New Acid Catalyst Comprising Heteropoly Acid on a Mesoporous Molecular Sieve MCM-41 Full article
Journal |
Catalysis Letters
ISSN: 1011-372X , E-ISSN: 1572-879X |
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Output data | Year: 1995, Volume: 30, Number: 1-4, Pages: 241-252 Pages count : 12 DOI: 10.1007/BF00813690 | ||||
Tags | alkylation of phenols, heteropoly acid, molecular sieve MCM-41 | ||||
Authors |
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Affiliations |
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Funding (1)
1 | Netherlands Organisation for Scientific Research |
Abstract:
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.
Cite:
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
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
Dates:
Published print: | Mar 1, 1994 |
Submitted: | May 20, 1994 |
Accepted: | Oct 26, 1994 |
Identifiers:
Web of science | WOS:A1995QE23400024 |
Scopus | 2-s2.0-34249761458 |
Elibrary | 30903337 |
Chemical Abstracts | 1995:333874 |
Chemical Abstracts (print) | 122:116070 |
OpenAlex | W2073235332 |