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Vapor-phase tert-butylation of p-hydroxytoluene over Al-MCM-41 and PWA supported Al-MCM-41 mesoporous molecular sieve catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
52702 46882 2007 9 PDF Available
Title
Vapor-phase tert-butylation of p-hydroxytoluene over Al-MCM-41 and PWA supported Al-MCM-41 mesoporous molecular sieve catalysts
Abstract

Mesoporous Al-MCM-41 and PWA, impregnated with different weight percent catalysts have been prepared and investigated by combining structural and textural properties of both the catalysts. The catalytic behavior of both the Al-MCM-41 and PWA impregnated catalysts were evaluated for tert-butylation of p-hydroxy toluene. Among the series of catalysts, 20 wt% PWA impregnated catalyst was found to have superior activity for the alkylation of p-hydroxytoluene. The activity was increased with more PWA content upto 20 wt%. This implied that the PWA loaded Al-MCM-41catalysts had enhanced acid strength, thereby increasing the Bronsted acid sites for the tertiarybutylation of p-hydroxytoluene. Various parameters viz. feed rate, temperature, feed ratio of p-HT and MTBE, Time on stream and WHSV were optimized for the reaction.

Keywords
p-hydroxytoluene; Tertiarybutylation; MTBE; Phospotungstic acid (PWA); Heteropoly acid; Butylated hydroxytoluene (BHT)
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Vapor-phase tert-butylation of p-hydroxytoluene over Al-MCM-41 and PWA supported Al-MCM-41 mesoporous molecular sieve catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 4, April 2007, Pages 635–643
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
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us