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Study on ethylbenzene and xylene conversion over modified ZSM-5

Paper ID Volume ID Publish Year Pages File Format Full-Text
43708 45984 2007 10 PDF Available
Title
Study on ethylbenzene and xylene conversion over modified ZSM-5
Abstract

The effects of modification of H-ZSM-5 on its catalytic performance in the conversion of ethylbenzene (EB) and m-xylene were studied. The methods of silica chemical vapor deposition and 5,6-benzoquinoline adsorption can inactivate the external surface of ZSM-5, thus suppressing disproportionation and transalkylation side reactions with which isomerization selectivity and xylene yield increase at the expense of EB conversion and p-xylene yield. In contrast, platinum impregnation cannot only retard the side reactions but can also enhance EB conversion, p-xylene yield and catalyst stability. Combining those simple techniques into a multiple modification procedure provoked a synergistic effect enabling optimum design of a Pt/Si/ZSM-5 catalyst. According to reaction mechanisms, the present paper also briefly reviews different generations of commercial isomerization processes.

Graphical abstractA multiple modification technique of H-ZSM-5, by combing silica chemical vapor deposition, 5,6-benzoquinoline adsorption and platinum impregnation, was developed having higher p-xylene yield and lower xylene loss than the existing commercial catalysts in the conversion of ethylbenzene (EB) and m-xylene.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Xylene isomerization; Ethylbenzene dealkylation; Surface modification; Aromatics interconversion; Selectivity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 321, Issue 2, 11 April 2007, Pages 125–134
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