New process for catalyst-free biodiesel production using subcritical acetic acid and supercritical methanol

FUEL

卷:89

Article

Saka, Shiro¹  Isayama, Yohei¹  Ilham, Zul¹  Xin Jiayu¹ 

[1] Kyoto Univ, Grad Sch Energy Sci, Dept Socioenvironm Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

关键词: Biodiesel;    Supercritical process;    Acetic acid;    Triacetin;    Catalyst-free process;   

DOI  :  10.1016/j.fuel.2009.10.018

来源: Elsevier

【 摘 要 】

The production of glycerol as a by-product is unavoidable in the current conventional biodiesel manufacturing processes. Since biodiesel production is expected to increase in the near future, effective utilization of glycerol will become an issue of interest. In this study, therefore, a process consisting of subcritical acetic acid treatment to convert rapeseed oil to fatty acids and triacetin followed by conversion of the obtained fatty acids to their fatty acid methyl esters in supercritical methanol treatment was investigated. The obtained results clearly revealed that this two-step reaction could proceed effectively at a high reaction rate, and that fatty acid methyl esters and triacetin could be obtained under milder reaction condition than the one-step process utilizing supercritical methyl acetate and supercritical methanol. (C) 2009 Elsevier Ltd. All rights reserved.

【 授权许可】

Free