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Study on reuse of metal oxide-promoted sulphated zirconia in acylation reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
48167 46496 2008 9 PDF Available
Title
Study on reuse of metal oxide-promoted sulphated zirconia in acylation reactions
Abstract

A series of sulphated zirconia samples (SZ) promoted with Al2O3, Ga2O3, and Fe2O3 were synthesized by co-precipitation at constant pH and aged under reflux conditions. Structural, surface and catalytic properties of the samples were investigated using N2 adsorption/desorption, thermal analysis, in-situ FTIR spectroscopy, TPR–MS and EGA–MS measurements. The catalytic performance of promoted SZ in anisole acylation has been investigated. Promotion by either Fe2O3 or Ga2O3 was found to increase the catalytic activity (yield) after recycle of catalysts with respect un-promoted sample, whereas promotion by Al2O3 was observed to increase the conversion but not the yield. It is worth noting that all systems present high selectivity to the p-metoxyacetophenone product.

Keywords
Sulphated zirconia; Friedel-Crafts acylation; Fine chemicals; Catalyst regeneration
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Study on reuse of metal oxide-promoted sulphated zirconia in acylation reactions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 84, Issues 3–4, 1 December 2008, Pages 363–371
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
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