Process for preparing cerium (IV) catalyst compounds
AssigneeRhone-Poulenc Chemicals Limited
InventorsIan Michael Hawkins, Heiko Heinrich Karl Mauermann
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AssigneeRhone-Poulenc Chemicals Limited
InventorsIan Michael Hawkins, Heiko Heinrich Karl Mauermann
Estimating the term…
Novel cerium (IV) oxidic compounds, well suited as catalysts, e.g., for the clean combustion of hydrocarbon fuels and for the "drying" of paint compositions, each Ce(IV) atom of which being coordinated with two anions of an organic oxyacid advantageously having a pKa greater than 1, preferably greater than 2, or a mixture of such oxyacids, and the oxidic oxygen atom or atoms of which being other than those comprising the organic oxyacids; representative such novel cerium (IV) oxidic compounds, whether yellow crystalline solids or yellow liquids, have the formula: (H.sub.2 O).sub.p Ceo(A).sub.2.(AH).sub.n.!.sub.m in which the radicals A, which may be the same or different, are each the residue of an organic oxyacid of formula AH, p is an integer ranging from 0 to 5, n ranges from 0 to 2 and m is an integer ranging from 1 to 12.
A process for the preparation of a cerium (IV) oxidic compound comprising reacting a cerium (IV) salt with a salt of an organic oxyacid, or with an admixture of salts of organic oxyacids to produce a cerium (IV) oxidic compound having each Ce (IV) atom being coordinated with two anions of said salt of an organic oxyacid, or said admixture of salts of organic oxyacids, and at least one additional oxygen atom which is not an oxygen atom in the salt of an organic oxyacid or in the admixture of salts of organic oxyacids.
Dependencies are inferred from the claim text.