流动体系中NaA分子筛膜的制备及渗透汽化分离性能研究  

Preparation of NaA zeolite membranes in flowing system and the study of their PV separation performance

作　　者：张小明[1,2] 吕高孟[1,2] 雷骞[1,2] 索继栓[1] 

机构地区：[1]中国科学院成都有机化学研究所,成都610041 [2]中国科学院嘉兴绿色化学工程中心,嘉兴314006

出　　处：《膜科学与技术》2010年第1期50-53,59,共5页Membrane Science and Technology

基　　金：中国科学院"西部之光"人才培养计划(无编号);浙江省面上科研项目(2008C21164);嘉兴市科技计划支持(SB2007AZ2005)

摘　　要：以液体硅酸钠、铝酸钠和氢氧化钠为原料,在一种流动体系中制备了工业应用规格的NaA分子筛膜,用XRD和SEM对分子筛膜的晶相结构和表面形貌进行了表征,所制备的NaA分子筛膜具有优良的渗透汽化分离性能.这种流动体系中制备分子筛膜的新方法从根本上避免分子筛合成过程中的浓度梯度问题,有利于制备均匀、连续、致密、分离性能优异的分子筛膜,特别适合于制备工业应用规模的分子筛膜.A NaA zeolite membrane with commercial length was prepared in flowing system using water glass, sodium aluminate and sodium hydroxide as the raw materials. The crystal structures and the surface images of the NaA zeolite membrane were characterized by XRD and SEM. The NaA zeolite membrane exhibited excellent PV performance for the dehydration of various organic solvents. The preparation of NaA zeolite membranes in flowing system can effectively avoid the concentration gradient in the conventional processes, and it is suitable for producing uniform, continuous and high quality zeolite membrane in industrial scale.

关 键 词：NAA分子筛膜 流动体系 渗透汽化 膜分离 

分 类 号：TQ028.8[化学工程]