C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
260/427.5
C07F 11/00 (2006.01) C07D 301/19 (2006.01)
Patent
CA 1250852
IMPROVED SYNTHESIS OF MOLYBDENUM/ALCOHOL COMPLEXES USEFUL AS EPOXIDATION CATALYSTS (D#80,316 -F) ABSTRACT OF THE DISCLOSURE Molybdenum/alcohol complexes useful as epoxidation catalysts made by reacting an oxygen containing molybdenum compound with a monohydric alcohol and ammonium hydroxide at elevated temperatures are described. It has been discovered that complexes with a molybdenum content of 2 to 6.5 wt.% can be made if a small amount of ammonium hydroxide is in cluded in the reactant mixture. The amount of ammonium hydroxide depends on the ratio of alcohol to molybdenum compound. If this ratio is correct, the resulting complex solution is stable and easily filterable. Molybdenum tri- oxide and 2-ethyl-1-hexanol are the particularly preferred reactants. Alternatively, molybdenum/alcohol complexes useful as epoxidation catalysts can be made by reacting oxygen- containing molybdenum compounds with a monohydric alcohol and water at elevated temperature. It has been discovered that complexes with a molybdenum content of 3 to 10.5 wt.% can be made if a small amount of water is included in the reaction mixture. The amount of water depends on the ratio of alcohol to molybdenum compound. If this ratio is correct, the resulting complex solution is stable and is easily fil- terable. Ammonium heptamolybdate or ammonium heptamolybdate tetrahydrate or ammonium dimolybdate and 2-ethyl-1-hexanol are the particularly preferred reactants.
483719
Keating Kenneth P.
Marquis Edward T.
Sanderson John R.
Smith William A.
Huntsman Specialty Chemicals Corporation
Smart & Biggar
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