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Heteropoly tungstate supported on tin oxide catalysts for liquid phase benzylation of anisole with benzyl alcohol

Paper ID Volume ID Publish Year Pages File Format Full-Text
41941 45905 2010 6 PDF Available
Title
Heteropoly tungstate supported on tin oxide catalysts for liquid phase benzylation of anisole with benzyl alcohol
Abstract

A series of 12-tungstophosphoric acid supported on tin oxide catalysts were prepared and characterized by FT-Infra red, X-ray diffraction, Laser Raman spectroscopy and temperature programmed desorption of ammonia. The characterization results suggest the presence of Keggin ions and the generation of strong acidic sites on the support. The catalysts were evaluated for benzylation of anisole with benzyl alcohol as benzylating agent. The benzylation activity depends on the content of TPA on tin oxide; the catalyst with 15 wt% loading of tungstophosphoric acid showed highest activity. The structural and surface modifications and their influence on benzylation activities were studied by treating the catalysts at different calcination temperatures. The benzylation activity varied with the change in stability of the Keggin ion structure, which depended upon treatment conditions. The alcohol conversion and selectivity were also dependent on the anisole-to-benzyl alcohol ratio, reaction temperature, reaction time and catalyst weight.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (132 K)Download as PowerPoint slideResearch highlights▶ Tin oxide supported heteropoly tungstates are efficient catalysts for benzylation. ▶ The acidity of the catalysts varies with the amount of heteropoly tungstate. ▶ The catalysts activity related to surface and structural characteristics. ▶ The structural and surface modifications depend on the calcination temperatures.

Keywords
Tungstophosphoric acid; Tin oxide; Benzylation; Anisole; Benzyl alcohol
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Heteropoly tungstate supported on tin oxide catalysts for liquid phase benzylation of anisole with benzyl alcohol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 384, Issues 1–2, 20 August 2010, Pages 101–106
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