Preparation of silver ions stabilized organic-inorganic hybrid materials for olefin separation

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Silver ions stabilized organic-inorganic hybrid olefin separation membranes were prepared by sol-gel method. The prepared membranes indicated high ethylene/ethane selectivity (more than 100). The mixed-gas permeation properties of the prepared membranes as a function of operating time were measured. The degree of separation remained excellent and essentially stable over the measuring period. From these results, the prepared membranes could be applicable to actual ethylene separation.