t (deg.)s-1 supplementary materials mechanism of formation of framework fe3+ in bimetallic ag-fe...
TRANSCRIPT
S-1
Supplementary Materials
Mechanism of formation of framework Fe3+ in bimetallic Ag-Fe mordenites -
effective catalytic centers for deNOx reaction
M.G. Shelyapina1*, J. Gurgul2, K. Łątka3, P. Sánchez-López4, D. Bogdanov1, V. Petranovskii4, S. Fuentes4
1Saint Petersburg State University, 7/9 Universitetskaya nab., Saint Petersburg 199034, Russia 2Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239
Krakow, Poland 3M. Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland 4Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California,
C.P. 22860 México
*Corresponding author: Department of Nuclear Physics Research Methods, Saint Petersburg State University,
198504, Ulyanovskaya 1, Peterhof, Russia.
E-mail address: [email protected] (M.G. Shelyapina).
10 20 30 40 50
MOR
Ag-MOR-60
Fe-MOR-60
AgFe-MOR-60
FeAg-MOR-60
mAgFe-MOR-60
2(deg.)
36 37 38 39 402(deg.)
MOR
Ag-MOR-60
Fe-MOR-60
AgFe-MOR-60
FeAg-MOR-60
mAgFe-MOR-60
(a) (b)
Figure S1. Full XRD patterns of the studied samples synthetized at 60 oC (a) and a selected range with
expected fcc-Ag (111) diffraction peak (b).
S-2
Ag-MOR-20
AgFe-MOR-20
Na-MOR
Ag-MOR-60
AgFe-MOR-60
S-3
Figure S2. SEM images for all the studied materials.
FeAg-MOR-20
mAgFe-MOR-20
Fe-MOR-20
FeAg-MOR-60
mAgFe-MOR-60
Fe-MOR-60
S-4
-10 -5 0 5 10
431
432
433
434
435
436
437
438
Velocity (mm/s)
Nu
mbe
r o
f co
un
ts /
10
4
AgFe-MOR20
-10 -5 0 5 10
197
198
199
200
201
202
Num
ber
of counts
/10
4
Velocity (mm/s)
AgFe-MOR-60
-10 -5 0 5 10
145
146
147
Num
ber
of counts
/10
4
Velocity (mm/s)
FeAg-MOR-20
-10 -5 0 5 10
169
170
171
172
173
174
N
um
ber
of counts
/10
4
Velocity (mm/s)
FeAg-MOR-60
S-5
-10 -5 0 5 10
950
952
954
956
958
960
962
964
Velocity (mm/s)
Num
ber
of counts
/10
3
mAgFe-MOR-20
-10 -5 0 5 10
358
359
360
361
362
363
364
365
Num
ber
of counts
/10
4
Velocity (mm/s)
mAgFe-MOR-60
-10 -5 0 5 10
354
356
358
360
362
364
366
Num
ber
of counts
/10
4
Velocity (mm/s)
Fe-MOR-20
-10 -5 0 5 10
746
748
750
752
754
756
758
760
762
764
766
Velocity (mm/s)
Num
ber
of counts
/10
4
Fe-MOR-60
Figure S3. Room temperature 57Fe Mössbauer spectra and their decomposition for the studied Fe-containing materials. The light grey and
middle grey components are related to the Fe3+ in tetrahedral sites, (Td)1 and (Td)2, respectively. The dark grey component corresponds to
Fe3+ in octahedral sites, (Oh). Yellow line corresponds to magnetic/superparamagnetic components.