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。证实了复合膜的二氧化碳分离性能。采用真空镀膜的方法，成功地制备了Rho/疏水二氧化硅分子筛/二氧化碳渗透选择性复合膜。考察了复合膜的制备条件、气体渗透性能以及在湿条件下的耐久性。该复合膜对二氧化碳具有选择性，在湿条件下可稳定工作100h。

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.