Process for preparing cycloalkanones and cycloalkanols
AssigneeStamicarbon B.V.
InventorsWillem Voskuil, Joseph J. M. VAN DER Donck
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Abstract
Cycloalkanones and cycloalkanols can be prepared by conversion of cycloalkylhydroperoxides in solution in a suitable solvent, under the influence of a solid catalyst, Solution and catalyst form a heterogeneous system. For this purpose, a number of catalysts have been proposed, but the known processes have serious draw backs with respect to efficiency of the process, catalyst cost and/or alcohol to ketone ratio obtained. According to the invention, cycloalkanones and cycloalkanols are prepared by conversion of cycloalkylhydroperoxides having 5-12 carbon atoms in the ring under the influence of a heterogeneous catalyst comprising copper oxide, at a temperature below 160.degree.C. Preferably, copper - chromium - oxide is applied as a catalyst.
Claims7
In a process for the preparation of a corresponding cycloalkanone and cycloalkanol by heterogeneous catalytic liquid phase conversion of a cycloalkylhydroperoxide, having 5 to 12 carbon atoms in the ring, the improvement which comprises using a heterogeneous catalyst comprising copper (II)-chromiumoxide in a cycloalkane or aromatic hydrocarbon distributing agent at a temperature of at least 30.degree. C. and below 160.degree. C.
Dependencies are inferred from the claim text.