What are the three elements in an automotive three-way catalyst?
1 Answers
Three-way refers to the three precious metals: platinum (Pt), rhodium (Rh), and palladium (Pd), hence the name three-way. Relevant explanations are as follows: 1. Introduction: The three-way catalytic converter is the most important external purification device installed in a vehicle's exhaust system. The three-way catalyst converts harmful gases such as CO, HC, and NOx emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. 2. Supplementary explanation: The three-way catalytic converter also contains certain purifying agents. When toxic gases pass through the exhaust pipe, the three-way catalytic converter releases these purifying agents onto the carrier, forming a catalytic effect to purify the toxic gases.