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

doi:10.1039/c3cy00902e

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 journal › Article › peer-review

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/Al₂O₃ catalysts significantly outperform conventional bulk hydrotalcites prepared via co-precipitation in the transesterification of C₄-C₁₈ 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 language	English
Pages (from-to)	861-870
Number of pages	10
Journal	Catalysis Science and Technology
Volume	4
Issue number	3
DOIs	https://doi.org/10.1039/c3cy00902e
Publication status	Published - 1 Mar 2014

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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/Al2O3 catalysts significantly outperform conventional bulk hydrotalcites prepared via co-precipitation in the transesterification of C4-C18 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.",

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AU - Creasey, Julia J.

AU - Chieregato, Alessandro

AU - Manayil, Jinesh C.

AU - Parlett, Christopher M.A.

AU - Wilson, Karen

AU - Lee, Adam F.

PY - 2014/3/1

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AB - 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/Al2O3 catalysts significantly outperform conventional bulk hydrotalcites prepared via co-precipitation in the transesterification of C4-C18 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.

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ER -

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

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