Which mechanism minimizes the catalyst poisoning when sulfur dioxide reacts with oxygen in a catalytic converter?

💡 Explanation

When sulfur dioxide reacts with oxygen, maintaining minimum operating temperature ensures that sulfur species remain oxidized, preventing them from strongly binding to and poisoning the catalyst sites. Therefore maintaining the operating temperature minimizes the poisoning, rather than using sacrificial substrates or stoichiometric ratios which addresses different catalyst failure modes.

• Which effect occurs when the working fluid in closed-loop Rankine cycle leaks downstream of turbines?
• Which outcome occurs when elevated temperature alters enzymatic geometry?
• Which risk increases when heavy water acts without control rods as the moderator in a nuclear fission reactor?
• Which risk increases when aromatic molecules in OLED displays degrade?
• Which outcome occurs when a Class 2 ceramic capacitor experiences reverse polarity beyond its rated voltage?
• Which outcome occurs when compressing gaseous silane (SiH₄) beyond its critical point?