US 7,612,011 B2
	Ceria-based mixed-metal oxide structure, including method of making and use
Thomas Henry Vanderspurt, Glastonbury, Conn. (US); Fabienne Wijzen, Beaufays (Belgium); Xia Tang, West Hartford, Conn. (US); Miriam P. Leffler, Manchester, Conn. (US); Rhonda R. Willigan, Manchester, Conn. (US); Caroline A. Newman, Cromwell, Conn. (US); Rakesh Radhakrishnan, Vernon, Conn. (US); Fangxia Feng, Richardson, Tex. (US); Bruce Leon Laube, South Windsor, Conn. (US); Zissis Dardas, Worcester, Mass. (US); Susanne M. Opalka, Glastonbury, Conn. (US); and Ying She, Worcester, Mass. (US)
Assigned to UTC Power Corporation, South Windsor, Conn. (US)
Filed on Nov. 28, 2006, as Appl. No. 11/605,515.
Application 11/605515 is a division of application No. 10/402808, filed on Mar. 28, 2003, granted, now 7,166,263.
Application 10/402808 is a continuation in part of application No. 10/109161, filed on Mar. 28, 2002, abandoned.
Prior Publication US 2007/0093382 A1, Apr. 26, 2007
This patent is subject to a terminal disclaimer.
Int. Cl. C01F 17/00 (2006.01)

U.S. Cl. 502—302  [502/303; 502/304]

23 Claims

1. A catalyst for facilitating a water gas shift reaction, the catalyst comprising a noble metal on a mixed metal oxide, said mixed metal oxide comprising a homogeneous, nanocrystalline, mixed metal oxide of cerium and at least one other metal constituent selected from the group consisting of Zr, Hf, Nb, Ta, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Mo, W, Re, Rh, Sb, Bi, Ti, V, Mn, Co, Cu, Ga, Ca, Sr and Ba, said mixed metal oxide having a surface area of at least about 150 m2/g, an average crystallite size less than 4 nm and agglomerated to form a skeletal structure with pores, average pore diameters being greater than 4 nm and normally being greater than the average crystallite size, and wherein the surface area of the skeletal structure per volume of the mixed metal oxide is greater than about 320 m2/cm3.