Which outcome accelerates initial reaction rate when platinum catalytic converter heats to operating temperature?

💡 Explanation

When the platinum catalyst heats up, the increased kinetic energy enhances physisorption by van der Waals force, specifically, a higher reactant adsorption rate due to increased thermal mobility. Therefore increased reactant adsorption is observed, rather than decreased surface area, or enhanced desorption/metal oxidation, due to catalyst condition differences.

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