Relationship between properties of various zeolites and their carbon dioxide adsorption behaviors in pressure swing adsorption operation

In order to search proper zeollites for CO/sub 2/ separation from CO/sub 2/-containing gas mixtures by pressure swing adsorption (PSA), relationships between properties of zeolites and their adsorption-desorption behaviors for CO/sub 2/ were investigated. Highly crystallized zeolites having a high surface area and the three-dimensional pore connection structure were suitable for CO/sub 2/ separation. Among many kinds of natural and synthetic zeolites, chabazite and 13X were most proper for the purpose.