What is the powder in the three-way catalytic converter used for?

[StLyla]

The catalyst in the three-way catalytic converter consists of rare metals such as palladium and rhodium, which accelerate the chemical reactions of harmful emissions. However, its normal operation requires high temperatures, which is why the exhaust smell is very strong after a cold start—the exhaust temperature is low, and the three-way catalyst cannot function effectively. Here is more information about the three-way catalytic converter: 1. Introduction: The three-way catalytic converter is the most important external purification device installed in the automotive exhaust system. It 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. Structure: The exterior of the three-way catalytic converter is made of double-layered stainless steel plates in a cylindrical shape. The interlayer between the double-layered plates contains insulating material, such as asbestos fiber felt. Inside, a purification agent is placed between mesh partitions. The purification agent consists of a carrier and a catalyst.