Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1982-06-30
1983-02-15
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
423 58, 423 61, 208 10, C01G 3900
Patent
active
043741002
ABSTRACT:
The residue from a Mo-catalyzed coal liquefaction process is treated to recover the Mo in a form in which the Mo can easily be recycled and reused as a catalyst for coal liquefaction. The process includes intimately mixing the residue with alkali in excess of the stoichiometric amount required for water-soluble molybdate formation, subjecting the mixture to an oxidative roast at about 600.degree. C. to about 800.degree. C. for up to about one hour, leaching the roasted product with water to extract Mo values into solution, and then carrying out a series of steps involving acidifying and ammoniating the solution to form a Mo-bearing precipitate which is recovered and dissolved in aqueous ammonium hydroxide to form a solution which can be applied to coal to catalyze coal liquefaction.
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Barry Henry F.
Hallada Calvin J.
Sebenik Roger F.
Tsigdinos George A.
Amax Inc.
Black Donald T.
Carter Herbert T.
Ciomek Michael A.
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