Zeolite catalyst for production of phenol and derivatives

Details Zeolite catalyst for production of phenol and derivatives Zeolite catalyst for production of phenol and derivatives

B - Operations, Transporting

01

J

B01J 29/06 (2006.01) B01J 29/40 (2006.01) B01J 29/46 (2006.01) B01J 37/10 (2006.01) C07C 37/60 (2006.01) C07C 39/02 (2006.01) C07C 39/27 (2006.01) C07C 201/12 (2006.01) C07C 205/22 (2006.01) B01J 29/072 (2006.01)

Patent

CA 2187649

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 225-450 °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 to 1000 °C. Two hours of hydrothermal treatment has been shown to be effective.

Catalyseurs zéolithiques utilisables dans la production de phénol et de ses dérivés par oxydo-hydroxylation du benzène et de ses dérivés à l'aide de l'oxyde nitreux, par exemple à des températures comprises entre 225 et 450 ~C, et présentant des caractéristiques de traitement améliorées dues à un traitement hydrothermique à l'aide d'un gaz renfermant de 3 à 100 % en mol environ de vapeur d'eau, par exemple dans de l'azote, et à une température comprise entre 500 et 1000 ~C environ. On a mis en évidence que deux heures de traitement hydrothermique sont efficaces.

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