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Formation of Isolated Single-Atom Pd1 Sites on the Surface of Pd–Ag/Al2O3 Bimetallic Catalysts Научная публикация

Журнал Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210
Вых. Данные Год: 2020, Том: 61, Номер: 5, Страницы: 758-767 Страниц : 10 DOI: 10.1134/s0023158420050080
Ключевые слова single-atom alloy catalysts, isolated Pd1 sites, adsorption-induced segregation, bimetallic catalysts, Pd–Ag, heterogeneous catalysts
Авторы Rassolov A.V. 1 , Bragina G.O. 1 , Baeva G.N. 1 , Smirnova N.S. 1 , Kazakov A.V. 1 , Mashkovsky I.S. 1 , Bukhtiyarov A.V. 2 , Zubavichus Ya.V. 2 , Stakheev A.Yu. 1
Организации
1 Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences
2 Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences

Информация о финансировании (2)

1 Российский научный фонд 16-13-10530
2 Российский научный фонд 19-13-00285

Реферат: The structure of Pd–Ag/Al2O3 samples with different Ag/Pd ratios has been studied by a complex of physicochemical methods (H2-TPR, XRD, H2-TPD, TEM). Catalysts have been synthesized by supporting an active component on α-Al2O3 and γ-Al2O3. X-ray diffraction analysis has revealed the formation of a Pd–Ag substitutional solid solution with a face-centered cubic crystal lattice owing to alloying of the Pd and Ag components. An increase in the Ag content in the composition of bimetallic nanoparticles hinders the formation of palladium hydride (PdHx), which is completely suppressed at a ratio of Ag/Pd > 0.5. Infrared spectroscopy of adsorbed CO has revealed the formation of single-atom Pd1 sites on the surface of supported Pd–Ag bimetallic nanoparticles isolated from each other by silver atoms. Analysis of the structural stability of isolated Pd1 sites has shown that, under conditions of CO adsorption at 150°C, the stability of the sites can be provided by an increase in the Ag/Pd ratio to ≥2.
Библиографическая ссылка: Rassolov A.V. , Bragina G.O. , Baeva G.N. , Smirnova N.S. , Kazakov A.V. , Mashkovsky I.S. , Bukhtiyarov A.V. , Zubavichus Y.V. , Stakheev A.Y.
Formation of Isolated Single-Atom Pd1 Sites on the Surface of Pd–Ag/Al2O3 Bimetallic Catalysts
Kinetics and Catalysis. 2020. V.61. N5. P.758-767. DOI: 10.1134/s0023158420050080 WOS Scopus РИНЦ CAPlus OpenAlex
Оригинальная: Рассолов А.В. , Брагина Г.О. , Баева Г.Н. , Смирнова Н.С. , Казаков А.В. , Машковский И.С. , Бухтияров А.В. , Зубавичус Я.В. , Стахеев А.В.
Формирование изолированных моноатомных центров Pd1 на поверхности биметаллических Pd–Ag/Al2O3-катализаторов
Кинетика и катализ. 2020. Т.61. №5. С.676-686. DOI: 10.31857/S045388112005010XRSCI РИНЦ OpenAlex
Даты:
Поступила в редакцию: 24 янв. 2020 г.
Принята к публикации: 6 мая 2020 г.
Опубликована в печати: 1 сент. 2020 г.
Опубликована online: 7 окт. 2020 г.
Идентификаторы БД:
Web of science: WOS:000575850800006
Scopus: 2-s2.0-85092207977
РИНЦ: 45271723
Chemical Abstracts: 2020:2010089
OpenAlex: W3091926736
Цитирование в БД:
БД Цитирований
Scopus 18
Web of science 15
РИНЦ 20
OpenAlex 23
Альметрики: