Which mechanism limits catalytic converter efficiency as internal temperature decreases during vehicle idling?

💡 Explanation

When the catalytic converter temperature decreases, the reaction rates on its catalyst surface slow down because reaction rate exponentially increases with temp via the Arrhenius equation, reducing its primary function. Therefore decreased surface reaction rate occurs, rather than catalyst poisoning, diminished oxygen storage, or thermal degradation, which depend on additional factors.

• Which risk increases when a chiller's refrigerant feed contains non-condensable gases?
• Which mechanical impact results when a stationary object suddenly gains relativistic mass?
• Which mechanism causes electron mobility saturation within gallium nitride crystals?
• Which effect occurs when a strong external magnetic field is applied perpendicular to a Hall effect sensor?
• Which electronic configuration causes phosphorescence in organic molecules?
• Which failure results when sodium chloride experiences hydrolytic cleavage?