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Vapour phase reaction of toluene with ethyl acetate over Al-MCM-41 molecular sieves

Paper ID Volume ID Publish Year Pages File Format Full-Text
53186 46921 2006 5 PDF Available
Title
Vapour phase reaction of toluene with ethyl acetate over Al-MCM-41 molecular sieves
Abstract

Al-MCM-41 molecular sieves of Si/Al ratios 25, 50 and 150 were synthesised hydrothermally. The vapour phase reaction of toluene with ethyl acetate was studied over these catalysts at 175, 200, 225, 250, 275 °C. The products were p-xylene, ethyl benzene (EB), p-ethyl toluene (p-ET), m-ethyl toluene (m-ET), p-methyl acetophenone (p-MAP), o-methyl acetophenone (o-MAP). Transalkylation of toluene to p-xylene, ethylation of toluene to p-ET and isomerisation of the latter to m-ET were observed as the major reactions with minor acylation of toluene. The transalkylation and isomerisation were found to be strongly influenced by the feed ratio and WHSV, respectively. The study of time-on-stream indicated blocking of particularly strong acid sites by coke, which was suggested advantageous in order to reduce such site dependent transalkylation and isomerisation.

Keywords
Toluene; Ethyl acetate; Al-MCM-41; p-Ethyl toluene
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Vapour phase reaction of toluene with ethyl acetate over Al-MCM-41 molecular sieves
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 1, January 2006, Pages 47–51
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us