Which kinetic effect occurs within catalytic converters when exhaust gas temperature dramatically decreases?

💡 Explanation

When temperature decreases, catalytic activity diminishes because reaction rates are exponentially dependent on temperature (Arrhenius equation), reducing reactant adsorption and conversion. Therefore, reduced adsorption rates occur, rather than poisoning which requires specific contaminants, increased efficiency conflicting with kinetic slowdown, or thermal runaway requiring elevated temperatures.

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