文献类型：期刊文献

英文题名：High-performance polyamide/ceramic hollow fiber TFC membranes with TiO2 interlayer for pervaporation dehydration of isopropanol solution

作者：Liu, Xi-Wang[1];Cao, Yue[1];Li, Yu-Xuan[1];Xu, Zhen-Liang[1];Li, Ze[1];Wang, Ming[1];Ma, Xiao-Hua[1]

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

年份：2019

卷号：576

起止页码：26

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20190406422909);WOS:【SCI-EXPANDED(收录号:WOS:000457975100004)】；

基金：The authors gratefully acknowledge the financial support received from National Natural Science Foundation of China (20076009, 21176067, 21276075 and 21406060), and the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-14C03).

语种：英文

外文关键词：TiO2 interlayer; Thin film composite; Interfacial polymerization; Pervaporation; Isopropanol

摘要：To improve the pervaporation (PV) performance of isopropanol (IPA) dehydration, polyamide (PA) thin-film composite (TFC) membranes were fabricated by interfacial polymerization (IP) of 1,3-diaminopropane (DAPE) and trimesoyl chloride (TMC) on the surface of TiO2 modified ceramic hollow fiber (CHF) substrate. The TiO2 interlayer prepared by the sol-gel method completely cover the rough and macroporous surface of the alpha-Al2O3 hollow fiber, providing relatively smooth and intact surface but also abundant electrostatic sites (hydroxyl) for better IP. The PA layer prepared on the TiO2 interlayer is thinner, defect-free and exhibited higher smoothness and cross-linking degree than that on the original CHF support. The effects of monomer concentration, immersion time in aqueous phase and contact time of TMC solution were also investigated. The TFC membrane prepared under optimum conditions exhibited the outstanding PV separation index (PSI) value of 7.83 x 10(7) with separation factor above 12,000 and the permeate flux nearly 6.44 kg/m(2) h for PV dehydration of 90 wt% IPA at 60 degrees C. After 100 h of long-term operation, the PV membrane maintains the high separation performance. This TFC membrane prepared by an effective and simple method provides an alternative for designing high-performance PV membrane in organics dehydration.