Oxidation Catalyst (DOC) is an essential component in the emission control system of modern diesel engines. The DOC's primary function is to reduce nitrogen oxides (NOx) and other harmful gases in diesel engine exhaust emissions. This is achieved by catalyzing the oxidation of carbon monoxide (CO) and hydrocarbons (HC) in the exhaust stream with oxygen (O2), producing harmless carbon dioxide (CO2) and water vapor (H2O).

The DOC is typically constructed of a ceramic or metallic substrate coated with a catalyst material such as platinum, palladium. When diesel engine exhaust passes through the DOC, CO and HC are oxidized by the catalyst, leading to their conversion to CO2 and H2O. In addition, the DOC can also facilitate the conversion of NO to NO2, which can then be further reduced by downstream technologies such as Selective Catalytic Reduction (SCR).

The chemical reactions that take place in the DOC can be represented as follows:

*. 2CO + O2 → 2CO2

*. CxHy + (x+y/4)O2 → xCO2 + (y/2)H2O

*. 2NO + 2CO → N2 + 2CO2

*. 2NO + 2H2 → N2 + 2H2O

Diesel Oxidation Catalyst (DOC) is a critical technology in modern diesel engine emission control systems. The catalyst materials used in DOCs promote the oxidation of CO and HC in diesel engine exhaust, leading to the conversion of harmful pollutants to benign byproducts. In addition, the DOC can also promote the conversion of NO to NO2, further reducing harmful emissions.

TES utilizes advanced nanomaterial technology to produce high-performance DOCs that meet the most stringent emission standards while providing reliable, long-lasting performance. In addition to catalysts, TES also provides DOC canning services. Our canned DOCs also come with a choice of expansion or non-expansion mat as a cushion between the substrate and the housing, which can be tailored to meet specific customer requirements.