C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/583, 260/629
C07C 29/00 (2006.01) C07C 45/00 (2006.01) C07C 45/53 (2006.01)
Patent
CA 1049041
Abstract of the Disclosure A process for the preparation of cyclohexanones and/or cyclohexanols by catalytic hydrogenation of cyclohexyl hydroperoxides is disclosed. In the invented process use is made of a finely divided catalyst that is suspended in the reaction mixture and contains one or more noble metals from Group VIII of the Periodic System of Elements, preferably rhodium platinum and/or palladium. With the invented process a high reaction rate can be achieved already at a low reaction temperature and a hydrogen pressure, while the desired products are obtained in a high yield. Very little catalyst is needed for achieving a given rate of reaction. The invention permits advantageous application of catalysts with very high noble-metal concentrations. Favourable alcohol/ ketone ratios can be achieved. The invention also offers solutions for speci- fic problems which may occur in performing the invented process. Advantageous incorporation of the invented process into an overall process for the prepara- tion of cyclohexanols and/or cyclohexanones from a cyclohexane via a cyclohexyl hydroperoxide is disclosed.
186162
Thomas Andreas M. J.
Van de Moesdijk Cornelis G. M.
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