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The "Alkyl" and "Carbenium" Pathways of Methane Activation on Ga-Modified Zeolite BEA: 13C Solid-State NMR and GC-MS Study of Methane Aromatization in the Presence of Higher Alkane Научная публикация

Журнал The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455
Вых. Данные Год: 2010, Том: 114, Номер: 49, Страницы: 21555-21561 Страниц : 7 DOI: 10.1021/jp1078899
Ключевые слова TEMPERATURE NONOXIDATIVE ACTIVATION; DENSITY-FUNCTIONAL THEORY; SHORT-CHAIN ALKANES; NONFRAMEWORK GALLIUM; LIGHT ALKANES; CO-REACTANT; PROPANE; DEHYDROGENATION; HYDROCARBONS; REACTIVITY
Авторы Luzgin Mikhail V. 1 , Gabrienko Anton A. 1 , Rogov Vladimir A. 1 , Toktarev Alexander V. 1 , Parmon Valentin N. 1 , Stepanov Alexander G. 1
Организации
1 Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russia

Информация о финансировании (1)

1 Российский фонд фундаментальных исследований 10-03-00555

Реферат: By using 13C solid-state NMR spectroscopy and GC-MS analysis, the activation of methane and coaromatization of methane and propane have been monitored on gallium-modified zeolite BEA at 573−823 K. A noticeable degree involvement of the 13C-label from methane-13C into the aromatic reaction products (benzene, toluene) has been demonstrated. The major intermediate of the methane activation represents gallium-methyl species, which are formed by methane dissociative adsorption on Ga2O3 species of the zeolite. The minor species of methane activation, Ga-methoxy groups, provide the involvement of methane into aromatics by the methylation of aromatic molecules, which are generated exclusively from propane, by the mechanism of electrophilic substitution. Ga-methyl species can serve as methylating nucleophilic agent for the reaction of nucleophilic substitution with participation of aromatic molecules, which contain the electron-withdrawing substitutes.
Библиографическая ссылка: Luzgin M.V. , Gabrienko A.A. , Rogov V.A. , Toktarev A.V. , Parmon V.N. , Stepanov A.G.
The "Alkyl" and "Carbenium" Pathways of Methane Activation on Ga-Modified Zeolite BEA: 13C Solid-State NMR and GC-MS Study of Methane Aromatization in the Presence of Higher Alkane
The Journal of Physical Chemistry C. 2010. V.114. N49. P.21555-21561. DOI: 10.1021/jp1078899 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
Поступила в редакцию: 20 авг. 2010 г.
Принята к публикации: 27 окт. 2010 г.
Опубликована online: 11 нояб. 2010 г.
Опубликована в печати: 16 дек. 2010 г.
Идентификаторы БД:
Web of science: WOS:000284990800091
Scopus: 2-s2.0-78650281081
РИНЦ: 16705776
Chemical Abstracts: 2010:1401196
Chemical Abstracts (print): 154:10400
OpenAlex: W2318053400
Цитирование в БД:
БД Цитирований
Web of science 69
Scopus 72
РИНЦ 68
OpenAlex 77
Альметрики: