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oa Redistribution of Platinum Metals within an Ammonia Oxidation Plant
Catalyst and Catchment Systems Investigated
- Source: Platinum Metals Review, Volume 34, Issue 2, Apr 1990, p. 62 - 70
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- 01 Jan 1990
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Abstract
The powder recovered from the catalyst and catchment systems in a high pressure ammonia oxidation plant has been studied by a variety of analytical means. From this investigation it can be concluded that the powder results from the in-depth degradation of the platinum-rhodium catalyst gauzes and the palladium-copper catchment gauzes, together with impurities arising from the reactor constructional materials. The results indicate two different transport mechanisms, and the study may assist in the development of more stable platinum-based catalysts and catchment packages for nitric acid plants.
© Johnson Matthey