Process for producing phenol and/or cyclohexanone
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United States of America Patent
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Oct 18, 2016
Grant Date -
Apr 21, 2016
app pub date -
Jun 4, 2014
filing date -
Jun 30, 2011
priority date (Note) -
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Abstract
In a process for producing phenol and/or cyclohexanone, cyclohexylbenzene is contacted with an oxygen-containing gas in the presence of an oxidation catalyst under oxidation conditions effective to produce an oxidation effluent comprising cyclohexylbenzene hydroperoxide. At least a portion of the oxidation effluent is then subjected to a concentrating step to produce a cleavage feed having a higher concentration of cyclohexylbenzene hydroperoxide than the oxidation effluent. A cleavage reaction mixture comprising the cleavage feed is then contacted with a solid acid catalyst in a cleavage reaction zone under conditions effective to produce a cleavage product comprising phenol and cyclohexanone.
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