Selection of Imidazolium-Based Ionic Liquids for Vitamin E Extraction from Deodorizer Distillate
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- 作者：Lei Qin ; Jianan Zhang ; Hongye Cheng ; Lifang Chen ; Zhiwen Qi ; Weikang Yuan
- 刊名：ACS Sustainable Chemistry & Engineering
- 出版年：2016
- 出版时间：February 1, 2016
- 年：2016
- 卷：4
- 期：2
- 页码：583-590
- 全文大小：464K
- ISSN：2168-0485
文摘
Deodorizer distillate as a byproduct of vegetable oil refining is an important source of natural vitamin E. Simple and green extraction can be employed to recover vitamin E from deodorizer distillate, and its performance strongly relies on the solvent used in the process. In order to screen an imidazolium-based ionic liquid (IL) as entrainer, a methodology integrating theoretical and experimental evaluations was applied. ILs composed of 47 types of anions were first investigated by COSMO-RS to figure out the most promising one, and the effect of the alkyl chain on the imidazolium ring was addressed by experiments. The IL [C6MIm]Ac was finally determined as the most promising solvent with the selectivity of 108.23 and the partition coefficient of 8.182 for α-tocopherol. The liquid–liquid equilibrium data and the extraction result for corn oil deodorizer distillate indicate its superior performance for the extraction process dealing with a low concentration of vitamin E.