Solubility Measurement for the Reaction Systems in Pre-Esterification of High Acid Value Jatropha curcas L. Oil

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• 作者：Yingying Liu ; Houfang Lu ; Changjun Liu ; Bin Liang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2009
• 出版时间：May 14, 2009
• 年：2009
• 卷：54
• 期：5
• 页码：1421-1425
• 全文大小：248K
• 年卷期：v.54,no.5(May 14, 2009)
• ISSN：1520-5134

文摘

Crude Jatropha curcas L. oil (Oil) normally contains some free fatty acids (FFAs), and it must be pre-esterified with methanol before it is used as the feedstock of the transesterification operation in biodiesel production. The mutual solubility of the pre-esterification reaction mixture was measured over the reaction temperature range from (303.1 to 333.1) K. The phase diagrams included the ternary diagrams of FFA + oil + methanol, FFA + methanol + water, Jatropha curcas L. oil methyl ester (FAME) + methanol + water, and FAME + methanol + oil. The data show that the mutual solubility increases with temperature. High FFA content can increase the mutual solubility of methanol and oil. The products, namely, water and FAME, change the distribution of oil and methanol.