渗透
膜
微型多孔材料
化学工程
材料科学
沸石
基质(水族馆)
气体分离
多孔性
选择性
催化作用
膜技术
色谱法
化学
有机化学
复合材料
海洋学
地质学
工程类
生物化学
作者
Nha Minh Nguyen,Quang Thanh Le,Duy Phuc‐Hoang Nguyen,Tung Ngoc Nguyen,Thanh Van Le,Tung Cao Thanh Pham
标识
DOI:10.1016/j.memsci.2021.119110
摘要
Microporous membrane has shown great potential for the separation of carbon dioxide from the gas mixture. Beside the membrane performance, the membrane preparation method is a factor to be concerned in this technique. In this work, pure silica DDR zeolite membranes on silica porous substrate were synthesized from an economical and environmentally efficient process. Porous silica substrate was fabricated using a low cost material. The membrane growth reaction used a minimum amount of chemical, produced no waste generation. Part of the reactant is supplied from porous substrate. The membrane quality is strongly dependent on the exposed faces of seed crystals and the pH value of the template solution. The obtained membranes show very high permeance and selectivity for CO2 from a CO2/CH4 gas mixture in both dry and humid conditions and hot gas flow. The membrane maintains stability in high performance with the separation factor of 440–500 for a test period of one week.
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