GAS PERMEA TION PROPERTIES OF ASYMMETRIC CARBON MOLECULAR SIEVE MEMBRANES DERIVED FROM CARBOXYLATED POLY(PHENYLENE OXIDE)

摘要

Carbon molecular sieve membrane has great potential providing better gas separation performance among various inorganic membranes due to its higher selectivity, permeability and stability in corrosive and high temperature operations. In earlier studies, a variety of precursors such as polyimide, polyacrylonitrile, phenolic resin, poly(furfuryl alcohol), and others have been applied to carbon molecular sieve membranes. The most popular precursor of the reported carbon membranes is related to polyimide due to its high thermal stability and excellent gas separation performance; however, the higher material cost constrains its commercial availability. In addition, low investment and the Carbon molecular sieve membrane has great potential providing better gas separation performance among various inorganic membranes due to its higher selectivity, permeability and stability in corrosive and high temperature operations. In earlier studies, a variety of precursors such as polyimide, polyacrylonitrile, phenolic resin, poly(furfuryl alcohol), and others have been applied to carbon molecular sieve membranes. The most popular precursor of the reported carbon membranes is related to polyimide due to its high thermal stability and excellent gas separation performance; however, the higher material cost constrains its commercial availability. In addition, low investment and the operating costs are requirements for the module design; hence, the hollow fiber membrane is favorable due to its compactness and high interfacial area [1].