Highly efficient Bronsted acidic ionic liquid-based catalysts for biodiesel synthesis from vegetable oils

被引：81

作者：

Ghiaci, M. ^{[1
]}

Aghabarari, B. ^{[1
]}

Habibollahi, S. ^{[2
]}

Gil, A. ^{[3
]}

机构：

[1] Isfahan Univ Technol, Dept Chem, Esfahan 8415683111, Iran

[2] Payame Noor Univ, Esfahan, Iran

[3] Univ Publ Navarra, Dept Appl Chem, E-31006 Pamplona, Spain

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 02期

关键词：

Biodiesel; Vegetable oil; Transesterification; Ionic liquid; Acid catalyst; FREE FATTY-ACIDS; ESTERIFICATION; ESTERS; TRANSESTERIFICATION; CHAIN;

D O I：

10.1016/j.biortech.2010.09.095

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Biodiesel has been produced by transesterification of canola oil with methanol in the presence of highly Bronsted acidic ionic liquids based on 1-benzyl-1H-benzimidazole, and the effect of reaction temperature, type and amount of catalyst, molar ratio and reaction time investigated. The results show that the 4B ionic liquid has the highest catalytic activity and best recyclability under the optimised reaction conditions. Thus, this ionic liquid is able to catalyze the transesterification of canola oil to its methyl esters in 5 h with yields of more than 95%. Density functional calculations (B3LYP), using the 6-311G basis set, have been performed to have a better understanding on the reactivity of these catalysts. The catalytic activity of 4B for the transesterification of other vegetable oils and alcohols has also been studied. (C) 2010 Elsevier Ltd. All rights reserved.

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页码：1200 / 1204

页数：5

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