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A novel, shape-selective H-MCM-22/MCM-41 composite catalyst: Synthesis, characterization and catalytic performance

Paper ID Volume ID Publish Year Pages File Format Full-Text
51161 46833 2010 5 PDF Available
Title
A novel, shape-selective H-MCM-22/MCM-41 composite catalyst: Synthesis, characterization and catalytic performance
Abstract

A novel, shape-selective H-MCM-22/MCM-41 composite catalyst is synthesized for the first time by overgrowing MCM-41 over the external surface of H-MCM-22. Results of FT-IR characterization with 2,4-dimethylquinoline adsorption indicate that the Brønsted acidic sites of H-MCM-22 located on the external surface can virtually be completely covered by the generated layer of MCM-41. When applied to the synthesis of p-xylene by the alkylation of toluene with dimethyl carbonate, the H-MCM-22/MCM-41 composite exhibits significant enhancement in p-xylene selectivity, which can be ascribed to the decrease in the number of external Brønsted acid sites of the composite.

Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights►MCM-41 layer overgrows on the external surface of H-MCM-22. ►The external Brønsted acid sites of H-MCM-22 are covered by MCM-41. ►High selectivity for para-xylene is obtained over the H-MCM-22/MCM-41composite.

Keywords
Composite; H-MCM-22/MCM-41; Para-Selectivity; Alkylation; Dimethyl carbonate
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A novel, shape-selective H-MCM-22/MCM-41 composite catalyst: Synthesis, characterization and catalytic performance
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 2, 15 November 2010, Pages 95–99
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