Deactivation and degree of oxidation of a cobalt oxide catalyst during ammonia oxidation
- Jan Petryk
During ammonia oxidation the catalyst - Co3O4 - undergoes reduction to CoO. It was found that the reduction degree of the catalyst is higher at the front of the bed and also higher at the near surface of the pellets. Thus, the lower the oxidation degree of ammonia in the gas phase above a particular part of the catalyst, the higher is the reduction degree of the catalyst. Despite the progress in the catalyst reduction, the effects of its deactivation are observed only after a certain period of exploitation. This is suggested to result from the strong influence of external diffusion on the course of ammonia oxidation.
- Record ID
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- Przemysł Chemiczny, ISSN 0033-2496
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- (en) English
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- : 2006 = 0.429 (2) - 2007=0.159 (5)
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