Oxygen storage material, process for its preparation and its...

Details Oxygen storage material, process for its preparation and its... Oxygen storage material, process for its preparation and its...

2007-04-10

2007-04-10

Wood, Elizabeth D. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S349000

Reexamination Certificate

active

11263353

ABSTRACT:
An oxygen storage material comprising cerium oxide and at least one second oxide of a metal M1is disclosed as well as a process for manufacturing the material and the use of this material in an exhaust gas cleaning catalyst. In a preferred embodiment the oxygen storage material comprises particles from a Ce/M1mixed oxide solid solution coated with an oxide of another metal M2. Metal M1e.g. can be calcium or zirconium while metal M2most preferably is aluminum.

REFERENCES:
patent: 4714694 (1987-12-01), Wan et al.
patent: 4940685 (1990-07-01), Sauvion et al.
patent: 5712218 (1998-01-01), Chopin et al.
patent: 5837642 (1998-11-01), Tanaka et al.
patent: 5888464 (1999-03-01), Wu et al.
patent: 5958827 (1999-09-01), Suda et al.
patent: 6040265 (2000-03-01), Nunan
patent: 6107240 (2000-08-01), Wu et al.
patent: 6133194 (2000-10-01), Cuif et al.
patent: 6150288 (2000-11-01), Suzuki et al.
patent: 6228799 (2001-05-01), Aubert et al.
patent: 6235270 (2001-05-01), Ishii et al.
patent: 6255242 (2001-07-01), Umemoto et al.
patent: 6306794 (2001-10-01), Suzuki et al.
patent: 6458741 (2002-10-01), Roark et al.
patent: 2002/0032123 (2002-03-01), Shigapov et al.
patent: 2002/0042342 (2002-04-01), Mussmann
patent: 2002/0090512 (2002-07-01), Hatanaka et al.
patent: 2002/0132732 (2002-09-01), Brenzy et al.
patent: 2003/0050189 (2003-03-01), Morikawa et al.
patent: 2004/0186016 (2004-09-01), Bog et al.
patent: 0 207 857 (1986-06-01), None
patent: 0 605 274 (1986-06-01), None
patent: 0 251 752 (1987-06-01), None
patent: 0 827 775 (1997-08-01), None
patent: 1 206 965 (2001-11-01), None
patent: 0 347 952 (1999-06-01), None
patent: WO 98/47476 (1998-10-01), None
patent: WO 02/34371 (2005-05-01), None
Search Report, EPO, dated Sep. 16, 2003, for EP 03005493.6 (6 pages).
Dimonte, R., Fornasiero, P., Kaspar, J., Graziani, M., Bernal, J.M., and Gomez-Herrero, A. (2000) Stabilisation of Nanostructured CeOZr0802 Solid Solution by Impregantion on AI203: A Suitable Method for the Production of Thermally Stable Oxygen Storage/Release Promoters for Three-way Catalysts, J. Chem Soc. Chem. Commun. p. 2167-2168.
Djuricic, B., Pickering, D., Pambuyser, P. and Thomas, P., Preparation and Properties of Alumina-ceria Nano-nano Composite, J. Mater. Sci. 1999, 34/8:1911-1919.
Adomopolous, O., Zhang, Y., Croft, M., Zakharchenko, I. Tsakalakos, T, and Muhammed, M. The Characterizaiton and Reactivity of Nanostructured Cericum-copper-oxide Composites for Environmental Catalysis, Mat. Res. Soc. Symp. Proc. 2001, vol. 676.
Palmquist, A.E.C., Wirde, M., Gelius, U, and Muhammed, M., Surfaces of Doped Nanophase Cerium Oxide Catalysts, Nanostructured Materials 1999 11/8:995-1007.

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