Ceramic Catalyst For Nox Oxidation

Selective catalytic reduction scr is a means of converting nitrogen oxides also referred to as no x with the aid of a catalyst into diatomic nitrogen n 2 and water h 2 o a reductant typically anhydrous ammonia aqueous ammonia or urea solution is added to a stream of flue or exhaust gas and is adsorbed citation needed onto a catalyst as the reaction drives toward completion carbon.

Ceramic catalyst for nox oxidation.

To remove nox catalytic ceramic filter elements are manufactured with nano bits of scr selective catalytic reduction catalyst embedded in the walls about 3 4 inch 20 mm thick. Oxidation catalysts are effec tive at eliminating nonmethane hydrocarbon ch 2 o and co emissions. For no x removal by selective catalytic reduction scr a catalytic coating based on a tio 2 v 2 o 5 wo 3 catalyst system was developed on a ceramic filter element. Honeycomb scr catalyst 1 scr technology is a recation at use of the denitration catalyst at a certain temperature 270 400 degree that nox in the flue gas mixed with ammonia gas from the reducing agent supply the system after the occurence of the selective catalytic reduction reaction of nitrogen and water thereby reducing nox emissions and reducing smoke pollution to the environment.

The development of a catalytically active filter element for combined particle separation and no x removal or voc total oxidation respectively is presented. Different tio 2 sols of tailor made mean particle size between 40. Automotive honeycomb ceramic catalyst is used for straight ceramic catalyst substrate for engine exhaust gas purification system. For the diesel on and off road segment we offer a variety of pre catalysts for diesel particulate filters dpf systems.

These filters achieve nox removal with over 90 efficiency. An example of nscr is with engine emission control such as automobile catalysts. Catalytic oxidation is one of the many options you have when looking at air pollution control systems at your facility. The catalysts can be designed to remove co hc and for rich operation in gas engines which also includes nox.

Tuning the engine to have a stoichiometric balance of co hydrocarbon and nox compounds allows a 3 way catalyst typically a mixture of pt pd rh to simultaneously remove all three target compounds nox co and the hc. Liqtech supplies oxidation catalysts in cordierite or metal for both automotive and non automotive applications. However they are incapable of reducing no x to n 2 and o 2 as occurs in three way catalysts because reduction reactions will not take place under the lean conditions at which an oxidation catalyst is used.