α-纤维素膜气体分离性能  

GAS PERMEABILITY OF NOVEL α-CELLULOSE MEMBRANE

作　　者：吴江[1] 刘健辉[1] 袁权[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《化工学报》2003年第3期333-338,共6页CIESC Journal

基　　金：国家重点基础研究发展规划项目 (G19990 2 2 2 0 3) ~~

摘　　要：制备了α 纤维素膜并对其气体分离性能进行了研究 .测定了水溶胀下 ,CO2 、H2 、CH4 、N2 、O2 等气体在α 纤维素膜内的气体渗透速率 .通过比较研究醋酸纤维素膜、苯甲酰化纤维素膜和聚砜膜在干态和湿态下的气体渗透性能 ,揭示了水对α 纤维素膜气体渗透性能的作用规律 .Novel cellulose membranes were prepared by using amine oxides as its solvent. Steady-state gas permeation rates in a water-swollen α-cellulose membrane were measured at various temperatures. The function of water on α-cellulose membrane was also revealed by comparatively studying the gas permeability of cellulose acetate membrane, benzoylated cellulose membrane and polysulfone membrane in dry and wet state. The effect of swelling on permeability of α -membrane was studied in some details. The difference of gas permeability between dry and water-swollen α-cellulose membrane was investigated. The permeability of CO2 was as high as 130 barrer [1 barrer=7.5×-14 cm3 (SPT)&middotcm &middot(cm2&middots&middotPa)-1]; the separation factor of CO2/H2 can be up to 15.

关 键 词：纤维素膜 气体 渗透 含水量 溶解-扩散 膜分离 氧气 二氧化碳 氮气 氢气 甲烷 分离性能 

分 类 号：TQ028.8[化学工程]