Alkali- and nitrate-free synthesis of highly active Mg-Al hydrotalcite-coated alumina for FAME production

Julia J. Creasey, Alessandro Chieregato, Jinesh C. Manayil, Christopher M.A. Parlett, Karen Wilson, Adam F. Lee

Research output: Contribution to journalArticle

Abstract

Mg-Al hydrotalcite coatings have been grown on alumina via a novel alkali- and nitrate-free impregnation route and subsequent calcination and hydrothermal treatment. The resulting Mg-HT/AlO catalysts significantly outperform conventional bulk hydrotalcites prepared via co-precipitation in the transesterification of C-C triglycerides for fatty acid methyl ester (FAME) production, with rate enhancements increasing with alkyl chain length. This promotion is attributed to improved accessibility of bulky triglycerides to active surface base sites over the higher area alumina support compared to conventional hydrotalcites wherein many active sites are confined within the micropores.
Original languageEnglish
Pages (from-to)861-870
Number of pages10
JournalCatalysis Science and Technology
Volume4
Issue number3
Early online date22 Jan 2014
DOIs
Publication statusPublished - 1 Mar 2014

Bibliographical note

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.

Funding: EPSRC (EP/G007594/3, a Leadership Fellowship and studentship); and the Royal Society for the award of an Industry Fellowship.

Electronic supplementary information: DOI 10.1039/c3cy00902e

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