A three-way catalytic reactor is similar to a muffler. Its outer surface is made of double-layer stainless steel sheets into a cylindrical shape. The insulation material – asbestos fiber mat is installed in the double-layer thin plate sandwich. The interior contains purifiers between mesh partitions. The purifier consists of carrier and catalyst.
The carrier is generally made of aluminum oxide, and its shapes include spherical, polygonal and mesh partitions. Purifiers actually act as catalysts, also known as catalysts. Catalysts use metals platinum, rhodium, and palladium. Spray one of them on the carrier to form a purifier.