Formation of Pd-Ag nanoparticles in supported catalysts based on the heterobimetallic complex PdAg2(OAc)4(HOAc)4 Научная публикация
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 2016, Том: 57, Номер: 6, Страницы: 859-865 Страниц : 7 DOI: 10.1134/S0023158416060112 | ||||
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Реферат:
The formation of Pd-Ag nanoparticles deposited from the heterobimetallic acetate complex PdAg2(OAc)(4)(HOAc)(4) on alpha-Al2O3, gamma-Al2O3, and MgAl2O4 has been investigated by high-resolution trans-mission electron microscopy, temperature-programmed reduction, and IR spectroscopy of adsorbed CO. The reduction of PdAg2(OAc)(4)(HOAc)(4) supported on gamma-Al2O3 and MgAl2O4 takes place in two steps (at 15-245 and 290-550A degrees C) and yields Pd-Ag particles whose average size is 6-7 nm. The reduction of the Pd-Ag catalyst supported on alpha-Al2O3 occurs in a much narrower temperature range (15-200A degrees C) and yields larger nanoparticles (similar to 10-20 nm). The formation of Pd-Ag alloy nanoparticles in all of the samples is demonstrated by IR spectroscopy of adsorbed CO, which indicates a marked weakening of the absorption band of the bridged form of adsorbed carbon monoxide and a > 30-cm(-1) bathochromic shift of the linear adsorbed CO band. IR spectroscopic data for PdAg2/alpha-Al2O3 suggest that Pd in this sample occurs as isolated atoms on the surface of bimetallic nanoparticles, as is indicated by the almost complete absence of bridged adsorbed CO bands and by a significant weakening of the Pd-CO bond relative to the same bond in the bimetallic samples based on gamma-Al2O3 and MgAl2O4 and in the monometallic reference sample Pd/gamma-Al2O3.
Библиографическая ссылка:
Rassolov A.V.
, Markov P.V.
, Bragina G.O.
, Baeva G.N.
, Krivoruchenko D.S.
, Mashkovskii I.S.
, Yakushev I.A.
, Vargaftik M.N.
, Stakheev A.Y.
Formation of Pd-Ag nanoparticles in supported catalysts based on the heterobimetallic complex PdAg2(OAc)4(HOAc)4
Kinetics and Catalysis. 2016. V.57. N6. P.859-865. DOI: 10.1134/S0023158416060112 WOS Scopus РИНЦ CAPlus OpenAlex
Formation of Pd-Ag nanoparticles in supported catalysts based on the heterobimetallic complex PdAg2(OAc)4(HOAc)4
Kinetics and Catalysis. 2016. V.57. N6. P.859-865. DOI: 10.1134/S0023158416060112 WOS Scopus РИНЦ CAPlus OpenAlex
Оригинальная версия:
Рассолов А.В.
, Марков П.В.
, Брагина Г.О.
, Баева Г.Н.
, Криворученко Д.С.
, Машковский И.С.
, Якушев И.А.
, Варгафтик М.Н.
, Стахеев А.Ю.
Формирование наночастиц Pd–Ag в нанесенных катализаторах на основе гетеробиметаллического комплекса PdAg2(OAc)4(HOAc)4
Кинетика и катализ. 2016. Т.57. №6. С.865-873. DOI: 10.7868/S0453881116060125 РИНЦ OpenAlex
Формирование наночастиц Pd–Ag в нанесенных катализаторах на основе гетеробиметаллического комплекса PdAg2(OAc)4(HOAc)4
Кинетика и катализ. 2016. Т.57. №6. С.865-873. DOI: 10.7868/S0453881116060125 РИНЦ OpenAlex
Даты:
| Поступила в редакцию: | 16 июн. 2016 г. |
| Опубликована в печати: | 1 нояб. 2016 г. |
Идентификаторы БД:
| Web of science: | WOS:000389905600018 |
| Scopus: | 2-s2.0-84999664642 |
| РИНЦ: | 27581569 |
| Chemical Abstracts: | 2016:1986093 |
| OpenAlex: | W2559530993 |