Development of the carbon dioxide capture and storage technique using surface diffusion

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The porous ceramics filter with avg. pore size of 60-800 nm and porosity of 30-45% were prepared. The chemicals having the affinity for the gas coated the pore walls of the obtained samples. The porous ceramics filter having pore size larger than mean free path of the gases didn' t show gas separation ability. That having pore size as same as mean free path show gas separation ability. The gas permeability of them is 100-1000 times greater than a typical polymer membrane. It is expected that a more effective as separation module is constructed.