Oxidation of cyclohexylbenzene

摘要

In a process for oxidizing a feed comprising cyclohexylbenzene, the feed is contacted with oxygen and an oxidation catalyst in a plurality of reaction zones connected in series, the contacting being conducted under conditions being effective to oxidize part of the cyclohexylbenzene in the feed to cyclohexylbenzene hydroperoxide in each reaction zone. At least one of the plurality of reaction zones has a reaction condition that is different from another of the plurality of reaction zones. The different reaction conditions may include one or more of (a) a progressively decreasing temperature and (b) a progressively increasing oxidation catalyst concentration as the feed flows from one reaction zone to subsequent reaction zones in the series.

主权项

1. A process for oxidizing a feed comprising cyclohexylbenzene, the process comprising:
contacting the feed with oxygen and an oxidation catalyst in a plurality of reaction zones connected in series, wherein the contacting in at least two of the plurality of reaction zones is conducted under conditions effective to oxidize a portion of the cyclohexylbenzene to cyclohexylbenzene hydroperoxide, and at least one of the plurality of reaction zones has a different reaction condition than another of the plurality of reaction zones; wherein the different reaction condition includes both: (i) a temperature decrease and (ii) an increase in oxidation catalyst concentration in the feed from at least one of the plurality of reaction zones to the next of the plurality of reaction zones in the series.