Abstract
Among novel technologies under development as cost-effective alternatives to conventional oxygen production methods, mixed ionic?electronic conducting ceramic membranes offer great promise. These oxygen-transport membranes selectively separate oxygen from an air supply, or other source, at elevated temperature (700°-1000°C) under an oxygen chemical potential gradient. Besides direct use in schemes for oxygen production, the membranes have attracted much interest for the conversion of natural gas into synthesis gas (CO + H2). A discussion on the oxygen transport properties, oxygen stoichiometry, and phase stability of SrCo0.8Fe0.2O3-d and Ba0.5Sr0.5Co0.8Fe0.2O3-d, and related compositions covers the influence of CO2 adsorption on the kinetics of surface oxygen exchange, chemical expansion, and the phenomenon of kinetic demixing; and prospects to use these materials as oxygen transport membranes. This is an abstract of a paper presented at the 2006 AIChE National Meeting (San Francisco, CA 11/12-17/2006).
Original language | English |
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Title of host publication | 2006 AIChE Annual Meeting |
Publication status | Published - 1 Dec 2006 |
Event | 2006 AIChE Annual Meeting - San Francisco, United States Duration: 12 Nov 2006 → 17 Nov 2006 |
Conference
Conference | 2006 AIChE Annual Meeting |
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Country/Territory | United States |
City | San Francisco |
Period | 12/11/06 → 17/11/06 |