中文摘要：

以氟化铵为矿化剂、四丙基溴化铵为模板剂,在负载晶种的钇稳定氧化锆（YSZ）中空纤维支撑体表面合成了MFI型分子筛膜,并用于乙醇/水的分离;系统考察了氟硅比（n_NH4F/n_SiO2）、合成时间等条件对膜分离性能的影响,在n_NH4F/n_SiO2为0.8、合成时间为8 h下合成出高性能膜,其通量达8.2 kg·m^-2·h^-1、乙醇/水分离因子为47;同时研究了MFI型分子筛膜在乙醇/水体系中的分离稳定性,揭示出该方法所合成膜表面无Si—OH,从而避免了Si—OH与乙醇反应而带来膜分离性能的下降。

英文摘要：

MFI zeolite membranes were synthesized on seeded yttria stabilized zirconia （YSZ） hollow fiber substrates by using ammonium fluoride as mineralizing agent and tetrapropylammonium bromide as template. The as-synthesized membranes were tested for separation of ethanol/water mixture. The influences of n_NH4F/n_Si02 ratio and synthesis time on separation performance were investigated. High-performance MFI zeolite membrane was synthesized at n_NH4V/n_Si02=0.8 and synthesis time of 8 h, which showed a permeation flux of 8.2 kg · m^-2 · h^-1 and ethanol/water separation factor of 47. The stability of MFI zeolite membranes in ethanol/water mixture was investigated. No Si--OH was detected on the surface of the as-synthesized MFI zeolite membranes, which could avoid decreased membrane separation performance by the reaction between Si--OH and ethanol.