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2023
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Several Causes of Deactivation of Hydrogenation Catalyst
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【Summary】Hydrogenation catalysts are affected by various factors during use, and will lose their activity sharply or slowly. Today, Xunkai Catalysis briefly introduces several reasons for the deactivation of hydrogenation catalysts. 1, permanent deactivation, hydrogenation catalyst active components by the role of some foreign components (poisoning) and lose activity, often permanent deactivation. Most of these foreign components are chemically reacted with the active components of the catalyst or ion exchange, resulting in changes in the active components. Deactivation of catalyst poisoning often manifests itself as a rapid decline in activity. Loss of active components due to wear or sublimation during use also leads to permanent deactivation, which is often difficult to recover simply.
Hydrogenation catalysts are affected by various factors during use, and will lose their activity sharply or slowly. Today, Xunkai Catalysis briefly introduces several reasons for the deactivation of hydrogenation catalysts.
1, permanent deactivation, hydrogenation catalyst active components by the role of some foreign components (poisoning) and lose activity, often permanent deactivation. Most of these foreign components are chemically reacted with the active components of the catalyst or ion exchange, resulting in changes in the active components. Deactivation of catalyst poisoning often manifests itself as a rapid decline in activity. Loss of active components due to wear or sublimation during use also leads to permanent deactivation, which is often difficult to recover simply.
2. The active component is covered and gradually inactivated, which is non-permanent inactivation. For example, the carbon deposition generated during the reaction process covers the active component or blocks the pores of the catalyst, so that the reactant cannot contact the active component. These coverings can be removed by certain methods, such as carbon deposition and deactivation can be revived by burning carbon regeneration.
3. Wrong operation leads to deactivation of hydrogenation catalyst, such as too high reaction temperature and severe pressure fluctuation, which leads to confusion or crushing of catalyst bed. Such deactivation cannot be recovered.
You can also see from the above information that in some cases the deactivation of the hydrogenation catalyst can be recovered but some cannot be recovered, so you should avoid the above situations in advance when using it.
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