Optimization of supercritical dimethyl carbonate method for biodiesel production

FUEL

卷:97

Article

Ilham, Zul¹  Saka, Shiro¹ 

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

关键词: Biodiesel;    Optimization;    Dimethyl carbonate;    Non-catalytic;    Supercritical process;   

DOI  :  10.1016/j.fuel.2012.02.066

来源: Elsevier

【 摘 要 】

Biodiesel could be produced from triglycerides and dimethyl carbonate, instead of the conventional methanol, in this non-catalytic supercritical dimethyl carbonate method. It was demonstrated that, supercritical dimethyl carbonate method successfully converted triglycerides as well as fatty acids to fatty acid methyl esters (FAME) with glycerol carbonate, a higher value by-product compared to the conventional glycerol. The FAME are high in yield, comparable with supercritical methanol method, and satisfy the international standard for use as biodiesel fuel. In this study, therefore, optimization of supercritical dimethyl carbonate method was discussed to include all important key parameters such as reaction temperature, pressure, time, molar ratio of dimethyl carbonate to oil, the FAME yield, thermal decomposition, degree of denaturation, tocopherol content, oxidation stability and fuel properties. The optimum condition for supercritical dimethyl carbonate method was determined at 300 degrees C/20 MPa/20 min/42:1 molar ratio of dimethyl carbonate to oil to have satisfactory yield of FAME at 97.4 wt%. Conclusively, this study showed the importance to address all those key parameters in order to produce high quality biodiesel from supercritical dimethyl carbonate method. (C) 2012 Elsevier Ltd. All rights reserved.

【 授权许可】

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