过渡金属有机络合物添加剂对聚酰亚胺气体分离膜性能的影响  

EFFECT OF TRANSITION METAL-CONTAINING ORGANIC COMPLEX ADDITIVE ON THE PROPERTIES OF POLYIMIDE GAS SEPARATION MEMBRANES

作　　者：吴庸烈[1] 刘静芝[1] 郑敬河 杨金荣[1] 杨富 丁孟贤[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《应用化学》1993年第1期47-50,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金

摘　　要：采用具有庞大取代基团的过渡金属有机络合物作为添加剂制备了聚酰亚胺气体分离膜,研究了过渡金属盐、有机配体和金属络合物对聚酰亚胺均质膜和非对称膜氢、氮气体透过性能的影响,结果表明过渡金属盐添加剂提高了分离系数,但降低了气体透过速率;有机配体添加剂增大了气体透过速率却降低了分离系数;以络合物作添加剂时,可在不降低分离系数的情况下使气体透过速率得到提高,是一种改进气体分离膜性能的有效方法。Polyirnide gas separation membranes were preparated using metal-containing organic complex with big substituting group as additive. The effects of tranaition metal salts, organic ligand and metal complex on the permeability of polyimide homogenous membranes and asymmetric membranes for separation of hydrogen and nitrogen were studied. It was showed that MnCl_2, Co(NO_3)_2, Cr(Ac)_3 enhanced the separation coefficient and lowered the permeability of the membrane; organic ligand additive enhanced the permeability and lowered separation coefficient; when metallorganic complex was used, the gas permeability was enbanced without decline of separation coefficient.

关 键 词：聚酰亚胺 气体分离膜 过渡元素 

分 类 号：TQ028.8[化学工程]