化工进展2016，Vol.35Issue(9)：2885-2891,7.DOI:10.16085/j.issn.1000-6613.2016.09.033
二次水热合成法制备ZSM-5分子筛膜及其渗透汽化性能
Secondary hydrothermal synthesis of ZSM-5 zeolite membrane and its pervaporation performance
摘要
Abstract
The high acid-proof ZSM-5 zeolite membranes are prepared on tubular porous mullite supports by secondary hydrothermal synthesis,and the effects of seed crystals,H2O/SiO2 molar ratio of the precursor synthesis gel on the growth and pervaporation performance of ZSM-5 zeolite membranes are studied systematically. The structure,morphology,and Si/Al ratio of the ZSM-5 zeolite crystals and membranes are characterized by XRD,FE-SEM,and EDX. For the separation of 90% HAc/H2O mixture at 75℃,the flux and separation factor (H2O over HAc) of ZSM-5 zeolite membrane prepared with the optimum synthesis condition has a well dehydration performance,and the total flux and separation factor are 0.98kg/(m2·h) and 890,respectively. Besides,the prepared ZSM-5 zeolite membranes show good reproducibility,and the average flux and separation factor of the 12 pieces of ZSM-5 zeolite membranes are(0.85±0.15)kg/(m2·h) and 650±290 for dehydration of 90% HAc/H2O mixture at 75℃. Moreover,the ZSM-5 zeolite membrane presents excellent dehydration performance for 50%~95% HAc/H2O at 45~75℃.关键词
耐酸性ZSM-5分子筛膜/晶种/H2O/SiO2比率/渗透汽化/重复性Key words
acid-stable ZSM-5 zeolite membrane/seed crystals/H2O/SiO2 ratio/pervaporation/reproducibility分类
化学化工引用本文复制引用
朱美华,夏水莲,刘永生,袁晓蕾,李羚,桂田,张飞,刘鑫,陈祥树..二次水热合成法制备ZSM-5分子筛膜及其渗透汽化性能[J].化工进展,2016,35(9):2885-2891,7.基金项目
国家自然科学基金面上项目（21476099）、国家国际科技合作专项（2015DFA50190）、国家自然科学基金青年基金（21503100）、江西省教育厅科学技术研究项目（14240）及江西省科技厅对外合作科技项目（20141BDH80011）。 （）
