PROCESS FOR PREPARING AT LEAST ONE COBALT AND/OR NICKEL SALT OF AT LEAST ONE ANDERSON HETEROPOLYANION COMBINING MOLYBDENUM AND COBALT OR NICKEL IN ITS STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a process for preparing a solution formed by at least one cobalt and/or nickel salt of at least one heteropolyanion combining molybdenum and cobalt or molybdenum and nickel in its structure, which can be carried out at an industrial scale.

SOLUTION: The preparation process comprises: (a) mixing at least one source of molybdenum and at least one oxidizing compound in aqueous solution to synthesize peroxomolybdate ions at an acidic pH, the (oxidizing compound/molybdenum source) molar ratio being in the range 0.1 to 20; and (b) introducing at least one cobalt precursor and/or at least one nickel precursor into the solution from the step (a) to form a solution comprising at least the salt in which the (Co+Ni)/Mo molar ratio is in the range 0.25 to 0.85.

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