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Effect of Ag Loading on the Adsorption/Desorption Properties of ZSM-5 towards Toluene Научная публикация

Журнал Reaction Kinetics, Mechanisms and Catalysis
ISSN: 1878-5190 , E-ISSN: 1878-5204
Вых. Данные Год: 2016, Том: 119, Номер: 2, Страницы: 629-640 Страниц : 12 DOI: 10.1007/s11144-016-1060-3
Ключевые слова Adsorption/desorption, Ag–ZSM-5, Cold-start, DFT method, Silver clusters, Toluene
Авторы Temerev Victor L. 1 , Vedyagin Aleksey A. 2,3 , Afonasenko Tatyana N. 1 , Iost Kristina N. 1 , Kotolevich Yulia S. 1 , Baltakhinov Vladimir P. 2 , Tsyrulʹnikov Pavel G. 1
Организации
1 Institute of Hydrocarbon Processing SB RAS, Neftezavodskaya St., 54, Omsk, Russia 644040
2 Boreskov Institute of Catalysis SB RAS, Pr. Ac. Lavrentieva, 5, Novosibirsk, Russia 630090
3 National Research Tomsk Polytechnic University, Lenin Av., 30, Tomsk, Russia 634050

Реферат: A series of Ag–ZSM-5 samples with different Ag loading (0–10 wt%) was prepared via ion exchange. All samples were characterized by similar adsorption behavior towards toluene vapors. The concentration of Ag as well as the nature of Ag species were found to affect strongly the strength of toluene adsorption thus resulting in different profiles of temperature programmed desorption. The water vapors were shown to have a negative effect on adsorption properties of low Ag samples. It was suggested that the increase of Ag loading leads to the appearance of Agnδ+ (n = 2–8) clusters instead of monoatomic Ag+ sites predominantly existed in the case of the samples with low silver loading. It was found experimentally and explained theoretically by means of DFT calculations that these clusters exceed the monoatomic species by the strength of toluene adsorption even in the presence of water vapors. At the same time, SiO2/Al2O3 ratio in Ag–ZSM-5 samples was found to have no significant effect on adsorption/desorption properties of the zeolites.
Библиографическая ссылка: Temerev V.L. , Vedyagin A.A. , Afonasenko T.N. , Iost K.N. , Kotolevich Y.S. , Baltakhinov V.P. , Tsyrulʹnikov P.G.
Effect of Ag Loading on the Adsorption/Desorption Properties of ZSM-5 towards Toluene
Reaction Kinetics, Mechanisms and Catalysis. 2016. V.119. N2. P.629-640. DOI: 10.1007/s11144-016-1060-3 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
Поступила в редакцию: 28 июн. 2016 г.
Принята к публикации: 28 июл. 2016 г.
Опубликована online: 3 авг. 2016 г.
Опубликована в печати: 1 дек. 2016 г.
Идентификаторы БД:
Web of science: WOS:000388189000019
Scopus: 2-s2.0-84982840842
РИНЦ: 29465645
Chemical Abstracts: 2016:1285503
OpenAlex: W2505587904
Цитирование в БД:
БД Цитирований
Web of science 20
Scopus 24
РИНЦ 10
OpenAlex 23
Альметрики: