Method for preparing pure, thermally stable and high surface...

Chemistry of inorganic compounds – Rare earth compound

Reexamination Certificate

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C423S593100, C423S594160, C423S021100

Reexamination Certificate

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07094383

ABSTRACT:
A method for the preparing pure, thermally stable and high surface area ceria is described, wherein the ceria maintains a surface area of 12 m2/g after calcination at 980° C. in air for 4 hours. In the method, an aqueous solution containing Ce3+, Mg2+, organic acid and organic polymer is prepared and then evaporated to obtain a gel. The gel is calcined to obtain a mixed oxide, and then MgO is leached from the mixed oxide with a solvent to obtain raw ceria. The raw ceria is then washed, filtered and dried to obtain a ceria product.

REFERENCES:
patent: 3830758 (1974-08-01), Snethorst et al.
patent: 4088922 (1978-05-01), Wolfe
patent: 4661330 (1987-04-01), Chane-Ching et al.
patent: 4714694 (1987-12-01), Wan et al.
patent: 4859432 (1989-08-01), David et al.
patent: 5271858 (1993-12-01), Clough et al.
patent: RE36573 (2000-02-01), Barrow et al.
patent: 2004/0127351 (2004-07-01), Basile et al.
patent: 2005/0142053 (2005-06-01), Takamura et al.
patent: 0 444 470 (1991-09-01), None

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