Development of hydrophobic silica and zeolite composite membrane for carbon dioxide separation

研究了沸石/疏水二氧化硅复合膜的制备方法。对复合膜的二氧化碳分离性能进行了验证。采用真空包膜的方法制备了沸石RHO /疏水二氧化硅复合膜。考察了复合膜的制备条件、透气性和湿态耐久性。复合膜在湿条件下表现出100 h的选择性和稳定性能。

Preparation method of the zeolite / hydrophobic silica composite membranes has been developed. The carbon dioxide separation properties of the composite membrane was confirmed. We’re successfully prepared zeolite RHO / hydrophobic silica composite membranes with permselective carbon dioxide by vacuum coating method. The preparation condition of the composite membrane, its gas permeation properties and the durability under wet condition was examined. The composite membrane showed the carbon dioxide selectively and stable performance for 100 h under wet condition.