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Posted 3 months ago
tell me the mechanism about catalyst hydrogenation
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Answer from Sia
Posted 3 months ago
Catalyst Introduction: A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
Adsorption of Hydrogen: Hydrogen molecules (H2H_2) are adsorbed onto the surface of the catalyst, where they dissociate into hydrogen atoms
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
Hydrogenation Step: The hydrogen atoms add to the multiple bond of the substrate, converting it into a single bond and forming the saturated product
Desorption of the Product: The saturated product is released from the catalyst surface, regenerating the active sites on the catalyst for further reaction
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
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.

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