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE SOLUTIONS By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al. MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK Volume: 26 Issue: 6 Pages: 342-346 Published: JUN 1995

Full Text from Publisher

View Abstract

Times Cited: 6 (from All Databases)

12.

CORROSION-INHIBITORS FOR ZINC IN 2M HCL SOLUTION By: FOUDA, AS; MADKOUR, LH; ELSHAFEI, AA; et al. BULLETIN OF THE KOREAN CHEMICAL SOCIETY Volume: 16 Issue: 5 Pages: 454-458 Published: MAY 20 1995 12

View Abstract

Times Cited: 16 (from All Databases)

13.

SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE COMPLEXES OF OXOCATIONS OF MOLYBDENUM (VI, V) AND URANIUM(VI) By: KANDIL, SS; MADKOUR, LH SPECTROSCOPY LETTERS Volume: 26 Issue: 3 Pages: 535-550 Published: 1993

Full Text from Publisher

View Abstract

Times Cited: 4 (from All Databases)

14.

THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES By: FOUDA, AEE; ELASKLANY, AE; MADKOUR, LH; et al. ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY Volume: 124 Issue: 3 Pages: 377-385 Published: MAY-JUN 1987 Times Cited: 2 (from All Databases)

15.

ELECTRODEPOSITION OF INDIUM By: FOUDA, AS; MADKOUR, LH; AHMED, AI BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 2 Pages: 270-272 Published: MAR-APR 1987 Times Cited: 1 (from All Databases)

17

16.

ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-PHENYLPYRAZOLIDIN-3,5-DIONES IN 20-PERCENT ETHANOLIC BR BUFFERS AT MERCURY-ELECTRODE By: ISSA, RM; GHONEIM, MM; ELMORSI, M; et al. JOURNAL OF THE ELECTROCHEMICAL SOCIETY Volume: 134 Issue: 3 Pages: C140-C140 Published: MAR 1987 Times Cited: 0 (from All Databases)

17.

CRITICAL MICELLE CONCENTRATIONS OF HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE TEMPERATURE-RANGE 25 TO 160-DEGREES-C By: FOUDA, AA; MADKOUR, LH; EVANS, DF INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY Volume: 25 Issue: 12 Pages: 1102-1104 Published: DEC 1986 Times Cited: 5 (from All Databases)

18.

INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION By: FOUDA, AS; MADKOUR, LH BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 5 Pages: 745-749 Published: SEP-OCT 1986 Times Cited: 2 (from All Databases)

19.

ELECTRODEPOSITION OF TIN FROM TINSTONE ORE By: FOUDA, AS; MADKOUR, LH; KHALIFA, ME BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 4 Pages: 504-506 Published: JUL-AUG 1986 Times Cited: 0 (from All Databases)

20.

CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS By: FOUDA, AS; MADKOUR, LH; SOLIMAN, MS BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE Issue: 3 Pages: 358-360 Published: MAY-JUN 1986 21.

THERMODYNAMIC STUDIES ON SULFATE ROASTING FOR ZINC ELECTROWINNING FROM CARBONATE ORE By: MADKOUR, LH JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY Volume: 36 Issue: 5 Pages: 197-211 Published: MAY 1986

Full Text from Publisher

18

Times Cited: 0 (from All Databases)

22.

ELECTRODEPOSITION OF TITANIUM AND ITS DIOXIDE FROM ILMENITE By: MADKOUR, LH; FOUDA, AS JOURNAL OF ELECTROANALYTICAL CHEMISTRY Volume: 199 Issue: 1 Pages: 207-210 Published: FEB 25 1986

Full Text from Publisher

Times Cited: 3 (from All Databases)

23.

RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC EXTRACTION OF LEAD AND ZINC FROM RED-SEA POLYMETAL ORE By: MADKOUR, LH JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY A-CHEMICAL TECHNOLOGY Volume: 35 Issue: 3 Pages: 108-114 Published: 1985

Full Text from Publisher

Times Cited: 5 (from All Databases)

24.

THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN HYDROCHLORIC-ACID SOLUTION By: FOUDA, AS; ELASKLANY, AH; MADKOUR, LH JOURNAL OF THE INDIAN CHEMICAL SOCIETY Volume: 61 Issue: 5 Pages: 425-429 Published: 1984 Times Cited: 5 (from All Databases

Inhibition effect of hydantoin compounds on the corrosion of iron in nitric and sulfuric acid solutions

By:Madkour, LH (Madkour, LH); Hassanein, AM (Hassanein, AM); Ghoneim, MM (Ghoneim, MM); Eid, SA (Eid, SA)

MONATSHEFTE FUR CHEMIE

Volume: 132

Issue: 2

Pages: 245-258

DOI: 10.1007/s007060170134

Published: FEB 2001

View Journal Information

19

JCR® Category Quartile in Category

CHEMISTRY, MULTIDISCIPLINARY Q3

Abstract

The inhibition of corrosion of iron in 2M nitric acid and 2M sulfuric acid solutions by substituted phenylhydantoin,

thiohydantoin, and dithiohydantoin compounds was measured using thermometric, weight loss, and polarization methods.

The three methods gave consistent results. The polarization curves indicated that the hydantoin compounds act as mixed-

type inhibitors. The adsorption of the inhibitors were found to obey the Temkin adsorption isotherm. The higher inhibition

efficiency of the additives in nitric with respect to sulfuric acid solution may be attributed to the reduced formation of

soluble quaternary nitrogen salts in nitric acid medium, favouring adsorption of the parent additive on the metal surface.

The obtained results indicate that the corrosion rate of iron in both acids increases with increasing temperature, both in

absence and presence of the tested inhibitors. Kinetic-thermodynamic model functions and Temkin isotherm data an

compared and discussed. The synergistic effect of halide anions on the inhibition efficiency of the hydantoin compounds

was also investigated.

Keywords

Author Keywords:acid corrosion; inhibition; iron; hydantoins; synergistic effect

KeyWords Plus:HALIDE-IONS; DISSOLUTION; STEEL

Author Information

Reprint Address: Ghoneim, MM (reprint author)

Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt.

Addresses:

[ 1 ] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt

Publisher

SPRINGER-VERLAG WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA

Categories / Classification

Research Areas:Chemistry

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

Language:English

Accession Number: WOS:000167593400005

ISSN: 0026-9247

Journal Information

Table of Contents: Current Contents Connect®

20

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: 413CY

Cited References in Web of Science Core Collection: 31

Times Cited in Web of Science Core Collection: 3

Kinetics of substituted bis- and mono-azo dyes as corrosion inhibitors for aluminium in hydrochloric acid and sodium hydroxide solutions

By:Madkour, LH (Madkour, LH); Issa, RM (Issa, RM); El-Ghrabawy, IM (El-Ghrabawy, IM)

JOURNAL OF CHEMICAL RESEARCH-S

Issue: 7

Pages: 408-409A

DOI: 10.1039/a805608k

Published: JUL 1999

Abstract

This investigation is designed to apply an advanced kinetic-thermodynamic model on the data obtained from acidic and

alkaline corrosion of aluminium using bis- and mono-ate dyes as corrosion inhibitors.

Keywords

KeyWords Plus:NITROGEN-CONTAINING COMPOUNDS; ELECTROCHEMICAL-BEHAVIOR; CHLORIDE SOLUTION;

ALLOYS; ADSORPTION; STEEL; DERIVATIVES; DISSOLUTION; EFFICIENCY; COPPER

Author Information

Reprint Address: Madkour, LH (reprint author)

Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt.

Addresses:

[ 1 ] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt

Publisher

SCIENCE REVIEWS LTD, 40 THE FAIRWAY, NORTHWOOD HA6 3DY, MIDDX, ENGLAND

Categories / Classification

Research Areas:Chemistry

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

21

Language:English

Accession Number: WOS:000082122500002

ISSN: 0308-2342

Journal Information

Table of Contents: Current Contents Connect®

Other Information

IDS Number: 228DU

Cited References in Web of Science Core Collection: 45

Times Cited in Web of Science Core Collection: 10

Electrochemical behaviour of 3-Arylazo-1,2,4-triazole compounds in aqueous buffered solutions

By:Madkour, LH (Madkour, LH)

JOURNAL OF CHEMICAL RESEARCH-S

Issue: 9

Pages: 514-515

DOI: 10.1039/a800519b

Published: SEP 1998

Abstract

A variety of electroanalytical methods, e.g. DC polarography, cyclic voltammetry and controlled potential coulometry have

been employed upon 3-arylazo-1,2,4-triazole derivatives, AAT; substituents affect the reduction potentials but do not alter

the reduction pattern.

Author Information

Reprint Address: Madkour, LH (reprint author)

Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt.

Addresses:

[ 1 ] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Egypt

Publisher

ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD,, CAMBRIDGE CB4 0WF,

CAMBS, ENGLAND

Categories / Classification

Research Areas:Chemistry

22

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

Language:English

Accession Number: WOS:000077722900016

ISSN: 0308-2342

Journal Information

Table of Contents: Current Contents Connect®

Other Information

IDS Number: 151MB

Cited References in Web of Science Core Collection: 32

Times Cited in Web of Science Core Collection: 2

Thermodynamic behaviour of complex antimonite ore for electrodeposition of metal value

By:Madkour, LH (Madkour, LH)

JOURNAL DE CHIMIE PHYSIQUE ET DE PHYSICO-CHIMIE BIOLOGIQUE

Volume: 94

Issue: 3

Pages: 620-634

Published: MAR 1997

Abstract

This paper outlines the hydrometallurgical processing and the various possible approaches for the recovery of metallic

antimony from its antimonite sulphide ore by electrolysis. Thermodynamic calculations have been made to find the

optimum conditions for roasting and/or sulphate roasting of Wadi Abu Quraiya antimonite ore. The antimonite ore (Sb2S3)

is roasted directly without concentration and large savings in reagent and chemical processes are expected. A suitable

roasting temperature of 1200 K for 4 hours has been determined. Metallic antimony is' cathodically electrodeposited with a

high current efficiency at current densities of 350 to 500 A/m(2) depending on the composition of leach liquor solutions.

The results of the electron microscopy investigation confirmed by metal value data in the ASTM cards are in good

agreement with the chemical analysis.

Keywords

Author Keywords:antimony sulphide ore; roasting; hydrometallurgical treatment; antimony deposition

Author Information

23

Reprint Address: Madkour, LH (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.

Publisher

EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS, FRANCE

Categories / Classification

Research Areas:Biochemistry & Molecular Biology; Chemistry

Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Physical

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1997WW09200012

ISSN: 0021-7689

Other Information

IDS Number: WW092

Cited References in Web of Science Core Collection: 27

Times Cited in Web of Science Core Collection: 3

Inhibition of the acid corrosion of iron with haloacetic acids

By:ElGaber, AS (ElGaber, AS); Madkour, LH (Madkour, LH); ElAsklany, AH (ElAsklany, AH); Fouda, AS (Fouda, AS)

BULLETIN OF ELECTROCHEMISTRY

Volume: 13

Issue: 2

Pages: 62-66

Published: FEB 1997

Abstract

The efficiency of chloro, dichloro, trichloro, bromo, and iodoacetic acids as inhibitors for acid corrosion of in-on was

studied using polarization technique. A significant retardation of the corrosion rate Is observed in the inhibited HNO3

solution. The rate of corrosion depends on the nature of the inhibitor and its concentration and on the temperature of the

system. It was found that iodoacetic acid has a significant inhibiting effect on the corrosion of the metal and protection

efficiencies approaching 91% were measured. The inhibitor shifts the free corrosion potential in the cathodic direction and

polarizes both the cathodic and anodic half reactions. It was found that the compounds under consideration are

24

chemisorbed on the iron sun-face according to the Frumkin isotherm. The Tafel slope is approximately constant and

independent of the concentration of the inhibitor, The thermodynamic parameters of adsorption obtained reveal a strong

interaction of these inhibitors on the iron surface.

Keywords

Author Keywords:corrosion; inhibition and haloacetic acids

Author Information

Addresses:

[ 1 ] QUAID I AZAM UNIV,FAC SCI,DEPT CHEM,DOHA,QATAR

[ 2 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

[ 3 ] EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT

Publisher

CENTRAL ELECTROCHEM RES INST, ATTN: DIRECTOR, KARAIKKUDI 623 006, INDIA

Categories / Classification

Research Areas:Electrochemistry

Web of Science Categories:Electrochemistry

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1997WN20900003

ISSN: 0256-1654

Other Information

IDS Number: WN209

Cited References in Web of Science Core Collection: 20

Times Cited in Web of Science Core Collection: 2

Inhibition of the corrosion of 16/14 austenitic stainless steel by oxygen and nitrogen containing compounds

By:Madkour, LH (Madkour, LH); Ghoneim, MM (Ghoneim, MM)

BULLETIN OF ELECTROCHEMISTRY

Volume: 13

Issue: 1

Pages: 1-7

Published: JAN 1997

25

Abstract

Corrosion inhibition by methoionine (MET), citrulline (CIT), alanine (AL), glycine (GLY) and hydroxyproline (HPR) with

respect to the dissolution of tungsten stainless steels in hydrochloric acid solution was studied using potentiodynamic,

Tafel extrapolation and polarization resistance methods. Polarization curves indicated that the primary passivation

potential (Epp) and the transpassive region shift towards more positive potentials in presence of the studied amino acids,

i.e. there is more passivation at wide potential range in the presence of amino acid inhibitors. The corrosion parameters

are dependent on the percentage of tungsten in the alloy composition as well as the nature of the tested amino acids. The

intermetallic compound Fe3W2 may form a galvanic cell with the matrix around the Fe3W2 phase within the matrix that is

formed as a dispersed phase.

Keywords

Author Keywords:amino acids; inhibition; tungsten stainless steel

KeyWords Plus:HYDROCHLORIC-ACID SOLUTION; NITRIC-ACID; COPPER

Author Information

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

Publisher

CENTRAL ELECTROCHEM RES INST, ATTN: DIRECTOR, KARAIKKUDI 623 006, INDIA

Categories / Classification

Research Areas:Electrochemistry

Web of Science Categories:Electrochemistry

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1997WN20600001

ISSN: 0256-1654

Other Information

IDS Number: WN206

Cited References in Web of Science Core Collection: 16

Times Cited in Web of Science Core Collection: 10

Electrolytic recovery of antimony from natural stibnite ore

By:Madkour, LH (Madkour, LH); Salem, IA (Salem, IA)

HYDROMETALLURGY

26

Volume: 43

Issue: 1-3

Pages: 265-275

DOI: 10.1016/0304-386X(95)00113-U

Published: NOV 1996

View Journal Information

JCR® Category Quartile in Category

METALLURGY & METALLURGICAL ENGINEERING Q1

Abstract

Stibnite ore at Wadi Abu Quraiya, situated in the central Eastern Desert of Egypt has been subjected to petrographical,

mineralogical, infrared, X-ray diffraction, chemical and spectral analyses. Hydrometallurgical treatment based on leaching

with acids, precipitation and electrodeposition of metal values from the ore have been developed. Studies to investigate

suitable electrolytic baths for the cathodic deposition of metallic antimony either directly from the leach liquor or in the

presence of complexing agents have been carried out, The influence of various factors on the electrodeposition process

of the element from its electrolyte solutions is discussed, Advantages of the flowsheet and various approaches depending

on convenient electrolytes for the deposition of antimony from the stibnite ore have been investigated. The results of

spectrophotometric and chemical analyses revealed that the purity of the metal is > 99%.

Keywords

Author Keywords:stibnite; leaching; antimony extraction

Author Information

Reprint Address: Madkour, LH (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT GEOL,TANTA,EGYPT

Publisher

ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

Categories / Classification

Research Areas:Metallurgy & Metallurgical Engineering

Web of Science Categories:Metallurgy & Metallurgical Engineering

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1996VM89200020

ISSN: 0304-386X

27

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: VM892

Cited References in Web of Science Core Collection: 25

Times Cited in Web of Science Core Collection: 9

Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum

By:Madkour, LH (Madkour, LH)

BULLETIN OF ELECTROCHEMISTRY

Volume: 12

Issue: 3-4

Pages: 234-236

Published: MAR-APR 1996

Conference

Conference: 5th International Symposium on Advances in Electrochemical Science and Technology

Location: MADRAS, INDIA

Date: NOV 24-26, 1994

Abstract

Acid-leach residue resulting from the sulphate roasting of Zn-Pb Egyptial carbonate ore is used for the production of lead,

after hydrometallurgical treatments. Studies to investigate various baths for the deposition of lead and lead dioxide have

been carried out. The results showed a wide variety of electrolysis, either soluble simple salts, or those containing

complex anions and in virtually all cases, very high current efficiencies are obtained. The effects of various factors on the

electrodeposition of Pb and PbO2 are discussed. Tn commercial practice, the properties and service requirements dictate

the precise electrolyte that should be used since the properties of electrodeposited lead vary with the baths, Mechanism

of the electrolytic production of the element and its dioxide is discussed. The results spectrophotometric and chemical

analyses revealed that the purity of the metal is > 99%.

Keywords

Author Keywords:carbonate ore residuum; hydrometallurgical treatments; lead extraction

Author Information

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

28

Publisher

CENTRAL ELECTROCHEM RES INST, ATTN: DIRECTOR, KARAIKKUDI 623 006, INDIA

Categories / Classification

Research Areas:Electrochemistry

Web of Science Categories:Electrochemistry

Document Information

Document Type:Article; Proceedings Paper

Language:English

Accession Number: WOS:A1996UT92200026

ISSN: 0256-1654

Other Information

IDS Number: UT922

Cited References in Web of Science Core Collection: 19

Times Cited in Web of Science Core Collection: 0

ELECTROLYTIC SEPARATION OF LEAD AND ITS DIOXIDE FROM CARBONATE ORE RESIDIUUM

By:MADKOUR, LH (MADKOUR, LH)

INDIAN JOURNAL OF CHEMICAL TECHNOLOGY

Volume: 2

Issue: 6

Pages: 343-344

Published: NOV 1995

View Journal Information

JCR® Category Quartile in Category

CHEMISTRY, APPLIED Q4

ENGINEERING, CHEMICAL Q4

Abstract

Electrowinning work is carried out on the roasted Eastern Desert complex carbonate ore residuum. Lead and its dioxide

are electrodeposited from various electrolyte ore baths and the results showed a wide variety of ore electrolyte solutions,

either in the form of soluble simple ore salts, or those containing complex ore anions. The optimum conditions and the

efficiency of the electrolytic extraction are determined experimentally on the ore leach solutions.

Author Information

29

Reprint Address: MADKOUR, LH (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.

Publisher

COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH, PUBL & INFO DIRECTORATE, NEW DELHI 110012, INDIA

Categories / Classification

Research Areas:Chemistry; Engineering

Web of Science Categories:Chemistry, Applied; Engineering, Chemical

Document Information

Document Type:Note

Language:English

Accession Number: WOS:A1995RY88900012

ISSN: 0971-457X

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: RY889

Cited References in Web of Science Core Collection: 0

Times Cited in Web of Science Core Collection: 2

INHIBITION OF COPPER CORROSION BY ARYLAZOTRIAZOLES IN NITRIC-ACID SOLUTION

By:MADKOUR, LH (MADKOUR, LH); ELMORSI, MA (ELMORSI, MA); GHONEIM, MM (GHONEIM, MM)

MONATSHEFTE FUR CHEMIE

Volume: 126

Issue: 10

Pages: 1087-1095

DOI: 10.1007/BF00811379

Published: OCT 1995

View Journal Information

JCR® Category Quartile in Category

CHEMISTRY, MULTIDISCIPLINARY Q3

Abstract

30

A study has been made to investigate the effect of some azoheterocyclic dyes of the type 3-arylazo 1,2,4-triazole (AT) on

the corrosion of copper exposed to 0.5 M nitric acid solution at different temperatures and at different AT concentrations.

Using potentiodynamic polarization and Tafel electrochemical methods, it can be shown that AT compounds are good

inhibitors of copper corrosion in HNO3 solution. The kinetic and thermodynamic parameters of the inhibited system were

determined. The high inhibition efficiency of these compounds may be due to the adsorption of the additive itself and/or

the adsorption of the formed Cu(II)-AT complexes at the polarized electrode interface. Cathodic polarization

measurements showed that AT dyes are predominantly cationic inhibitors.

Keywords

Author Keywords:ACID MEDIUM; ARYLAZOTRIAZOLES; INHIBITION; COPPER

KeyWords Plus:BENZOTRIAZOLE; ALLOYS; CU

Author Information

Reprint Address: MADKOUR, LH (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.

Publisher

SPRINGER-VERLAG WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA

Categories / Classification

Research Areas:Chemistry

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1995RZ65400005

ISSN: 0026-9247

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: RZ654

Cited References in Web of Science Core Collection: 14

Times Cited in Web of Science Core Collection: 13

INHIBITORY EFFECT OF SOME CARBAZIDES ON CORROSION OF ALUMINUM IN HYDROCHLORIC-ACID AND SODIUM-HYDROXIDE SOLUTIONS

31

By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); ELSHAFEI, AA (ELSHAFEI, AA); ELASKLANY, AH

(ELASKLANY, AH)

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK

Volume: 26

Issue: 6

Pages: 342-346

DOI: 10.1002/mawe.19950260612

Published: JUN 1995

View Journal Information

JCR® Category Quartile in Category

MATERIALS SCIENCE, MULTIDISCIPLINARY Q4

Abstract

The dissolution of aluminium in hydrochloric acid and sodium hydroxide solutions in the presence of semicarbazide,

thiosemicarbazide and sym.diphenylcarbazide as corrosion inhibitors has been studied using thermometric, weight-loss

and polarization methods. The three methods gave consistent results. The higher inhibition efficiency of these compounds

in acidic than in alkaline madia may be due to the less negative potential of aluminium in hydrochloric acid solution,

favouring adsorption of the additive. The adsorption of these compounds were found to obey Frumkin adsorption

isotherm.

Cathodic polarization measurements showed that these compounds are cathodic inhibitors and their adsorption in the

double layer does not change the mechanism of the hydrogen evolution reaction. The results are analysed in terms of

both molecular and cationic adsorption.

Keywords

KeyWords Plus:DERIVATIVES; DISSOLUTION

Author Information

Reprint Address: FOUDA, AS (reprint author)

EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

Publisher

VCH PUBLISHERS INC, 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788

Categories / Classification

Research Areas:Materials Science

Web of Science Categories:Materials Science, Multidisciplinary

32

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1995RF41700009

ISSN: 0933-5137

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: RF417

Cited References in Web of Science Core Collection: 12

Times Cited in Web of Science Core Collection: 6

CORROSION-INHIBITORS FOR ZINC IN 2M HCL SOLUTION

By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); ELSHAFEI, AA (ELSHAFEI, AA); ELMAKSOUD, SAA

(ELMAKSOUD, SAA)

BULLETIN OF THE KOREAN CHEMICAL SOCIETY

Volume: 16

Issue: 5

Pages: 454-458

Published: MAY 20 1995

Abstract

Inhibiting action of semicarbazide, thiosemicarbazide, sym. diphenylcarbazide towards corrosion of zinc in hydrochloric

acid has been investigated. The rate of corrosion depends on the nature of the inhibitor and its concentration. The values

of inhibition efficiency from, weight loss, thermometric measurements are in good agreement with those obtained from

polarization studies. From the polarization studies, the inhibitors used act as mixed adsorption type inhibitors, increased

adsorption resulting from an increase in the electron density at the reactive C=S and C=O groups and N-atoms. The

thermodynamic parameters of adsorption obtained using Bockris-Swinkels adsorption isotherm reveal a strong interaction

of these carbazides on zinc surface.

Author Information

Reprint Address: FOUDA, AS (reprint author)

EL MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Addresses:

[ 1 ] TANTA UNIV,TANTA,EGYPT

33

[ 2 ] SUEZ QANAL UNIV,FAC EDUC,AL ARISH,EGYPT

Publisher

KOREAN CHEMICAL SOC, 635-4 YEOGSAM-DONG, KANGNAM-GU, SEOUL 135-703, SOUTH KOREA

Categories / Classification

Research Areas:Chemistry

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1995RB62400018

ISSN: 0253-2964

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: RB624

Cited References in Web of Science Core Collection: 25

Times Cited in Web of Science Core Collection: 16

SYNTHESIS AND CHARACTERIZATION OF 2,2'-BIIMIDAZOLE COMPLEXES OF OXOCATIONS OF MOLYBDENUM (VI, V) AND URANIUM(VI)

By:KANDIL, SS (KANDIL, SS); MADKOUR, LH (MADKOUR, LH)

SPECTROSCOPY LETTERS

Volume: 26

Issue: 3

Pages: 535-550

DOI: 10.1080/00387019308011552

Published: 1993

View Journal Information

JCR® Category Quartile in Category

SPECTROSCOPY Q4

Abstract

2,2'-Biimidazole complexes of MoO2(+2), MoO2+ and UO2(+2) have been prepared and characterized by elemental

analysis, conductance; and H-1 NMR, IR and electronic spectra. Two types of complexes have been identified. Those

34

obtained from slightly acidic solutions have the formulae MoO2(H2bim)Cl2.2H2O 1, UO2(H2bim)(Ac)2 2 and

UO2(H2bim)Cl2.2H2O 3; whereas those from alkaline solutions have the formulae Mo2O4(Hbim)2.2H2O 4, and

MO2(Hbim)2 (M = Mo(VI) 5, U(VI) 6). The infrared spectra of these complexes show characteristic biimidazole

frequencies in the 3200-2500, 1550-1000 and 750 cm-1 regions as well as metal oxygen double bonds in the 900 cm-1

region. The stoichiometries of the acetate complex has been confirmed from H-1 NMR signal ratios of biimidazole to

acetate protons at 7.3 and 2.3 ppm, respectively. The electronic spectrum of molybdenum(V) complex showed d-d

transition band at congruent-to 13,500 cm-1 in accord with that reported for copper (d9) imidazole complexes; as well as

peaks due to charge transfer bands at 30,000-26,000 cm-1. Peaks assignable to BIM --> U(VI) were located at congruent-

to 26,600 cm-1. The most probable structures of these complexes have been suggested.

Keywords

KeyWords Plus:RHODIUM(I) COMPLEXES; MOLECULAR-STRUCTURES; CRYSTAL-STRUCTURE; LIGANDS;

RESONANCE; ANIONS

Author Information

Reprint Address: KANDIL, SS (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.

Publisher

MARCEL DEKKER INC, 270 MADISON AVE, NEW YORK, NY 10016

Categories / Classification

Research Areas:Spectroscopy

Web of Science Categories:Spectroscopy

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1993KR90200012

ISSN: 0038-7010

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: KR902

Cited References in Web of Science Core Collection: 24

Times Cited in Web of Science Core Collection: 4

35

THE INHIBITION OF THE DISSOLUTION OF ALUMINUM IN HYDROCHLORIC-ACID BY SOME BIACETYLMONOXIME HYDRAZONES

By:FOUDA, AEE (FOUDA, AEE); ELASKLANY, AE (ELASKLANY, AE); MADKOUR, LH (MADKOUR, LH); IBRAHIM, KM

(IBRAHIM, KM)

ACTA CHIMICA HUNGARICA-MODELS IN CHEMISTRY

Volume: 124

Issue: 3

Pages: 377-385

Published: MAY-JUN 1987

Author Information

Reprint Address: FOUDA, AEE (reprint author)

MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Publisher

AKADEMIAI KIADO, PO BOX 245, H-1519 BUDAPEST, HUNGARY

Categories / Classification

Research Areas:Chemistry

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1987K445300007

ISSN: 0231-3146

Other Information

IDS Number: K4453

Cited References in Web of Science Core Collection: 8

Times Cited in Web of Science Core Collection: 2

ELECTRODEPOSITION OF INDIUM

By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); AHMED, AI (AHMED, AI)

BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE

Issue: 2

Pages: 270-272

Published: MAR-APR 1987

Author Information

36

Reprint Address: FOUDA, AS (reprint author)

MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

Publisher

EDITIONS SCIENTIFIQUES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE

Categories / Classification

Research Areas:Biochemistry & Molecular Biology; Chemistry

Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1987H297500009

ISSN: 0037-8968

Other Information

IDS Number: H2975

Cited References in Web of Science Core Collection: 16

Times Cited in Web of Science Core Collection: 1

ELECTROREDUCTION OF 4-ARYLHYDRAZONO-1-PHENYLPYRAZOLIDIN-3,5-DIONES IN 20-PERCENT ETHANOLIC BR BUFFERS AT MERCURY-ELECTRODE

By:ISSA, RM (ISSA, RM); GHONEIM, MM (GHONEIM, MM); ELMORSI, M (ELMORSI, M); MADKOUR, LH (MADKOUR,

LH); HAMMAM, E (HAMMAM, E)

JOURNAL OF THE ELECTROCHEMICAL SOCIETY

Volume: 134

Issue: 3

Pages: C140-C140

Published: MAR 1987

View Journal Information

JCR® Category Quartile in Category

ELECTROCHEMISTRY Q2

MATERIALS SCIENCE, COATINGS & FILMS Q1

37

Author Information

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

Publisher

ELECTROCHEMICAL SOC INC, 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534

Categories / Classification

Research Areas:Electrochemistry; Materials Science

Web of Science Categories:Electrochemistry; Materials Science, Coatings & Films

Document Information

Document Type:Meeting Abstract

Language:English

Accession Number: WOS:A1987G410200520

ISSN: 0013-4651

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: G4102

Cited References in Web of Science Core Collection: 0

Times Cited in Web of Science Core Collection: 0

CRITICAL MICELLE CONCENTRATIONS OF HEXADECYLTRIMETHYLAMONIUM CHLORIDE IN WATER OVER THE TEMPERATURE-RANGE 25 TO 160-DEGREES-C

By:FOUDA, AA (FOUDA, AA); MADKOUR, LH (MADKOUR, LH); EVANS, DF (EVANS, DF)

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL &

ANALYTICAL CHEMISTRY

Volume: 25

Issue: 12

Pages: 1102-1104

Published: DEC 1986

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JCR® Category Quartile in Category

38

CHEMISTRY, MULTIDISCIPLINARY Q4

Author Information

Reprint Address: FOUDA, AA (reprint author)

MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Addresses:

[ 1 ] UNIV MINNESOTA,DEPT CHEM ENGN & MAT SCI,MINNEAPOLIS,MN 55455

Publisher

COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH, PUBL & INFO DIRECTORATE, NEW DELHI 110012, INDIA

Categories / Classification

Research Areas:Chemistry

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1986G105000007

ISSN: 0376-4710

Journal Information

Impact Factor: Journal Citation Reports®

Other Information

IDS Number: G1050

Cited References in Web of Science Core Collection: 6

Times Cited in Web of Science Core Collection: 5

INHIBITIVE ACTION OF SOME AMINES AND HYDRAZINES TOWARDS CORROSION OF ZINC IN TRICHLOROACETIC-ACID SOLUTION

By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH)

BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE

Issue: 5

Pages: 745-749

Published: SEP-OCT 1986

Author Information

Addresses:

39

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

[ 2 ] MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT

Publisher

EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE

Categories / Classification

Research Areas:Biochemistry & Molecular Biology; Chemistry

Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1986E949300015

ISSN: 0037-8968

Other Information

IDS Number: E9493

Cited References in Web of Science Core Collection: 20

Times Cited in Web of Science Core Collection: 2

ELECTRODEPOSITION OF TIN FROM TINSTONE ORE

By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); KHALIFA, ME (KHALIFA, ME)

BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE

Issue: 4

Pages: 504-506

Published: JUL-AUG 1986

Author Information

Reprint Address: FOUDA, AS (reprint author)

MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

Publisher

EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE

Categories / Classification

Research Areas:Biochemistry & Molecular Biology; Chemistry

Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic

40

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1986D456600003

ISSN: 0037-8968

Other Information

IDS Number: D4566

Cited References in Web of Science Core Collection: 16

Times Cited in Web of Science Core Collection: 0

CORRELATION BETWEEN EFFECTIVENESS OF ALIPHATIC-AMINES AS CORROSION-INHIBITORS AND ELECTRON-DENSITY CALCULATIONS

By:FOUDA, AS (FOUDA, AS); MADKOUR, LH (MADKOUR, LH); SOLIMAN, MS (SOLIMAN, MS)

BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE

Issue: 3

Pages: 358-360

Published: MAY-JUN 1986

Author Information

Reprint Address: FOUDA, AS (reprint author)

MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Addresses:

[ 1 ] TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT

Publisher

EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE

Categories / Classification

Research Areas:Biochemistry & Molecular Biology; Chemistry

Web of Science Categories:Biochemistry & Molecular Biology; Chemistry, Multidisciplinary; Chemistry, Organic

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1986C902300004

ISSN: 0037-8968

Other Information

41

IDS Number: C9023

Cited References in Web of Science Core Collection: 19

Times Cited in Web of Science Core Collection: 3

THERMODYNAMIC STUDIES ON SULFATE ROASTING FOR ZINC ELECTROWINNING FROM CARBONATE ORE

By:MADKOUR, LH (MADKOUR, LH)

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY

Volume: 36

Issue: 5

Pages: 197-211

Published: MAY 1986

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JCR® Category Quartile in Category

BIOTECHNOLOGY & APPLIED MICROBIOLOGY Q2

CHEMISTRY, MULTIDISCIPLINARY Q2

ENGINEERING, CHEMICAL Q1

Author Information

Reprint Address: MADKOUR, LH (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.

Publisher

JOHN WILEY & SONS LTD, BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD

Categories / Classification

Research Areas:Biotechnology & Applied Microbiology; Chemistry; Engineering

Web of Science Categories:Biotechnology & Applied Microbiology; Chemistry, Multidisciplinary; Engineering, Chemical

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1986C307300001

ISSN: 0268-2575

Journal Information

Impact Factor: Journal Citation Reports®

42

Other Information

IDS Number: C3073

Cited References in Web of Science Core Collection: 17

Times Cited in Web of Science Core Collection: 0

ELECTRODEPOSITION OF TITANIUM AND ITS DIOXIDE FROM ILMENITE

By:MADKOUR, LH (MADKOUR, LH); FOUDA, AS (FOUDA, AS)

JOURNAL OF ELECTROANALYTICAL CHEMISTRY

Volume: 199

Issue: 1

Pages: 207-210

DOI: 10.1016/0022-0728(86)87053-X

Published: FEB 25 1986

View Journal Information

JCR® Category Quartile in Category

CHEMISTRY, ANALYTICAL Q2

ELECTROCHEMISTRY Q2

Author Information

Reprint Address: MADKOUR, LH (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT.

Addresses:

[ 1 ] MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT

Publisher

ELSEVIER SCIENCE SA LAUSANNE, PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND

Categories / Classification

Research Areas:Chemistry; Electrochemistry

Web of Science Categories:Chemistry, Analytical; Electrochemistry

Document Information

Document Type:Note

Language:English

Accession Number: WOS:A1986A246800016

ISSN: 0022-0728

Other Information

43

IDS Number: A2468

Cited References in Web of Science Core Collection: 18

Times Cited in Web of Science Core Collection: 3

RECOMMENDED FLOWSHEETS FOR THE ELECTROLYTIC EXTRACTION OF LEAD AND ZINC FROM RED-SEA POLYMETAL ORE

By:MADKOUR, LH (MADKOUR, LH)

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY A-CHEMICAL TECHNOLOGY

Volume: 35

Issue: 3

Pages: 108-114

Published: 1985

Author Information

Reprint Address: MADKOUR, LH (reprint author)

TANTA UNIV,FAC SCI,DEPT CHEM,TANTA,EGYPT, EGYPT.

Publisher

BLACKWELL SCIENCE LTD, OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL

Categories / Classification

Research Areas:Biotechnology & Applied Microbiology

Web of Science Categories:Biotechnology & Applied Microbiology

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1985AFR1000002

ISSN: 0264-3413

Other Information

IDS Number: AFR10

Cited References in Web of Science Core Collection: 18

Times Cited in Web of Science Core Collection: 5

THE EFFECT OF SOME BETA-DIKETO COMPOUNDS ON THE CORROSION OF ZINC IN HYDROCHLORIC-ACID SOLUTION

By:FOUDA, AS (FOUDA, AS); ELASKLANY, AH (ELASKLANY, AH); MADKOUR, LH (MADKOUR, LH)

JOURNAL OF THE INDIAN CHEMICAL SOCIETY

44

Volume: 61

Issue: 5

Pages: 425-429

Published: 1984

Author Information

Reprint Address: FOUDA, AS (reprint author)

MANSOURA UNIV,FAC SCI,DEPT CHEM,MANSOURA,EGYPT.

Publisher

INDIAN CHEMICAL SOC, 92 ACHARYA PRAFULLA CHANDRA RD ATTN:DR INDRAJIT KAR/EXEC SEC, CALCUTTA

700009, INDIA

Categories / Classification

Research Areas:Chemistry

Web of Science Categories:Chemistry, Multidisciplinary

Document Information

Document Type:Article

Language:English

Accession Number: WOS:A1984TL48300014

ISSN: 0019-4522

Other Information

IDS Number: TL483

Cited References in Web of Science Core Collection: 23

Times Cited in Web of Science Core Collection: 5