| 摘要 |
METHOD OF MAKING MOLYBDENUM/ALKYLENE GLYCOL COMPLEXES USEFUL AS EPOXIDATION CATALYSTS (D#80,557-F) An improved procedure for making molybdenum/ethylene glycol complexes useful as epoxidation catalysts wherein the cycle time necessary for catalyst preparation is significantly 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.degree. to about 150.degree.C over a 5 to 100 minute period while simultaneously reducing the pressure to about 5 to about 100 mm Hg and, after an appropriate 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 molybdenum content of about 10 to 15 wt.% of molybdenum. |
