H2/CO2 Gas Separation Characteristic of Zeolite Membrane at High Temperature
Due to the need for CO2 sequestration associated with H2 production from fossil fuels, zeolite membrane are very promising due to their low cost, high stability and high permeance. Recently, the faujasite(FAU), the silica/aluminophophate(SAPO-4) framework family of zeolite have been studied for CO2 gas separation. In our study, ZSM-5 membrane was prepared on the porous alumina support using a hydrothermal technique. The thickness of zeolite membrane was controlled by the hydrothermal reaction time and temperature. The prepared zeolite membranes were characterized with SEM and thin film XRD. The hydrogen permeability and selectivity toward carbon dioxide gas were 0.6x 10-6 mole/m2.s.pa and 3.16, respectively. The hydrogen selective zeolite membranes show promising application in hydrogen separation from coal gasification such as Integrated Gasification Combined Cycle (IGCC).
Young Won Chang, Nack J. Kim and Chong Soo Lee
W. T. Kwon et al., "H2/CO2 Gas Separation Characteristic of Zeolite Membrane at High Temperature", Advanced Materials Research, Vols. 26-28, pp. 267-270, 2007