New Crystallization of Fatty Acids from Aqueous Ethanol Solution Combined with Liquid−Liquid Extraction
New Crystallization of Fatty Acids from Aqueous Ethanol Solution Combined with Liquid−Liquid Extraction
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结合液液萃取从乙醇水溶液中结晶脂肪酸的新方法
DOI：
10.1021/ie980715z
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发表时间：
1999
影响因子：
4.2
通讯作者：
S. Hirota
中科院分区：
文献类型：
--
作者：
K. Maeda;Yoshihisa Nomura;K. Tai;Yoshitaka Ueno;K. Fukui;S. Hirota
研究了一种从乙醇水溶液中结晶分离饱和脂肪酸（月桂酸-肉豆蔻酸）的新方法。在该分离过程中有两个容器：萃取容器和结晶容器。水相中的脂肪酸首先在萃取容器中从其有机相（熔体）中萃取。将水相中的脂肪酸连续引入结晶容器，然后在那里使脂肪酸结晶。在结晶容器中的水相上方连续收集脂肪酸晶体。在该方法中，测量晶体的产率和纯度随时间的变化，发现月桂酸的纯度随着低产率范围的产率的增加而不稳定地增加至高达0.98摩尔分数的月桂酸。乙醇在水相中的摩尔分数对控制产率和产品纯度之间的关系有重要意义。
A new separation process of saturated fatty acids (lauric acid−myristic acid) using crystallization from an aqueous ethanol solution has been examined. There were two vessels in this separation process: an extraction vessel and a crystallization vessel. The fatty acids in the aqueous phase were first extracted from their organic phase (melt) in the extraction vessel. The fatty acids in the aqueous phase were continuously introduced to the crystallization vessel, and then the fatty acids were crystallized there. The crystals of the fatty acids were collected continuously above the aqueous phase in the crystallization vessel. In this process, the yield and the purity of the crystals over time were measured, and it was found that the purity of lauric acid increased unsteadily up to 0.98 mole fraction of lauric acid with an increase in the yield of the low yield range. The mole fraction of ethanol in the aqueous phase could be significant to control the relationship between the yield and the purity of the cr...