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Phosphotungstic acid promoted zirconia–alumina mixed oxides: A stable and reusable catalysts for epoxidation of trans-stilbene

Paper ID Volume ID Publish Year Pages File Format Full-Text
51832 46855 2009 7 PDF Available
Title
Phosphotungstic acid promoted zirconia–alumina mixed oxides: A stable and reusable catalysts for epoxidation of trans-stilbene
Abstract

Zirconia–alumina mixed oxide supported phosphotungstic acid catalysts were synthesized and characterized by various techniques. The surface and bulk properties of the catalysts were examined by X-ray diffraction, BET surface area, ammonia-TPD, TPR, 31P MAS NMR and FTIR techniques. The prepared catalysts were evaluated for liquid phase epoxidation of trans-stilbene using tert-butylhydroperoxide as an oxidant. Among all the promoted catalyst, 25 wt.% phosphotungstic acid impregnated zirconia–alumina mixed oxide showed 46% conversion and 89% of selectivity towards trans-stilbene oxide formation.

Keywords
Zirconia–alumina; Phosphotungstic acid; Epoxidation; trans-Stilbene
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Phosphotungstic acid promoted zirconia–alumina mixed oxides: A stable and reusable catalysts for epoxidation of trans-stilbene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 11, Issue 1, 10 October 2009, Pages 51–57
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