Patent ID: 7998246
Filing Date: 2011-08-16
Classification: B01D

Abstract:
1. A process for separating at least one gas from a mixture of gases comprising: a) providing a mixed matrix gas separation membrane comprising a polymer stabilized molecular sieves approximately uniformly dispersed in a continuous polymer matrix phase comprising at least two different polymers wherein said continuous polymer matrix is permeable to at least one gas in said mixture of gases wherein said polymer stabilized molecular sieves are stabilized by at least one polymer selected from the group consisting of polyethersulfones, sulfonated polyethersulfones, polyethers, polyether ketones, poly(ethylene imine)s, poly(amidoamine)s, polyetherimides cellulose acetate, cellulose triacetate, cellulose acetate-butyrate, cellulose propionate, ethyl cellulose, methyl cellulose, nitrocellulose, and then said polymer stabilized molecular sieves are dispersed in said continuous polymer matrix phase; b) contacting the mixture of gases on one side of the mixed matrix gas separation membrane to cause said at least one gas to permeate the mixed matrix gas separation membrane; and c) removing from a side opposite to said one side of the mixed matrix gas separation membrane a permeate gas composition comprising a portion of said at least one gas which has permeated said mixed matrix gas separation membrane.