FUEL 4 |
| Catalytic membrane reactors (CMR's) couple reaction and separation in a single operation. When the membrane selectively removes product(s), conversion may exceed the value determined by closed system equilibrium. In the case of steam reforming of hydrocarbons for hydrogen production, numerous investigators have employed palladium and Pd-alloy membranes to promote conversion and recover essentially CO-free - i.e., PEM fuel cell quality - hydrogen. Design of cost- and space-efficient devices requires judicious matching of catalytic activity with membrane permeance. Which of the two - catalyst or membrane development – should be prioritized, is a non-trivial question. This paper presents a theoretical analysis and supporting experimental data, that make it possible to answer that question in the case of hydrogen production via hydrocarbon reforming in Pd-alloy-based CMR's. |
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Fuel Processing for Hydrogen Production: Perspectives on Hydrogen Generation
8:55 AM-11:40 AM, Sunday, August 19, 2007 Boston Park Plaza -- Berkeley Rm, Oral
Division of Fuel Chemistry |