新型炭支撑体上无模板剂制备高硅ZSM-5沸石膜  

Preparation of Template-free ZSM-5 Zeolite Membranes on Tubular Carbon Supports

作　　者：邹本雪[1] 司波[1] 张雄福[2] 

机构地区：[1]辽东学院材料科学与化学工学院,辽宁丹东118001 [2]大连理工大学化工学院,辽宁大连116000

出　　处：《辽东学院学报（自然科学版）》2007年第3期161-165,共5页Journal of Eastern Liaoning University:Natural Science Edition

摘　　要：在炭支撑体上预先涂敷silicalite-1晶种,经二次水热合成法成功地制备了无模板剂的高硅ZSM-5沸石复合膜,经XRD、SEM和渗透性能测试,合成的炭基-沸石复合膜连续、致密,显示出一定的分子选择性能。实验中对合成液中钠硅比,水硅比和硅铝比等因素对沸石复合膜性能的影响进行了初步探讨。结果表明,尽管晶种的存在削弱了Na+的结构导向作用,但是Na+和Al3+的作用不能忽视。炭支撑体上晶种的存在促进了沸石膜的生长,对沸石膜的形成起着重要的作用。Template-free ZSM-5 zeolite membranes with high Si/Al ratio have been successfully synthesized on the carbon tubes by seeded secondary synthesis.Their properties were characterized by XRD,SEM,single gas permeance tests.The results indicate that the membrane is dense,free-defected with good molecule selecting property.Ratios of Na/Si,water/Si and Si/Al which affected the quality of zeolite membrane were also systematically examined.The results show that seeds and Al3+ ion play an important role in the growth...

关 键 词：沸石 模板剂 ZSM-5沸石膜 多孔炭 无机膜 

分 类 号：TB381[一般工业技术—材料科学与工程]