In situ XPS Study of the Size Effect in the Interaction of NO with the Surface of the Model Ag/Al2O3/FeCrAl Catalysts Full article
Journal |
Russian Chemical Bulletin
ISSN: 1066-5285 , E-ISSN: 1573-9171 |
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Output data | Year: 2015, Volume: 64, Number: 12, Pages: 2780-2785 Pages count : 6 DOI: 10.1007/s11172-015-1225-7 | ||||||
Tags | Ag nanoparticles, Ag/Al2O3, nitrogen oxides NOx, selective catalytic reduction, size effect | ||||||
Authors |
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Affiliations |
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Funding (1)
1 | Russian Science Foundation | 14-23-00146 |
Abstract:
The interaction of NO with the surface of model Ag/Al2O3/FeCrAl catalysts containing Ag nanoparticles of different size (1 and 3 nm) was studied. The use of the Auger parameter αAg (Eb(Ag3d5/2) + Ekin(Ag MVV)) made it possible to reliably identify the change in the chemical state of silver cluster upon their interaction with О2 and NO. The oxygen treatment leads to the oxidation of small Ag nanoparticles (1 nm) and formation of AgOx clusters resulted in the intensive formation of nitrite—nitrate structures on the step of the interaction with NO. These structures are localized on both the silver clusters and Al2O3 surface. An increase in the size of Ag0 nanoparticles to 3 nm results in an increase in the stability of these structures and impedes the Ag0 → AgOx transition, due to which the formation of surface groups NO2–/NO3– is suppressed. The data obtained make it possible to explain the dependence of the activity of the Ag/Al2O3 catalysts in the selective reduction of NO on the Ag nanoparticle size.
Cite:
Bukhtiyarov A.V.
, Stakheev A.Y.
, My'tareva A.I.
, Prosvirin I.P.
, Bukhtiyarov V.I.
In situ XPS Study of the Size Effect in the Interaction of NO with the Surface of the Model Ag/Al2O3/FeCrAl Catalysts
Russian Chemical Bulletin. 2015. V.64. N12. P.2780-2785. DOI: 10.1007/s11172-015-1225-7 WOS Scopus РИНЦ
In situ XPS Study of the Size Effect in the Interaction of NO with the Surface of the Model Ag/Al2O3/FeCrAl Catalysts
Russian Chemical Bulletin. 2015. V.64. N12. P.2780-2785. DOI: 10.1007/s11172-015-1225-7 WOS Scopus РИНЦ
ArticleLinkType.TRANSLATED_TO_ORIGINAL:
Бухтияров А.В.
, Стахеев А.Ю.
, Мытарева А.И.
, Просвирин И.П.
, Бухтияров В.И.
Исследование «размерного эффекта» в процессе взаимодействия NO c поверхностью модельных катализаторов Ag/Al2O3/FeCrAl методом РФЭС in situ
Известия Академии наук. Серия химическая. 2015. №12. С.2780-2785. РИНЦ
Исследование «размерного эффекта» в процессе взаимодействия NO c поверхностью модельных катализаторов Ag/Al2O3/FeCrAl методом РФЭС in situ
Известия Академии наук. Серия химическая. 2015. №12. С.2780-2785. РИНЦ
Dates:
Submitted: | Sep 7, 2015 |
Published print: | Dec 1, 2015 |
Published online: | Sep 20, 2016 |
Identifiers:
Web of science | WOS:000383864900006 |
Scopus | 2-s2.0-84988423240 |
Elibrary | 27572528 |
Chemical Abstracts | 2016:1548120 |
Chemical Abstracts (print) | 166:213865 |
OpenAlex | W2519996098 |