Yi Li1, Pei Shi Tin1, Tai-Shung Chung2, and Santi Kulprathipanja3. (1) Chemical & Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore, (2) Department of Chemical & Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore, Singapore, (3) UOP LLC, 50 East Algonquin Road, Des Plaines, IL 60017-5016
A novel ion exchange treatment of zeolite was introduced in this work to change the physical and chemical adsorption properties of penetrants in the zeolite. EDX data confirm the complete replacement of sodium ion in zeolite NaA by this special ion, while XRD patterns show no changes in crystalline structure of zeolite after the ion exchange treatment. The newly developed MMM materials show superior separation performance for natural gas and propane/propylene.