离子液体支撑膜CO_2/N_2分离性能的温变与压变规律研究
摘要
将1-己基-3-甲基咪唑四氟硼酸盐离子液体固载于亲水型聚偏氟乙烯基膜上制备出离子液体支撑膜。建立了膜分离实验装置,采用恒压变容测试法研究了其CO_2/N_2分离性能。结果表明:随着操作温度的升高二氧化碳渗透率呈对数增长关系,而CO_2/N_2理论分离因子呈指数降低关系;操作压力对离子液体支撑膜的分离性能影响不大。表明离子液体支撑膜在烟气二氧化碳分离领域具有潜在的应用价值。
引文
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[5] Francisco G J, Chakma A, Feng X. Membranes comprising of alkanolamines incorporated into poly(vinyl alcohol)matrix for CO2/N2 separation[J]. Journal of Membrane Science, 2007, 303(1):54-63.