Composition based on zirconium oxide and oxides of cerium,...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

Reexamination Certificate

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Details

C502S303000, C502S304000, C502S349000, C423S021100, C423S069000, C423S071000, C423S263000, C423S594120, C423S608000

Reexamination Certificate

active

07820586

ABSTRACT:
The invention concerns a composition based on zirconium and cerium oxides in an atomic ratio Zr/Ce>1, and further comprising lanthanum oxide or an oxide of a rare earth other than cerium and lanthanum. The invention is characterized in that after calcination for 6 hours at 1150 .C it has a specific surface area of not less than 10 m;/g. The composition is obtained by forming a mixture containing a sol of a zirconium compound and cerium, lanthanum, said rare earth compounds, contacting said mixture with a basic compound solution, while heating and calcining the resulting precipitate. The composition can be used as catalyst.

REFERENCES:
patent: 5057483 (1991-10-01), Wan
patent: 5532198 (1996-07-01), Chopin et al.
patent: 5723101 (1998-03-01), Cuif
patent: 6214306 (2001-04-01), Aubert et al.
patent: 6228799 (2001-05-01), Aubert et al.
patent: 6248688 (2001-06-01), Wu et al.
patent: 6255306 (2001-07-01), Macor
patent: 6355220 (2002-03-01), Blanchard et al.
patent: 6387338 (2002-05-01), Anatoly et al.
patent: 2002/0107141 (2002-08-01), Yoshikawa
patent: 0 955 267 (1999-10-01), None
patent: 1 052 008 (2000-11-01), None
patent: 1 053 779 (2000-11-01), None
patent: 1 174 174 (2002-01-01), None
patent: WO 95/35152 (1995-12-01), None
patent: WO 97/43214 (1997-11-01), None
patent: WO 03/020643 (2003-03-01), None
S. Brunauer et al., “Adsorption of Gases in Multimolecular Layers”,The Journal of the American Chemical Society, vol. 60, Feb. 1938, pp. 309-319.
M. L. McConnell, “Particle Size Determination by Quasielastic Light Scattering”,Analytical Chemistry, vol. 53, No. 8, Jul. 1981, pp. 1007A-1018A.

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