Structural and Mechanistic Aspects of the Dehydration of Isomeric Butyl Alcohols over Porous Aluminosilicate Acid Catalysts Review
Journal |
Advances in Catalysis
ISSN: 0360-0564 |
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Output data | Year: 1996, Volume: 41, Pages: 335-358 Pages count : 24 DOI: 10.1016/S0360-0564(08)60043-7 | ||||
Tags | ZEOLITE H-ZSM-5; ISOBUTYL ALCOHOL; AMORPHOUS ALUMINOSILICATE; PORE CONFINEMENT; OXIDE CATALYSTS; CARBENIUM ION; TERT-BUTANOL; SOLID ACIDS; N-BUTANOL; NAH-ZSM-5 | ||||
Authors |
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Affiliations |
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Funding (4)
1 | Президиум РАН | |
2 | The Royal Insitution of Great Britain | |
3 | Engineering and Physical Sciences Research Council | |
4 | Royal Society |
Abstract:
This chapter discusses the structural and mechanistic aspects of the dehydration of isomeric butyl alcohols over porous aluminosilicate acid catalysts. Reaction pathways are found to be identical for all the butyl alcohols and the catalysts studied, with respect both to the main reaction stream and to the side reactions. However, depending on the particular structure of both the reactant and catalyst, the observed reaction rates and selectivity toward various products can be dramatically different, even under similar reaction conditions. The dehydration of butyl alcohols over solid molecular-sieve acid catalysts (HZSM-5) and amorphous aluminosilicate (AAS) catalysts mechanistically resembles homogeneous acid-catalyzed reactions, whereby carbenium ions in their classical forms serve as key reaction intermediates. For reaction mixtures consisting of molecules with dimensions close to the cross-sections of the catalyst pores (as in the case of butyl alcohol dehydration in HZSM-5), the reacting mixture may be envisaged as a liquid with dimensions less than three. A reactant may play a twofold role in catalysis, acting not only as a reactant but also as an agent that protects the active sites from becoming involved in undesirable size reactions.
Cite:
Zamaraev K.I.
, Thomas J.M.
Structural and Mechanistic Aspects of the Dehydration of Isomeric Butyl Alcohols over Porous Aluminosilicate Acid Catalysts
Advances in Catalysis. 1996. V.41. P.335-358. DOI: 10.1016/S0360-0564(08)60043-7 WOS Scopus РИНЦ
Structural and Mechanistic Aspects of the Dehydration of Isomeric Butyl Alcohols over Porous Aluminosilicate Acid Catalysts
Advances in Catalysis. 1996. V.41. P.335-358. DOI: 10.1016/S0360-0564(08)60043-7 WOS Scopus РИНЦ
Dates:
Published print: | Jan 1, 1996 |
Published online: | Apr 10, 2008 |
Identifiers:
Web of science | WOS:A1996BH77P00004 |
Scopus | 2-s2.0-0001336475 |
Elibrary | 15534799 |
Chemical Abstracts | 1996:518073 |
Chemical Abstracts (print) | 125:194748 |
OpenAlex | W1630774331 |