Method of making molybdenum/alkylene glycol complexes useful...

Details Method of making molybdenum/alkylene glycol complexes useful... Method of making molybdenum/alkylene glycol complexes useful...

C - Chemistry, Metallurgy

07

F

260/427.5

C07F 11/00 (2006.01)

Patent

CA 1307282

METHOD OF MAKING MOLYBDENUM/ALKYLENE GLYCOL COMPLEXES USEFUL AS EPOXIDATION CATALYSTS (D#80,557-F) ABSTRACT OF THE DISCLOSURE An improved procedure for making molybdenum/ethylene glycol complexes useful as epoxidation catalysts wherein the cycle time necessary for catalyst preparation is signifi- cantly reduced by preparing a mixture of undiluted ethylene glycol with undiluted ammonium dimolybdate in the molar ratio of about 7 to about 20 moles of ethylene glycol per gram atom of molybdenum, heating the mixture from ambient conditions to a temperature of about 25° to about 150°C over a 5 to 100 minute period while simultaneously reducing the pressure to about 5 to about 100 mm Hg and, after an appro- priate holding time, if necessary, returning the mixture to ambient conditions and recovering an essentially solids free clear catalytically active solution of a molybdenum/ethylene glycol complex in unreacted ethylene glycol having a molyb- denum content of about 10 to 15 wt.% of molybdenum.

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