Abstract: A catalyzed particulate filter may include at least one inlet channel extending in a longitudinal direction, and having a first end into which fluid flows and a second end which is blocked; at least one outlet channel extending in a longitudinal direction, and having a first end which is blocked and a second end through which the fluid flows out; at least one wall that defines the boundary between adjacent inlet and outlet channels and that extends in a longitudinal direction; and at least one support positioned within at least one of the at least one inlet channel and the at least one outlet channel.

Abstract: A catalyzed particulate filter that includes: at least one inlet channel having one end into which a fluid flows and the other end which is plugged, and extending in a longitudinal direction; at least one outlet channel having one end which is plugged and the other end into which the fluid flows, and extending in the longitudinal direction; at least porous wall defining a boundary between the inlet channel and the outlet channel which are neighboring to each other and extending in the longitudinal direction; and a support coated with a catalyst thereon.

Abstract: A catalyzed particulate filter that includes: at least one inlet channel extending in a longitudinal direction, one end of which lets fluid in, and the other end of which is blocked; at least one outlet channel extending in the longitudinal direction, one end of which is blocked and the other end of which lets the fluid out; at least one porous wall that defines the boundary between neighboring inlet and outlet channels and that extends in the longitudinal direction; and a support with a catalyst coating thereon.

Abstract: A diesel engine exhaust gas treatment system with enhanced nitrogen oxide purification performance includes a nitrogen oxide adsorption part nitrogen adsorbing oxide (NOx) at a temperature of less than 200° C. and desorbing the nitrogen dioxide (NO2) at a temperature of 200° C. or more; and a nitrogen oxide purification part disposed at a lower side of the nitrogen oxide adsorption part and purifying the nitrogen oxide (NOx).

Abstract: A preparation method of perovskite catalyst, represented by the following Chemical Formula 1: LaxAg(1-x)MnO3 (0.1?x?0.9), includes the steps of 1) preparing a metal precursor solution including a lanthanum metal precursor, a manganese metal precursor and a silver metal precursor, 2) adding maleic or citric acid to the metal precursor solution, 3) drying the mixture separately several times with sequentially elevating the temperature in the range of 160 to 210° C., and 4) calcining the dried mixture at 600 to 900° C. for 3 hours to 7 hours.

Abstract: A supported catalyst for reduction reaction of nitrogen oxides includes a support and an silver (Ag)-based compound and aluminum fluoride which are immobilized in the support. A method for preparing the supported catalyst for reduction reaction of nitrogen oxides includes an impregnation step wherein aluminum fluoride, a hydrate or a salt thereof, and a silver (Ag)-based compound or a hydrate thereof are reacted with a support and a step of calcining the support. Nitrogen oxides in exhaust gas are removed by reacting with a reducing agent, in the presence of the supported catalyst for reduction reaction of nitrogen oxides. Wherein, the supported catalyst has an excellent nitrogen oxide removal efficiency at a practical exhaustion temperature of 270 to 400° C.

Abstract: A method of reducing nitrogen oxide includes a process of injecting a reductant including an amine compound and an exhaust gas including nitrogen oxide into a catalyst system including a silver alumina (Ag/Al2O3) catalyst.

Abstract: A supported catalyst for reduction reaction of nitrogen oxides includes a support and an silver (Ag)-based compound and aluminum fluoride which are immobilized in the support. A method for preparing the supported catalyst for reduction reaction of nitrogen oxides includes an impregnation step wherein aluminum fluoride, a hydrate or a salt thereof, and a silver (Ag)-based compound or a hydrate thereof are reacted with a support and a step of calcining the support. Nitrogen oxides in exhaust gas are removed by reacting with a reducing agent, in the presence of the supported catalyst for reduction reaction of nitrogen oxides. Wherein, the supported catalyst has an excellent nitrogen oxide removal efficiency at a practical exhaustion temperature of 270 to 400° C.