Is There a Market for Diesel Three-Way Catalytic Converters?

1 Answers
VanZachary
07/29/25 11:34pm
Diesel three-way catalytic converters are indeed recycled. Since these converters contain precious metals, repair shops collect them and sell them to upstream recyclers. After refining, a certain amount of precious metals can be extracted from the catalytic converters, giving them high economic value. Driven by profit, a recycling industry chain has naturally emerged. Below is some relevant information about three-way catalytic converters: Appearance: A three-way catalytic converter looks like a metal can, but inside it has a "substrate" designed to purify exhaust gases. This honeycomb-shaped ceramic substrate is coated with a precious metal slurry, primarily composed of platinum, rhodium, and palladium. Exhaust purification function: The precious metals act as catalysts, reducing harmful emissions like HC and CO into water and CO2, while breaking down NOx into nitrogen and oxygen. This is the exhaust purification function of a three-way catalytic converter.
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