Catalysts for production of phenol and its derivatives
AssigneeMonsanto Company
InventorsAlexander Sergeevich Kharitonov, Gennady Ivanovich Panov, Galina Anatolievna Sheveleva, Larisa Vladimirovna Pirutko, Tatyana Pavlovna Voskresenskaya, Vladimir Ivanovich Sobolev
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Abstract
Zeolite catalysts useful for the production of phenol and its derivatives by oxidative hydroxylation of benzene and its derivatives by nitrous oxide, e.g. at temperatures of 225.degree.-450.degree. C., having substantially enhanced process characteristics resulting from hydrothermal treatment using a gas containing from about 3 to 100 mole percent water vapor, e.g. in nitrogen, at a temperature ranging from about 500.degree. to 1000.degree. C. Two hours of hydrothermal treatment has been shown to be effective.
Claims5
A method for the catalytic production of phenol or derivative thereof comprising reacting benzene or derivative thereof with nitrous oxide in the presence of a zeolite catalyst wherein, prior to said reaction, the catalyst performance has been enhanced by hydrothermal treatment with a gas comprising 3 to 100 mole percent water at a temperature of 350.degree. to 950.degree. C.
Dependencies are inferred from the claim text.