fulltext.study @t Gmail

Shape selectivity of MWW-type aluminosilicate zeolites in the alkylation of toluene with methanol

Paper ID Volume ID Publish Year Pages File Format Full-Text
44063 46002 2007 6 PDF Available
Title
Shape selectivity of MWW-type aluminosilicate zeolites in the alkylation of toluene with methanol
Abstract

We investigated the alkylation of toluene with methanol at 250 °C over MCM-22 and ITQ-2 zeolites possessing an MWW structure. Whereas ITQ-2, produced by the delamination of MCM-22 precursor, showed a poor p-xylene selectivity of 23% at 1.7% of the level of toluene conversion, a high p-xylene selectivity of 80% at 0.6% of the level of toluene conversion was obtained by poisoning the external surface of ITQ-2 with collidine. Similarly, MCM-22 treated with collidine showed a high p-xylene selectivity of 74% at 3.8% of the level of toluene conversion. We concluded that both interlayer and intralayer 10-membered ring (10MR) micropores in the MWW structure caused the shape-selective formation of p-xylene in the alkylation of toluene with methanol.

Graphical abstractWe investigated the alkylation of toluene with methanol over MCM-22 and ITQ-2 zeolites possessing an MWW structure. A high p-xylene selectivity was obtained by poisoning the external surface of ITQ-2 or MCM-22 with collidine. We concluded that both interlayer and intralayer 10MR micropores in the MWW structure caused the shape-selective formation of p-xylene in the alkylation of toluene with methanol.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
MCM-22 zeolite; ITQ-2 zeolite; Alkylation of toluene with methanol; Shape selectivity; Collidine
First Page Preview
Shape selectivity of MWW-type aluminosilicate zeolites in the alkylation of toluene with methanol
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 318, 20 February 2007, Pages 22–27
Authors
, , , ,
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