Lanthanum Cerium Manganese Hexaaluminate Combustion Catalysts for Compact Steam Reformers
APPLIED RESEARCH ASSOCIATES INC TYNDALL AFB FL
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Several substituted hexa-aluminates were synthesized via a surfactant-mediated process and tested for their catalytic propane combustion activity. After calcination at 1100 degrees C, catalyst surface areas were as high as 78 m2g. The best catalysts contained lanthanum, cerium, and manganese, with La0.6 Ce0.4 MnAl11 O19 representing the optimum. A parallel plate catalytic combustion reactor with a catalyst supported on Fecralloy foam burned propane and JP-8 jet fuel with a low pressure drop, and demonstrated a sufficiently-uniform temperature profile, and stable self-sustained operation. This combustion reactor will be suitable for use in compact steam reformers producing hydrogen for mobile fuel cells.
- Physical Chemistry