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← ScienceWhich process limits the hydrogenation rate using transition metal catalysts?
A)Surface reaction-controlled Langmuir-Hinshelwood mechanism✓
B)Mass transport into the catalyst particle
C)Heat dissipation during hydrogen adsorption
D)Catalyst poisoning blocking surface sites
💡 Explanation
The Surface reaction-controlled Langmuir-Hinshelwood mechanism limits the reaction rate because adsorption and reaction steps determine overall speed; therefore, improving these steps accelerates hydrogenation, rather than limitations in mass transport or heat dissipation.
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