Methods for preparing high temperature water gas shifting catalyst, catalyst and process for reducing carbon monoxide
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United States of America Patent
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Jun 20, 2023
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Oct 7, 2021
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Oct 8, 2020
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Abstract
The present invention deals with catalysts for the conversion of CO by the shifting reaction of high temperature water gas, free from chromium and iron, consisting of alumina promoted by potassium, by zinc and copper oxides and in a second embodiment also additionally nickel. The catalysts thus prepared maintain high CO conversion activity, not having the environmental limitations or operating limitations with low excess steam in the process, which exist for catalysts in accordance with the state of the art. Such catalysts are used in the hydrogen or synthesis gas production process by the steam reforming of hydrocarbons, allow the use of low steam/carbon ratios in the process, exhibiting high activity and stability to thermal deactivation and lower environmental restrictions for production, storage, use and disposal, than the industrially used catalysts based on iron, chromium, and copper oxides.
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