| 简介 |
PROBLEM TO BE SOLVED : To provide an economic particulate material clarification material which increases a catching rate of PM with the stable melting in an exhaust gas temperature range of an internal combustion, at the same time increases further an area of contact surface with PM, and, particularly, enables the stable installation in an exhaust system of an automobile.
SOLUTION : The particulate material clarification material is composed of a soot trapping component containing at least one selected from silver carbonate, an alkali metal carbonate, an alkaline earth metal carbonate, a rare earth element carbonate, silver halide, an alkali metal halide, and an alkaline earth metal halide, and/or compound salt where two or more selected from them are compositely treated, which is supported on a solid carrier, and a soot clarification component containing at least one selected from silver nitrate, an alkali metal nitrate, an alkaline earth metal nitrate, and a rare earth element nitrate, and/or compound nitrate where two or more selected from them are compositely treated, which is supported on a solid carrier. The soot in PM is trapped in the soot trapping component 2, and the trapped soot is efficiently oxidized and purified by the soot clarification component 3 in the vicinity to become CO2 for discharge.
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