CAJ | 학술논문

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(nNH4F/nSiO2)、合成时间等条件对膜分离性能的影响，在nNH4F/nSiO2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。
이불화안위광화제、사병기추화안위모판제，재부재정충적을은정양화고（YSZ）중공섬유지탱체표면합성료 MFI 형분자사막,병용우을순/수적분리；계통고찰료불규비(nNH4F/nSiO2)、합성시간등조건대막분리성능적영향，재nNH4F/nSiO2위0.8、합성시간위8 h하합성출고성능막，기통량체8.2 kg·m?2·h?1、을순/수분리인자위47；동시연구료MFI형분자사막재을순/수체계중적분리은정성，게시출해방법소합성막표면무Si—OH，종이피면료Si—OH여을순반응이대래막분리성능적하강。
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 ofnNH4F/nSiO2 ratio and synthesis time on separation performance were investigated. High-performance MFI zeolite membrane was synthesized atnNH4F/nSiO2=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.