Esterification of Free Fatty Acids in Crude Palm Oil Using Sulfated Cobalt-Tin Mixed Oxide Catalysts

被引：3
|
作者：
Nuithitikul, Kamchai [1 ]
Hasin, Worrapat [2 ]
机构：
[1] Walailak Univ, Dept Chem & Proc Engn, Sch Engn & Resources, Nakhonsithammarat 80161, Thailand
[2] King Mongkuts Univ Technol North Bangkok, Dept Chem Engn, Bangkok 10800, Thailand
来源：
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING | 2014年 / 12卷 / 01期
关键词：
sulfated cobalt-tin mixed oxide; biodiesel; esterification; free fatty acid; crude palm oil; EFFICIENT CATALYST; N-HEPTANE; BIODIESEL;
D O I：
10.1515/ijcre-2013-0146
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this study, sulfated tin oxide was modified with cobalt oxide resulting in sulfated cobalt-tin mixed oxide (SO42-/Co2O3-SnO2). For the first time, the catalytic activity of SO42-/Co2O3-SnO2 for the esterification reaction of free fatty acids (FFA) in crude palm oil to produce methyl esters has been investigated. The effects of amount of Co and calcination temperature were studied. The properties of SO42-/Co2O3-SnO2 were determined with N-2 adsorption, X-ray diffraction and X-ray fluorescence analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis and potentiometric titration. The esterification was carried out in a stirred-tank reactor equipped with a reflux condenser. The reaction conditions (methanol/oil ratio, catalyst size, catalyst loading and reaction time) were optimized. The results confirm that SO42-/Co2O3-SnO2 is a promising catalyst in the production of methyl esters from FFA in crude palm oil. The addition of Co improved the reusability of sulfated tin oxide.
引用
收藏
页码：513 / 524
页数：12
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