tell me the mechanism about catalyst hydrogenation

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∻Solution∻ ‖ 1 ⋮ **Catalyst Introduction**: A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. ‖ ‖ 2 ⋮ **Adsorption of Hydrogen**: Hydrogen molecules ($H_2$) are adsorbed onto the surface of the catalyst, where they dissociate into hydrogen atoms. ‖ ‖ 3 ⋮ **Adsorption of the Substrate**: The substrate, typically an alkene or alkyne, is also adsorbed onto the catalyst's surface, bringing it into close proximity with the dissociated hydrogen atoms. ‖ ‖ 4 ⋮ **Hydrogenation Step**: The hydrogen atoms add to the multiple bond of the substrate, converting it into a single bond and forming the saturated product. ‖ ‖ 5 ⋮ **Desorption of the Product**: The saturated product is released from the catalyst surface, regenerating the active sites on the catalyst for further reaction. ‖ ∻Answer∻ ⚹ The mechanism of catalyst hydrogenation involves the adsorption of hydrogen and the substrate onto the catalyst, the hydrogenation step where hydrogen atoms add to the substrate's multiple bond, and the desorption of the product. ⚹ ∻Key Concept∻ ⚹ Catalyst in hydrogenation ⚹ ∻Explanation∻ ⚹ A catalyst provides a surface for hydrogen and the substrate to adsorb, facilitating the addition of hydrogen atoms to the substrate's multiple bond and increasing the reaction rate without being consumed. ⚹◊What is the role of a catalyst in the hydrogenation process?⍭ Generate me a similar question◊

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