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

被引：39

作者：

Creasey, Julia J. ^{[1
]}

Chieregato, Alessandro ^{[2
]}

Manayil, Jinesh C. ^{[3
]}

Parlett, Christopher M. A. ^{[1
]}

Wilson, Karen ^{[3
]}

Lee, Adam F. ^{[1
,4
]}

机构：

[1] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England

[2] Cardiff Univ, Cardiff Catalysis Inst, Sch Chem, Cardiff CF10 3AX, S Glam, Wales

[3] Aston Univ, European Bioenergy Res Inst, Birmingham B4 7ET, W Midlands, England

[4] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2014年 / 4卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

LAYERED DOUBLE HYDROXIDES; TRIGLYCERIDE TRANSESTERIFICATION; BIODIESEL PRODUCTION; GAMMA-ALUMINA; CATALYSTS; SURFACE; PRECIPITATION; IMPREGNATION; TRIBUTYRIN; SUPPORT;

D O I：

10.1039/c3cy00902e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 C-4-C-18 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.

引用

页码：861 / 870

页数：10

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