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Heteropoly acid supported modified Montmorillonite clay: An effective catalyst for the esterification of acetic acid with sec-butanol

Paper ID Volume ID Publish Year Pages File Format Full-Text
42199 45914 2010 6 PDF Available
Title
Heteropoly acid supported modified Montmorillonite clay: An effective catalyst for the esterification of acetic acid with sec-butanol
Abstract

Esterifications of acetic acid with sec-butanol catalysed by supported dodecatungstophosphoric acid, H3PW12O40 (DTP) on acid modified Montmorillonite clay (AT-Mont) matrix have been carried out. A series of catalysts having 5%, 10%, 20% and 30% loading of DTP on different AT-Mont (15 min to 4 h) were synthesized and evaluated as catalysts; 20% DTP loaded on acid activated (15 min) clay showed the highest catalytic activity with about 80% conversion, having nearly 100% selectivity towards sec-butyl acetate. The high catalytic activity may be due to a high dispersion of the DTP on AT-Mont, providing more surface area (120 m2/g) and active sites than pure HPA. The variation of different reaction parameters, such as reaction temperature, reaction time, mole ratio of acid and alcohol and catalyst amount, on the conversion of acetic acid were studied. The samples were characterized by surface area, cation exchange capacity (CEC) measurements, TGA-DTA and FTIR spectroscopy.

Graphical abstractDodecatungstophosphoric acid, H3PW12O40·6H2O (DTP), supported on acid modified Montmorillonite clay (AT-Mont) matrix, is an efficient solid acid catalyst for the esterification of acetic acid with sec-butanol. Among different catalysts, the 20% loading of DTP on AT-Mont (15 min) shows the highest efficacy with about 80% conversion, having nearly 100% selectivity towards sec-butyl acetate.Figure optionsDownload full-size imageDownload high-quality image (162 K)Download as PowerPoint slide

Keywords
Montmorillonite clay; Heteropoly acid; Dodecatungstophosphoric acid; Catalyst; Esterification; Cation exchange capacity
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Heteropoly acid supported modified Montmorillonite clay: An effective catalyst for the esterification of acetic acid with sec-butanol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 378, Issue 2, 30 April 2010, Pages 221–226
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