Preparation and characterization of catalytic membranes containing sulfonated polyethersulfone for biodiesel production
Membranes made from sulfonated polyethersulfone (SPES) have been widely studied as ultrafiltration membranes, pervaporation membranes and proton exchange membranes for fuel cell; while there was little attempt to investigate catalytic performance of SPES for esterification. In the present paper, the catalytic performances of SPES membrane and its blends were tested by the esterification of the acidified oil with methanol for producing biodiesel. It was found that both SPES membrane and SPES/PES blend membrane as heterogeneous catalysts showed an excellent catalytic performance for esterification. Under optimum esterification conditions, the conversion of free fatty acid in the acidified oil (acid value is 153 mgKOH/g) achieved approximately 97% for both SPES and SPES/PES catalytic membranes. The excellent catalytic performance of these membranes resulted from the dense sulfonic groups on the PES chains. And the SPES/PES blend membrane exhibited better catalytic stability compared to the SPES membrane. Catalytic stability of SPES/PES samples with different degree of sulfonation (DS) were studied and the SPES/PES sample with DS=20.3% had the highest catalytic stability.
SHI Wenying HE Benqiao LI Jianxin DING Jincheng ZHU Mulan YAN Feng Liang Xiaoping
Key Lab of Hollow Fiber Membrane Material and Processes of Ministry of Education, School of Material Science and Engineering, Tianjin Polytechnical University, Tianjin 300160, P.R.China
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
999-1001
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）