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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。
The selective gas permeability of methyl silicone rubber and cellulose (CA, CTA, EC) membranes to CO2 and CH4 was reported. The gas permeation process of molecular sieve caused by zeolite as filler was also discussed. Methyl silicone rubber has the highest gas permeability coefficient with the lowest selectivity and is not affected by the filler zeolite. Cellulose membrane gas selectivity, permeability coefficient can be significantly increased by the addition of zeolite. Especially zeolite 13X. Zeolite 3A, 4A, 5A in the EC membrane on the molecular sieve effect, changing the original gas permeation process to improve the selectivity. The Arrhenius equation was used to calculate the gas permeation activation energy of the EC-Zeolite 3A membrane.