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Transition metal carbides, nitrides and borides, and their oxygen containing analogs useful as water gas shift catalysts

United States Patent

6,623,720
September 23, 2003
View the Complete Patent at the US Patent & Trademark Office
Mono- and bimetallic transition metal carbides, nitrides and borides, and their oxygen containing analogs (e.g. oxycarbides) for use as water gas shift catalysts are described. In a preferred embodiment, the catalysts have the general formula of M1.sub.A M2.sub.B Z.sub.C O.sub.D, wherein M1 is selected from the group consisting of Mo, W, and combinations thereof; M2 is selected from the group consisting of Fe, Ni, Cu, Co, and combinations thereof; Z is selected from the group consisting of carbon, nitrogen, boron, and combinations thereof; A is an integer; B is 0 or an integer greater than 0; C is an integer; O is oxygen; and D is 0 or an integer greater than 0. The catalysts exhibit good reactivity, stability, and sulfur tolerance, as compared to conventional water shift gas catalysts. These catalysts hold promise for use in conjunction with proton exchange membrane fuel cell powered systems.
Thompson; Levi T. (Northville, MI), Patt; Jeremy (Novi, MI), Moon; Dong Ju (Ann Arbor, MI), Phillips; Cory (Detroit, MI)
The Regents of the University of Michigan (Ann Arbor, MI)
09/ 822,609
20020013221
March 30, 2001
STATEMENT OF GOVERNMENTAL SUPPORT This invention was made with Government support under Grant No. DE-FC02-98EE50538 awarded by the Department of Energy. The Government has certain rights in this invention.