Which outcome occurs when a catalytic converter operates at excessively lean air-fuel mixture?

💡 Explanation

When lean conditions occur, excess oxygen promotes sulfur oxidation to SO2, which strongly binds to the catalytic sites, causing sulfur poisoning hindering catalyst functionality because chemisorption occurs. Therefore, sulfur poisoning results, rather than NOx conversion, methane slip, or thermal runaway that require rich mixtures or uncontrolled exotherms.

• Which consequence results when an astronaut exceeds g-force limits?
• Which outcome occurs when insufficient binding energy exists within nucleons?
• Which consequence results when a PID controller's integral term saturates?
• Which outcome occurs when an industrial ammonia synthesis reactor operates far from optimal pressure?
• Which consequence results when applying torsional stress to photoelastic materials placed between crossed polarizers?
• Which outcome arises when applying a high electric field to an ionic crystal near its dielectric breakdown strength?