Oxygen → Cyclohexylbenzene hydroperoxide

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FIG. 1 is a flow diagram of a process for producing phenol and/or cyclohexanone according to a first example of the present application, in which a feedstock comprising cyclohexylbenzene is provided by line 102 to an oxidation reactor 106. A stream comprising oxygen, conveniently air, is also provided to the oxidation reactor 106 by way of line 104. Conditions within oxidation reactor 106 are such that cyclohexylbenzene in the feedstock is oxidized to form cyclohexylbenzene hydroperoxide. An oxidation catalyst, such as the heteroatom containing-compound N-hydroxyphthalimde (NHPI), may be also introduced to oxidation reactor 106, by means not shown in FIG. 1, to facilitate the oxidation reaction.

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