Cyclohexane oxidation in the presence of binary catalysts

Details Cyclohexane oxidation in the presence of binary catalysts Cyclohexane oxidation in the presence of binary catalysts

1974-04-11

1976-10-19

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260586R, 260610B, 260631R, C07C 4502, C07C 2712, C07C 2704

Patent

active

039871002

ABSTRACT:
The process of oxidizing cyclohexane to produce cyclohexanone and cyclohexanol in the weight ratio of 0.5 to 1.5 of cyclohexanone to cyclohexanol, said process comprising contacting a stream of liquid cyclohexane with oxygen in each of at least three successive oxidation stages by introducing into each stage a mixture of gases comprising molecular oxygen and inert gas, said oxygen being introduced in amounts that may range from an amount that will substantially all react with the cyclohexane under the particular conditions involved to an amount in excess of the amount required to react with the cyclohexane, said excess being such that the overall oxygen consumed in the oxidation zone is not more than 95 mole percent of the amount fed under the particular conditions involved, in the presence of a binary catalyst system comprising 0.02 to 0.9 ppm chromium and 0.1 to 5 ppm cobalt at a temperature of from 130.degree. to 200.degree. C. and a pressure of from 60 to 350 psig, reacting any cyclohexylhydroperoxide that may be formed in the presence of said binary catalyst system and recovering a product of cyclohexanone and cyclohexanol in the above ratio.

REFERENCES:
patent: 2223494 (1946-12-01), Loder
patent: 2825742 (1958-03-01), Schueler et al.
patent: 2851496 (1958-09-01), Cates et al.
patent: 2938924 (1960-05-01), Simon et al.
patent: 3093686 (1963-06-01), Simon et al.
patent: 3530185 (1970-09-01), Pugi
patent: 3598869 (1971-09-01), Volpe et al.

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