Method for recovering solid molybdenum compounds

Details Method for recovering solid molybdenum compounds Method for recovering solid molybdenum compounds

C - Chemistry, Metallurgy

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53/146, 260/372.

C07D 301/19 (2006.01) B01J 31/40 (2006.01) B01J 38/48 (2006.01) C01B 35/12 (2006.01) C01G 39/02 (2006.01) C07D 303/04 (2006.01) C22B 3/44 (2006.01) C22B 34/34 (2006.01)

Patent

CA 2019147

METHOD FOR RECOVERING SOLID MOLYBDENUM COMPOUNDS (Docket No. 80,697-F) ABSTRACT OF THE DISCLOSURE A process for substantially completely removing a minor amount of molybdenum dissolved in a substantially anhydrous organic solution, such as a heavy distillation fraction resulting from the removal of unreacted propylene, propylene oxide and tertiary butyl alcohol from an epoxidation reac- tion mixture: wherein from about 1 to about 10 wt.% of an aqueous solution of sodium meta borate containing from about 1 to about 10 wt.% of dissolved sodium meta borate is added to an organic solution containing dissolved molybdenum catalyst in an amount sufficient to provide a molar excess of sodium meta borate, based on the gram atoms of dissolved molybdenum in said organic solution, to provide a mixture, wherein the mixture is maintained at a temperature ranging from about ambient temperature up to about 100°C. at a pressure of about 0 to about 1,000 psig. for about 0.5 to about 5 hours, sufficient to precipitate at least about 95 mol% of the soluble molybdenum from the mixture, and wherein the mixture is filtered to obtain a filtrate containing not more than about 100 ppm of molybdenum.

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