Kinetics of DBU-catalyzed transesterification for biodiesel in the DBU-ethanol switchable-polarity solvent

被引：24

作者：

Xue, Dongling ^{[1
]}

Mu, Ying ^{[1
]}

Mao, Yu ^{[1
]}

Yang, Tiankui ^{[1
,2
]}

Xiu, Zhilong ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Life Sci & Biotechnol, Dalian 116024, Liaoning Provin, Peoples R China

[2] Wilmar Shanghai Biotechnol Res & Dev Ctr Co Ltd, Shanghai 200137, Peoples R China

来源：

GREEN CHEMISTRY | 2014年 / 16卷 / 06期

关键词：

SOYBEAN OIL; LIPASE;

D O I：

10.1039/c4gc00276h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The production of biodiesel from soybean oil and ethanol was investigated in switchable-polarity solvent (SPS) media of DBU and ethanol. The highest biodiesel yield catalyzed by DBU could reach 97.9% under optimized conditions, i.e. ethanol-oil molar ratio: 12 : 1, DBU-oil molar ratio: 2 : 1, reaction temperature: 70 degrees C, reaction time: 2 h. According to the kinetic analysis, the reaction order of oil was estimated to be 0.7, the apparent activation energy was 16.763 kJ mol(-1), the pre-exponential factor was 561.31 mol(0.3) mL(-0.3) min(-1) using the Arrhenius equation for the first time, which explains the high efficiency of the DBU catalyst. The DBU-catalyzed transesterification in the DBU-ethanol switchable-polarity solvent offered an interesting alternative, which would be used to simplify the transesterification and separation to a single step.

引用

页码：3218 / 3223

页数：6

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