Elementary Steps of Catalytic Reactions Occurring on Metallic Alloy Nanoparticles | Sciact - CRIS-система Института катализа

Elementary Steps of Catalytic Reactions Occurring on Metallic Alloy Nanoparticles Научная публикация

Журнал

ChemPhysChem
ISSN: 1439-4235 , E-ISSN: 1439-7641

Вых. Данные

Год: 2024, Номер статьи : e202400521, Страниц : 22 DOI: 10.1002/cphc.202400521

Ключевые слова

Metallic alloy • Nanoparticles • Segregation • Catalytic reactions • Kinetics • Models

Авторы

Zhdanov Vladimir P. ¹

Организации

1	Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk 630090, Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

FWUR-2024-0032

Catalytic reactions occurring in an adsorbed overlayer on metallic alloy nanoparticles are of high interest in the context of applications in the chemical industry. The understanding of the corresponding kinetics is, however, still limited. One of the reasons of this state of the art is the interplay between adsorption and adsorbate-influenced segregation of metal atoms inside alloy nanoparticles. I scrutinize this interplay by using a generic field model of segregation and the mean-field approximation in order to describe adsorption, desorption, and elementary catalytic reactions. Under steady-state conditions, the segregation is demonstrated to be manifested in the change of the dependence of the activation energies of desorption or elementary reactions on coverage, and the sign of this change is positive. The effect of this change on the apparent reaction orders is briefly discussed as well.

Zhdanov V.P.
Elementary Steps of Catalytic Reactions Occurring on Metallic Alloy Nanoparticles
ChemPhysChem. 2024. e202400521 :1-22. DOI: 10.1002/cphc.202400521 PMID OpenAlex

Поступила в редакцию:	5 мая 2024 г.
Принята к публикации:	17 сент. 2024 г.
Опубликована online:	20 сент. 2024 г.

PMID (PubMed):	39302252
OpenAlex:	W4402665522

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