Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2003-06-26
2010-10-26
Vanoy, Timothy C (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
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.
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Buchanan Ingersoll & Rooney P.C.
Liao Diana J
Rhodia Operations
Vanoy Timothy C
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