WELCOM

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GREEN CHEMISTRYwith

ZEOLITE CATALYST

Chemical industry has its share in polluting the environment and today it has realized that the time has come to make the industry more and more efficient not only in terms of profit and yield, but more accountable in terms of pollution abatement and eco-friendliness

This has led to term GREEN CHEMISTRY Traditionally,organic synthesis is highly

logical, but highly inefficient . This situation was allowed to continue mainly because

GREEN CHEMISTRY

ACHIEVMENTS IN GREEN CHEMISTRY Fuel cells for cellular phones Oxidation cracking process – formation ethylene

The synthesis of ibuprofen Safer marine antifouling compound “sea-nine”

Technology eliminating CFC

ZEOLITES

Zeolites are crystalline aluminosilicates with exchangeable cations

The cations can be exchanged with protons that make them acidic solids

Si:Al ratio can vary in zeolites from 1 to infinity No.of acidic sites decreases with increase in the

Si:Al ratio Strength of the acidic sites increases with the

Si:Al ratio There are also Lewis acid sites(tri-coordinated Al) They have micro-pores of entry port size varying

from about 3 to 12A

ZEOLITE STRUCTURE

Zeolites are formed by oxygen-sharing T(Si or Al) atoms, each T atom linked to four oxygen making tetrahedra

These tetrahedra are linked to form rings containing equal no. of oxygen and silicon atoms

The rings share common oxygen(or silicon) forming different polyhedra

The polyhedra then join by sharing common oxygen(or silicon) forming the three dimensional net work structure giving rise to pores

The pores may be all in one direction or many run in several directions

Zeolite pore structure

Reduction of atmospheric oxides of nitrogen(NOx)

Cutting emission of VOCsProcess improvements in CPI.

ZEOLITE ACCOMPLISHMENTS

IMPROVING ZEOLITE PERFORMANCE

CONCLUSION

SALMANUL FARISSRUTHY.K.PSHAMINISUFAIRASHAFEENAMUHAMMED ASLAM

PRESENTED BY,SHAMJITHA.C

Thank

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