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Methane Reforming Kinetics within a Ni-YSZ SOFC Anode Support

Hecht, E.; Gupta, G.K.; Zhu. H.; Dean, A.M.; Kee, R.J.; Maier, L.; Deutschmann, O.

This paper reports experimental and modeling investigations of thermal methane reforming chemistry within porous Ni-YSZ anode materials. Because the reforming chemistry is difficult to observe directly in an operating fuel cell, a specially designed experiment is developed. In the experiment a 0.75 mm-thick anode is sandwiched between two small co-flowing gas channels. One channel represents the fuel channel of a solid-oxide fuel cell (SOFC). The composition in the other channel carries the species that would be produced in an operating fuel cell by the electrochemical charge-transfer reactions in the thin three-phase regions near the interface between the anode and the dense electrolyte membrane (i.e., H2O and CO2). Because the anode structure is porous (and there is no dense electrolyte or cathode applied), there is convective and diffusive species flux between the two flow channels. The entire assembly is maintained at approximately 800 degrees C in a furnace. The results of heterogeneous reforming kinetics are determined by using mass spectrometry to measure the species composition at the outlet of both channels. Experimental re ... mehr

Zugehörige Institution(en) am KIT Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2005
Sprache Englisch
Identifikator ISSN: 0926-860X
KITopen-ID: 1000004045
Erschienen in Applied Catalysis / A
Band 295
Heft 1
Seiten 40–51
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