大尺寸H-ZSM-5表面上MFI型沸石膜的合成  

The synthesis of MFI zeolite membrane on large H-ZSM-5 crystal

作　　者：刘成运[1] 刘靖[1] 谭涓[1] 杜文强[1] 吕连海[1] 

机构地区：[1]大连理工大学化工学院,辽宁大连116024

出　　处：《中国科技论文在线》2009年第9期655-658,共4页

摘　　要：利用原位水热法合成了大尺寸的H-ZSM-5,并在其表面上合成了MFI型沸石膜。采用X射线衍射,光学显微镜,扫描电镜和Uv-vis紫外漫反射等方法对合成的结果进行了表征。表征结果表明,在大尺寸H-ZSM-5表面上生长MFI型沸石膜的机理是多晶生长。在MFI型沸石膜的生长过程中,大尺寸H-ZSM-5的加入方式以及对大尺寸H.ZSM-5表面的预处理方式都会在很大程度上影响MFI型沸石膜在大尺寸H.-ZSM-5表面的生长结果。Using in-situ hydrothermal synthesis to prepare large H-ZSM-5 crystal and the MFI zeolite membrane was synthesized on it.The X-ray diffraction（XRD）,optical microscope,scanning electron microscope（SEM） and Uv-vis diffuse reflectance spectra were used to characterize the composite.From the characterization,it can be found that the mechanism of the growth of the MFI zeolite membrane on the large H-ZSM-5 crystal was polycrystalline growths.In the process of MFI zeolite membrane growing on the outer surface of the large H-ZSM-5 crystal,the adding methods and the pre-treatment of the large H-ZSM-5 crystal had dramatically influenced the synthesized effect.

关 键 词：分子筛催化剂 沸石膜 多晶生长 H-ZSM-5 

分 类 号：O643.36[理学—物理化学]