Table of Contents
Journal of Catalysts
Volume 2013, Article ID 828962, 8 pages
http://dx.doi.org/10.1155/2013/828962
Research Article

-Butane Isomerization over Silica-Supported Heteropolyacids: Study of Some Parameters

Université de Lyon, Institut de Chimie de Lyon, UMR C2P2, LCOMS, Bâtiment CPE Curien, 43 Boulevard du 11 Novembre 1918, 69616 Villeurbanne, France

Received 24 January 2013; Accepted 22 April 2013

Academic Editor: Mohammed M. Bettahar

Copyright © 2013 Eva Grinenval et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Isomerization of -butane was studied on silica-supported heteropolyacids. The activity depends strongly on the solvent used for the preparation and on the polyoxometalate loading. This behavior was explained by different proportions of isolated and bulk heteropolyacids. Silicotungstic acid is inherently more selective than phosphotungstic acid. In presence of platinum and hydrogen the catalysts are stable and highly selective (more than 97%) to isobutane. A study as a function of temperature shows that there is an optimal temperature for performing the reaction.