CO2／CH4分离膜及沸石填料影响渗透过程的研究
Study of CO_2/ CH_4 Separation Membranes and the Effect of Zeolite Filler on Permeation Process
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摘要: 报导了甲基硅橡胶和纤维素（ＣＡ、ＣＴＡ、ＥＣ）膜对ＣＯ２、ＣＨ４的选择透气性能，并讨论了沸石作为填料所引起的分子筛作用的气体渗透过程。甲基硅橡胶的气体渗透系数最高，而选择性最低，且不受填料沸石的影响。纤维素膜的气体选择性较大，渗透系数可以通过沸石的加人而明显增加。特别是沸石１３Ｘ．沸石３Ａ、４Ａ、５Ａ在ＥＣ膜中对气体分子筛作用，改变了气体原有的渗透过程，提高了选择性。使用Ａｒｒｈｅｎｉｕｓ公式计算出ＥＣ－沸石３Ａ膜的气体渗透活化能。Abstract: The permselectivities of CO2 and CH4 through PDMS and cellulose (CA, CTA, EC) membranes are reported. In addition, the effect of zeolite in membrane as filler on gas permeation process isdlsscussed. PDMs membranes show the highest permeability because of
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