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New Acid Catalyst Comprising Heteropoly Acid on a Mesoporous Molecular Sieve MCM-41 Научная публикация

Общее Язык: Английский, Жанр: Статья (Full article),
Статус опубликования: Опубликована, Оригинальность: Оригинальная
Журнал Catalysis Letters
ISSN: 1011-372X , E-ISSN: 1572-879X
Вых. Данные Год: 1995, Том: 30, Номер: 1-4, Страницы: 241-252 Страниц : 12 DOI: 10.1007/BF00813690
Ключевые слова alkylation of phenols, heteropoly acid, molecular sieve MCM-41
Авторы Kozhevnikov I.V. 1 , Sinnema A. 2 , Jansen R.J. 2 , Pamin K. 2 , van Bekkum H. 2
Организации
1 Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia
2 Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands

Информация о финансировании (1)

1 Netherlands Organisation for Scientific Research

Реферат: New solid acid catalysts, consisting of heteropoly acid (HPA) H3PW12O40 (PW) supported on a mesoporous pure-silica molecular sieve MCM-41, have been prepared and characterized by nitrogen physisorption, X-ray diffraction, FT-IR, and31P magic angle spinning NMR. The PW/MCM-41 compositions with PW loadings from 10 to 50 wt% have ∼ 30 Å uniformly-sized mesopores. HPA retains the Keggin structure on the MCM-41 surface and forms finely dispersed HPA species. No HPA crystal phase is developed even at HPA loadings as high as 50 wt%. PW/MCM-41 exhibits higher catalytic activity than H2SO4 or bulk PW in liquid-phase alkylation of 4-t-butylphenol (TBP) by isobutene and styrene. In the alkylation of TBP by styrene, PW/MCM-41 shows a size selectivity compared to bulk PW and PW/SiO2, providing higher yields of a 2-(1-phenylethyl)-4-t-butylphenol, at the expense of the more bulky 2,6-bis-(1-phenylethyl)-4-t-butylphenol. The PW/MCM-41 compositions, having strong acid sites and a regular mesoporous system, are promising catalysts for the acid-type conversion and formation of organic compounds of large molecular size.
Библиографическая ссылка: Kozhevnikov I.V. , Sinnema A. , Jansen R.J. , Pamin K. , van Bekkum H.
New Acid Catalyst Comprising Heteropoly Acid on a Mesoporous Molecular Sieve MCM-41
Catalysis Letters. 1995. V.30. N1-4. P.241-252. DOI: 10.1007/BF00813690 WOS Scopus РИНЦ
Даты:
Опубликована в печати: 1 мар. 1994 г.
Поступила в редакцию: 20 мая 1994 г.
Принята к публикации: 26 окт. 1994 г.
Идентификаторы:
Web of science WOS:A1995QE23400024
Scopus 2-s2.0-34249761458
РИНЦ 30903337
Chemical Abstracts 1995:333874
Chemical Abstracts (print) 122:116070
Альметрики: