Dense ceramic membranes for reactive separation of oxygen
Conference
·
OSTI ID:126806
- Argonne National Lab., IL (United States); and others
Oxides in the system Sr-Fe-Co exhibit mixed (electronic/ionic) conductivity. These mixed-conducting oxides can operate without external circuitry to separate oxygen from oxygen-containing gases. We have used these oxides for partial oxygenation of methane, with air as source of oxygen. The ceramics are fabricated in the form of dense tubes. Methane and air are passed over the shell and core side of the membrane tube, respectively. Membrane performance is evaluated in a conversion reactor operated at {approx}850{degrees}C to directly convert methane into synthesis gas (CO + H{sub 2}). Methane conversion efficiencies of >98% have been observed. Some of the tubes have been operated for more than 1000 h. In this talk, we describe processing and fabrication of the membrane tubes, their characterization, and performance in the conversion reactor.
- OSTI ID:
- 126806
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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