Preparation of biodiesel from soybean oil using supercritical methanol and CO2 as co-solvent
Preparation of biodiesel from soybean oil using supercritical methanol and CO2 as co-solvent
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DOI：
10.1016/j.procbio.2005.03.014
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发表时间：
2005-09-01
影响因子：
4.4
通讯作者：
Zhang, JC
中科院分区：
文献类型：
--
作者：
Han, HW;Cao, WL;Zhang, JC
以超临界甲醇为溶剂，在无催化剂的条件下进行了大豆油的酯交换反应。在反应混合物中加入助溶剂，以降低操作温度、压力和醇油摩尔比。在反应体系中使用二氧化碳作为助溶剂，大大降低了超临界反应所需条件的严重度。结果表明，在反应温度为280℃、醇油比为24、CO2与甲醇的摩尔比为0.1、反应压力为14.3 Mpa、反应时间为10min的条件下，生物柴油甲酯的产率可达98%，为超临界甲醇生产生物柴油提供了可行的工艺条件。此外，生产过程是环保的。(C)2005爱思唯尔有限公司。保留所有权利。
Transesterification of soybean oil in supercritical methanol has been carried out in the absence of catalyst. A co-solvent was added to the reaction mixture in order to decrease the operating temperature, pressure and molar ratio of alcohol to vegetable oil. With CO2 as co-solvent in the reaction system, there was a significant decrease in the severity of the conditions required for supercritical reaction. It was demonstrated that, with an optimal reaction temperature of 280 degrees C, methanol to oil ratio of 24 and CO2 to methanol ratio of 0.1, a 98% yield of methyl esters (biodiesel) was observed in 10 min at a reaction pressure of 14.3 MPa, which makes the production of biodiesel using supercritical methanol viable as an industrial process. Furthermore, the production process is environmentally friendly. (c) 2005 Elsevier Ltd. All rights reserved.