AlPO-18分子筛膜在N2/CH4体系中的分离性能研究  

The Studies on N2/CH4 Separation Performance of AlPO-18 Membranes

作　　者：占天琪 吴婷[1] 石玉银 李玉琴 桂田[1] 陈祥树[1] ZHAN Tianqi;WU Ting;SHI Yuyin;LI Yuqin;GUI Tian;CHEN Xiangshu(College of Chemistry and Chemical Engineering,Institute of Advanced Materials,State-Province Joint Engineering Laboratory of Zeolite Membrane Materials,Jiangxi Normal University,Nanchang Jiangxi 330022,China)

机构地区：[1]江西师范大学化学化工学院先进材料研究院分子筛膜材料国家地方联合工程实验室

出　　处：《江西师范大学学报（自然科学版）》2019年第6期576-581,共6页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家国际合作重大专项(2015DFA50190);国家自然科学基金(21968009);江西省科技厅科技课题(20192ACB80003,20192BBH80024)资助项目

摘　　要：采用廉价的N,N-二异丙基乙胺(DIPEA)为结构导向剂,通过2次水热合成法,在大孔管状莫来石支撑体上成功制备出具有N2/CH4分离性能且重复性良好的AlPO-18分子筛膜.对合成的AlPO-18分子筛膜进行了不同单气体的渗透性能测试;考察了测试压力及温度对N2、CH4在AlPO-18分子筛膜上的气体渗透行为影响.在303 K及0.1 MPa压差测试条件下,性能最佳的AlPO-18分子筛膜对N2的渗透速率及N2/CH4的理想选择性分别为0.91×10^-7 mol·m^-2·s^-1·Pa^-1和7.9.High-performance and reproducible AlPO-18 membranes are successfully prepared on porous mullite support by secondary hydrothermal synthesis with a low-cost N,N-diisopropylethylamine(DIPEA)as template for N2/CH4 separation.The composed AIPO-18 membranes are measured by single-gas permeances for H 2,CO 2,N2,CH4,SF 6.The influence of temperature and pressure drop on the permeance performance of N2/CH4 are studied.The best membrane displays a N2 single gas permeance of 0.91×10^-7 mol·m^-2·s^-1·Pa^-1 with the ideal selectivity of 7.9 for N2/CH4 at 303 K and a 0.1 MPa pressure drop.

关 键 词：AlPO-18分子筛膜 DIPEA N2/CH4分离 气体渗透行为 

分 类 号：TQ028.8[化学工程]