MFI型分子膜的制备与H_2S/CH_4分离性能  

Preparation and H_2S/CH_4 separation performance of MFI type zeolite membrane

作　　者：杨文申[1] 郎林[1] 阴秀丽[1] 吴创之[1] YANGWen-shen;LANGLin;YIN Xiu-li;WU Chuang-zhi(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,CAS Key Laboratory of Renewable Energy,Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China)

机构地区：[1]中国科学院广州能源研究所中国科学院可再生能源重点实验室广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640

出　　处：《燃料化学学报》2018年第7期891-896,共6页Journal of Fuel Chemistry and Technology

基　　金：国家重点研发计划(2016YFE0203300);广东省自然科学基金(2017B030308002);广州市科技计划项目(201707010242)资助~~

摘　　要：采用二次生长法在多孔α-Al_2O_3载体上制备MFI型(ZSM-5和silicate-1)分子筛膜;通过XRD和SEM检测,证明所合成的分子筛膜为致密、交联和无取向的MFI型分子筛膜,厚度为5μm;单组分气体渗透实验检测中,所制备样品膜的N2渗透量均小于10^(-11)mol/(m^2·s·Pa),可认为其无缺陷;同时,考察了样品分子筛膜对H_2S/CH_4混合气的分离效果,在渗透压分别为0.3和0.5 MPa时,silicate-1分子筛膜的H_2S/CH_4的分离因子分别为1.99和4.44,而ZSM-5分子筛膜的CH_4/H_2S的分离因子分别为6.71和12.85。The MFI（ ZSM-5 and silicate-1） membranes with porous α-Al2O3 substrates were synthesized by secondary growth method. The results of scanning electron microscopy（ SEM） and X-ray diffraction（ XRD）indicate that the membranes with 5 μm thickness are composed of well-intergrown MFI crystals, which completely covers on the α-Al2O3 substrates in random orientation. The gas permeation measurements reveal that the resulting membranes are of high quality with fewnon-zeolitic pores. In addition,the separation properties of H2S/CH4 through the synthesized MFI membranes were investigated. Under the osmotic pressure of 0. 3 and0.5 MPa,the separation factors of H2S/CH4 by silicate-1 zeolite membrane are 1.99 and 4.44,and the separation factors of CH4/H2S by ZSM-5 zeolite membrane are 6.71 and 12.85,respectively.

关 键 词：MFI分子筛膜 H2S/CH4分离 二次生长法 

分 类 号：TQ051.893[化学工程]