The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 1997
Filed:
Feb. 28, 1996
Alexander Sergeevich Kharitonov, Novosibirsk, RU;
Gennady Ivanovich Panov, Novosibirsk, RU;
Galina Anatolievna Sheveleva, Novosibirsk, RU;
Larisa Vladimirovna Pirutko, Novosibirsk, RU;
Tatyana Pavlovna Voskresenskaya, Novosibirsk, RU;
Vladimir Ivanovich Sobolev, Novosibirsk, RU;
Monsanto Company, St. Louis, MO (US);
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.