文献类型：期刊文献

英文题名：Fast surface crosslinking ceramic hollow fiber pervaporation composite membrane with outstanding separation performance for isopropanol dehydration

作者：Zhang, Xin[1];Li, Meng-Ping[1];Huang, Zhi-Hao[1];Zhang, Hao[1];Liu, Wei-Liang[1];Xu, Xin-Ru[1];Ma, Xiao-Hua[1];Xu, Zhen-Liang[1]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, Membrane Sci & Engn R&D Lab, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2020

卷号：234

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20193907477077);WOS:【SCI-EXPANDED(收录号:WOS:000491627200042)】；

基金：The authors gratefully acknowledge the research funding provided by Hong Kong Scholars Program (No. XJ2015015), National Natural Science Foundation of China (21176067 and 21406060), Fundamental Research Funds for the Central Universities (WA1514305) and China Postdoctoral Science Foundation (2016M601527).

语种：英文

外文关键词：Fast surface crosslinking; Hollow fiber composite membrane; lsopropanol dehydration; Arrhenius equation; Solution-diffusion model

摘要：A facile fast surface crosslinking method was adopted to fabricate ceramic hollow fiber composite membranes with a thin separation layer for outstanding pervaporation (PV) performance. The morphologies, surface chemical compositions and hydrophilicity of the chitosan (CS)/ceramic hollow fiber composite membranes were characterized by field emission scanning electron microscopy (SEM), X-ray photoelectron analysis (XPS), and water contact angle (CA), respectively. The influences of CS concentration, feed composition and temperature on the membrane performances were investigated systematically. The operation time of the surface crosslinking process was several minutes (i.e., 4 min). The thickness of the separation layer of the obtained composite membranes ranged from 322 to 1414 nm, exhibiting excellent separation performance. The Arrhenius active energy (E-J and E-D) and the diffusion coefficient (D-w and D-IPA) were calculated to theoretically analyze the membrane separation process. The highest PV separation index (PSI) value was 8.2 x 10(6), indicating that the obtained membranes possessed enormous potential in IPA dehydration.