EFFECT OF THE SUPPORT NATURE ON THE PHYSICOCHEMICAL PROPERTIES OF PLATINUM CATALYSTS FOR AMMONIA OXIDATION
D A Svintsitskiy
1
,
E M Slavinskaya
1
,
L S Kibis
1
,
A I Stadnichenko
1
,
E. A. Fedorova
1
,
O A Stonkus
1
,
E.V Korneeva
1
,
A. V. Romanenko
1
,
Publication type: Journal Article
Publication date: 2021-04-01
scimago Q4
wos Q4
SJR: 0.211
CiteScore: 1.9
Impact factor: 1.4
ISSN: 00224766, 15738779
Materials Chemistry
Inorganic Chemistry
Physical and Theoretical Chemistry
Abstract
Platinum catalysts prepared by incipient wetness impregnation of different supports (TiO2, WO3/TiO2, CeO2, Al2O3, zeolite ZSM-5) are tested in the ammonia oxidation reaction (TPR–NН3+О2) and characterized by a combination of physicochemical (powder XRD, TEM, XPS) and kinetic (TPR–H2, TPD–NH3) techniques. On the surface of all catalysts, platinum is present in the highly dispersed form (average particle size <1.5 nm), providing the activity for ammonia oxidation above 150 °C. In the temperature range 150-250 °C, the main oxidation products are nitrous oxide and molecular nitrogen whereas NOx oxides start to form at T > 250 °C. The highest catalytic activity is observed when platinum is supported on TiO2 promoted with tungsten. The introduction of tungsten modifies the acidity of the surface and affects the redox properties of platinum catalysts. The role of the support is found to be the stabilization of oxidized or reduced platinum forms on the surface, thus determining the total activity in the ammonia oxidation reaction.
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Svintsitskiy D. A. et al. EFFECT OF THE SUPPORT NATURE ON THE PHYSICOCHEMICAL PROPERTIES OF PLATINUM CATALYSTS FOR AMMONIA OXIDATION // Journal of Structural Chemistry. 2021. Vol. 62. No. 4. pp. 598-612.
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Svintsitskiy D. A., Slavinskaya E. M., Kibis L. S., Stadnichenko A. I., Fedorova E. A., Stonkus O. A., Korneeva E., Romanenko A. V., BORONIN A. EFFECT OF THE SUPPORT NATURE ON THE PHYSICOCHEMICAL PROPERTIES OF PLATINUM CATALYSTS FOR AMMONIA OXIDATION // Journal of Structural Chemistry. 2021. Vol. 62. No. 4. pp. 598-612.
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TY - JOUR
DO - 10.1134/S0022476621040120
UR - https://doi.org/10.1134/S0022476621040120
TI - EFFECT OF THE SUPPORT NATURE ON THE PHYSICOCHEMICAL PROPERTIES OF PLATINUM CATALYSTS FOR AMMONIA OXIDATION
T2 - Journal of Structural Chemistry
AU - Svintsitskiy, D A
AU - Slavinskaya, E M
AU - Kibis, L S
AU - Stadnichenko, A I
AU - Fedorova, E. A.
AU - Stonkus, O A
AU - Korneeva, E.V
AU - Romanenko, A. V.
AU - BORONIN, A.I.
PY - 2021
DA - 2021/04/01
PB - Pleiades Publishing
SP - 598-612
IS - 4
VL - 62
SN - 0022-4766
SN - 1573-8779
ER -
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BibTex (up to 50 authors)
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@article{2021_Svintsitskiy,
author = {D A Svintsitskiy and E M Slavinskaya and L S Kibis and A I Stadnichenko and E. A. Fedorova and O A Stonkus and E.V Korneeva and A. V. Romanenko and A.I. BORONIN},
title = {EFFECT OF THE SUPPORT NATURE ON THE PHYSICOCHEMICAL PROPERTIES OF PLATINUM CATALYSTS FOR AMMONIA OXIDATION},
journal = {Journal of Structural Chemistry},
year = {2021},
volume = {62},
publisher = {Pleiades Publishing},
month = {apr},
url = {https://doi.org/10.1134/S0022476621040120},
number = {4},
pages = {598--612},
doi = {10.1134/S0022476621040120}
}
Cite this
MLA
Copy
Svintsitskiy, D. A., et al. “EFFECT OF THE SUPPORT NATURE ON THE PHYSICOCHEMICAL PROPERTIES OF PLATINUM CATALYSTS FOR AMMONIA OXIDATION.” Journal of Structural Chemistry, vol. 62, no. 4, Apr. 2021, pp. 598-612. https://doi.org/10.1134/S0022476621040120.