Amax Incorporated

Calvin J Hallada

Henry F Barry

Roger F Sebenik

Fred W Moore

George A Tsigdinos

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.

Recovery and recycle of molybdenum values from coal liquefaction residue

A flame retardant styrenic synthetic polymer containing a flame retardant agent comprising a mixture of a molybdenum compound selected from the group consisting of molybdenum trioxide, ammonium dimolybdate, and ammonium heptamolybdate, in combination with a halogenated hydrocarbon compound selected from the group consisting of halogenated aromatic compounds, halogenated cyclic aliphatic compounds, and mixtures thereof.

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Ann Arbor, MI, United States of America

Calvin J Hallada