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Preparation and catalytic performance of quaternized alkalinealkalization polysulfone membrane for transesterification reaction
Authors: Shi Wenying,Li Hongbin,Sun Maowen,Qin Longwei
Units: (1. School of Textiles Engineering, Henan University of Engineering, Zhengzhou 450007,China) (2.Henan Engineering Laboratory of New Textiles Development, Henan University of Engineering, Zhengzhou, Henan, 450007,China)
KeyWords: biodiesel, polysulfone, alkalization membrane, quaternized, transesterification
ClassificationCode:TQ645
year,volume(issue):pagination: 2018,38(2):80-85

Abstract:
 In this work, A a quaternized alkalinealkalization polysulfone (PSF) membrane frompolysulfone (PSF) as the substrateused for catalysis of transesterification reaction was developed prepared by successive processes of alkylation, quaternary amination and alkylation of PSF. The grafting of polysulfone was characterized by Infrared Spectroscopy. The quaternized alkalization polysulfone membrane was used to catalyze the transesterification of soybean oil for biodiesel. The effects of water content, the kinds of co-solvents, the amount of co-solvent and the molar ratio of methanol/soybean oil on the conversion of transesterification were studied and optimized. The experimental results showed that the conversion of soybean oil reached the maximum value of 95.2% under the reaction condition: the molar ratio of methanol/soybean oil of 9:1, the amount of alkaline polysulfone membrane of 2wt% (weight of soybean oil) , the reaction time of 1h, the amount of n-hexane of 50wt% (weight of soybean oil) and the reaction temperature of 65℃. When the water content of soybean oilwas below 5 wt%, the quaternized alkalization polysulfone membrane could absorb the water in soybean oil, and the water had few effectson the transesterification reaction. After the reuse of the quaternized alkalization polysulfone membrane for 5 times, transesterification conversion did not decrease significantly.

Funds:
国家自然基金资助项目“基于生物柴油制备的磺化聚合物复合催化膜研制及膜接触器动力学研究”(51403052)和国家留学基金资助(201708410343)

AuthorIntro:
第一作者简介:石文英(1984-),女(汉),山西大同市人,博士,副教授。研究方向:催化膜及膜反应器。电话:0371-67718851。E-mail:shiwenyinggg@126.com。

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