Oil transesterification over calcium oxides modified with lanthanum

被引：210

作者：

Yan, Shuli ^{[1
]}

Kim, Manhoe ^{[1
]}

Salley, Steven O. ^{[1
]}

Ng, K. Y. Simon ^{[1
]}

机构：

[1] Wayne State Univ, Dept Chem Engn & Mat Sci, Detroit, MI 48202 USA

来源：

APPLIED CATALYSIS A-GENERAL | 2009年 / 360卷 / 02期

关键词：

Biodiesel; Unrefined and waste oils; Transesterification; Solid base catalyst; SOYBEAN OIL; SOL-GEL; BIODIESEL; CATALYSTS; CAO; ESTERIFICATION; ESTERS; METHYL;

D O I：

10.1016/j.apcata.2009.03.015

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：

Investigations were conducted on a series of calcium and lanthanum oxides catalyst for biodiesel production. Mixed oxides catalyst showed a superior transesterification activity over pure calcium or pure lanthanum oxide catalysts. The catalyst activity was correlated with surface basicity and specific surface areas. The effects of water and free fatty acids (FFA) levels in oil feedstock, water and CO2 in air, mass ratio of catalyst, molar ratio of oil to methanol, and reaction temperature on fatty acid methyl ester (FAME) yield were investigated. Under optimal conditions, FAME yields reached 94.3% within 60 min at 58 degrees C. Mixed CaO-La2O3 catalyst showed a high tolerance to water and FFA, and could be used for converting pure or diluted unrefined/waste oils to biodiesel. Published by Elsevier B.V.

引用

页码：163 / 170

页数：8

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