物理化学学报2011，Vol.27Issue(10)：2493-2498,6.
二次生长法制备高分离性能的PHI分子筛膜
Preparation of PHI Zeolite Membrane with High Separation Performance by the Secondary Growth Method
摘要
Abstract
PHI zeolite membrane was prepared by the secondary growth method on the surface of a porous CT-AI2O3 disk support. The effects of the zeolite seed preparation method, secondary growth time, and temperature on membrane synthesis were investigated. The as-synthesized PHI zeolite membranes were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD results show that PHI zeolite emerges on the support. The SEM results show that the support surface is fully covered by uniform and compact PHI zeolite membrane synthesized by the secondary growth method and the thicknesses of the membrane layer was found to be about 20 μm. The as-synthesized PHI zeolite membranes were used for dehydration of methanol (MeOH), ethanol (EtOH), isopropanol (IPA), and tert-butanol (TBA) solutions with different kinetic diameters. The influence of feed concentration on the separation performance was investigated by pervaporation tests. The results show that the PHI membranes exhibited excellent performance of the dehydration of alcohol/water mixtures. It was found that the flux and the separation factors of isopropanol and terf-butanol increased with the increment of the water amount in the feed and the separation factors of methanol and ethanol decreased slightly.关键词
PHI分子筛膜/二次生长法/渗透汽化/分离因子Key words
PHI zeolite membrane/ Secondary growth method/ Pervaporation/ Separation factor分类
化学化工引用本文复制引用
袁文辉,常然然,刘晓晨,李莉..二次生长法制备高分离性能的PHI分子筛膜[J].物理化学学报,2011,27(10):2493-2498,6.基金项目
国家自然科学基金(20976057)和国家自然科学基金-广东联合基金(U0834004)资助项目 （20976057）
