Ferrisilicate analogs of ZSM-5 zeolite as catalysts for one- step oxidation of benzene to phenol

The role of iron in the catalytic properties of ZSM-5 ferrisilicate analogs in the oxidation of benzene to phenol by dinitrogen monoxide has been studied within a wide range of iron concentrations (from 0.003 to 4.8 wt.-% Fe 2O 3). The samples of the Fe-Si system with optimal iron content, as well a...

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Bibliographic Details
Published in:Applied catalysis. A, General General, 1993-05, Vol.98 (1), p.33-43
Main Authors: Kharitonov, A.S., Sheveleva, G.A., Panov, G.I., Sobolev, V.I., Paukshtis, Ye.A., Romannikov, V.N.
Format: Article
Language:English
Subjects:
acidity
benzene to phenol oxidation
FeZSM-5 zeolite
iron
mechanisms
nitrous oxide as oxidant
phenol
zeolites
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Summary:The role of iron in the catalytic properties of ZSM-5 ferrisilicate analogs in the oxidation of benzene to phenol by dinitrogen monoxide has been studied within a wide range of iron concentrations (from 0.003 to 4.8 wt.-% Fe 2O 3). The samples of the Fe-Si system with optimal iron content, as well as previously studied Fe-Al-Si samples of the same zeolite structure, were found to be far superior to known catalysts. A reaction mechanism is suggested, where the active form of the surface oxygen produced by dinitrogen monoxide decomposition is of key importance. Zeolite acidity was tested and its role in the catalytic activity is discussed.
ISSN:0926-860X
1873-3875
DOI:10.1016/0926-860X(93)85023-I