fulltext.study @t Gmail

A novel method to prepare shape-selective catalysts by complexation–impregnation

Paper ID Volume ID Publish Year Pages File Format Full-Text
49856 46769 2012 5 PDF Available
Title
A novel method to prepare shape-selective catalysts by complexation–impregnation
Abstract

The MgO/MCM-22 catalysts were prepared by complexation–impregnation method and their shape-selective performances in the synthesis of para-dialkylbenzenes by alkylation of alkylbenzenes were investigated. Characterization results indicate that the dispersion of the Mg2 + complex is limited to the external surface of the zeolites during complexation–impregnation process, and this results in the nearly complete coverage of the external Brønsted acid sites. Consequently, the shape-selective catalysts prepared by complexation–impregnation method have improved shape-selectivity and maintain the high catalytic activity. Compared with the conventional method for preparation of shape-selective catalysts, the strategy developed here is simple and efficient.

Graphical abstractComplexation–impregnation limits a complex to the external surface of the zeolite, which effectively improves the para-selectivity without decreasing the catalytic activity.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Shape-selective catalyst MgO/MCM-22 is prepared by complexation–impregnation method. ► Coverage of external acid sites and protection of inner acid sites on zeolite are achieved. ► Improvement in shape-selectivity and high catalytic activity is obtained.

Keywords
Complexation–impregnation; Shape-selective catalysis; para-Dialkylbenzene; MgO/MCM-22
First Page Preview
A novel method to prepare shape-selective catalysts by complexation–impregnation
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: Catalysis Communications - Volume 29, 5 December 2012, Pages 153–157
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