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Transalkylation of diisopropylbenzenes with benzene over hierarchical beta zeolite

Paper ID Volume ID Publish Year Pages File Format Full-Text
42182 45913 2010 6 PDF Available
Title
Transalkylation of diisopropylbenzenes with benzene over hierarchical beta zeolite
Abstract

The catalytic performance of the hierarchical beta zeolite prepared via the dry gel conversion method was compared with that of the conventional beta zeolite for transalkylation of diisopropylbenzene with benzene. The results indicate that diisopropylbenzene conversion decreases from 74% to 29% after a reaction time of 32 h over the conventional beta zeolite. However, for the hierarchical beta zeolite, diisopropylbenzene conversion still remains above 60% after 32 h under the same reaction conditions. In order to learn the factors leading to the difference in catalytic activity, we studied pore structure, crystal size and acidity of the hierarchical beta zeolite and the conventional beta zeolite and we discussed their effects on catalytic activity. The results reveal that the better activity and stability of the hierarchical beta zeolite is mainly due to the presence of meso/macropores and nanocrystals for the liquid transalkylation reaction.

Graphical abstractThe hierarchical beta zeolite has better activity compared with the conventional beta zeolite for the transalkylation of diisopropylbenzene with benzene. By studying the effects of pore structure, crystal size and acidity on catalytic activity, one finds that the better activity of the hierarchical beta zeolite is mainly due to the presence of meso/macropores and nanocrystals.Figure optionsDownload full-size imageDownload high-quality image (86 K)Download as PowerPoint slide

Keywords
Hierachical; Zeolite; Meso/macropores; Transalkylation; Liquid
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Transalkylation of diisopropylbenzenes with benzene over hierarchical beta zeolite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 379, Issues 1–2, 15 May 2010, Pages 166–171
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