Staged catalyst process for cyclohexyl hydroperoxide decompositi

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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568835, C07C 4553

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active

044827466

ABSTRACT:
An improvement in a process for decomposing cyclohexyl hydroperoxide to cyclohexanone and cyclohexanol is provided. According to the improved process, a reaction mixture comprising cyclohexane and cyclohexyl hydroperoxide is contacted with two catalyst compositions sequentially for a preselected reaction period, such that the reaction mixture is contacted with a catalytic amount of the first of said catalyst compositions only for about 10 to about 80 percent of the reaction period, and contacted with a catalytic amount of a mixture of the first and second catalyst compositions for the remainder of the preselected reaction time. The first catalyst composition of the invention is a cyclohexane-soluble chromium organic acid salt, and the second catalyst composition is a cobalt, iron, or manganese complex of a 1,3-bis(2-pyridylimino)isoindoline.

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