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WHAT IS CATALYTIC CONVERTER? CAT-CON

Do you know about Catalytic converter or known as cat-con? The function and removal effect? Lets learn a bit. It is a device to clean exhaust air which converts CO dangerous gas to CO2.

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It is mounted between your exhaust extractor and exhaust piping. Removing the cat-con will increase engine performance and reducing fuel consumption because it produces restriction to your exhaust flow.
However the removal will results more dangerous toxic gases released from your car. The exhaust shop will buy the cat-con at around rm50 if you want to remove it.

The catalytic converter consists of several components:The catalyst core, or substrate. For automotive catalytic converters, the core is usually a ceramic monolith with a honeycomb structure. Metallic foil monoliths made of FeCrAl are used in some applications. This is partially a cost issue.

Ceramic cores are inexpensive when manufactured in large quantities. Metallic cores are less expensive to build in small production runs. Either material is designed to provide a high surface area to support the catalyst washcoat, and therefore is often called a “catalyst support”.

The cordierite ceramic substrate used in most catalytic converters was invented by Rodney Bagley, Irwin Lachman and Ronald Lewisat Corning Glass, for which they were inducted into the National Inventors Hall of Fame in 2002.[citation needed]The washcoat. A washcoat is a carrier for the catalytic materials and is used to disperse the materials over a high surface area. Aluminum oxide, Titanium dioxide,Silicon dioxide, or a mixture of silica and alumina can be used.

The catalytic materials are suspended in the washcoat prior to applying to the core. Washcoat materials are selected to form a rough, irregular surface, which greatly increases the surface area compared to the smooth surface of the bare substrate.

This maximizes the catalytically active surface available to react with the engine exhaust.The catalyst itself is most often a precious metal.

Platinum is the most active catalyst and is widely used, but is not suitable for all applications because of unwanted additional reactions[vague] and high cost. Palladium and rhodium are two other precious metals used. Rhodium is used as a reduction catalyst, palladium is used as an oxidation catalysts, and platinum is used both for reduction and oxidation.

Cerium, iron, manganese and nickel are also used, although each has its own limitations. Nickel is not legal for use in the European Union (because of its reaction with carbon monoxide into nickel tetracarbonyl). Copper can be used everywhere except North America,[clarification needed] where its use is illegal because of the formation of dioxin.

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