CATALYST FOR THE TRANSFORMATION OF HYDROCARBONS AND THE REDUCTION OF NITROGEN OXIDES, METHOD FOR PRODUCING SAID CATALYST AND UTILIZATION OF THE CATALYST FOR THE CATALYSIS OF EXHAUST GASES FROM DIESEL ENGINES

摘要

A catalyst which can be used to transform hydrocarbons and gases and to reduce nitrogen oxides includes as essential components of the active substance thorium oxide, in addition to LaCoO3. This catalyst includes as a "wash coat" oxidized ceramics and spinels of magnesium oxide, aluminum, titanium and zirkon, enriched with ceroxide and lanthanum oxide, as well as LaCoO3 prepared beforehand. and dissolved under acidic conditions. The body formed in the absence of the active substance LaCoO3 is used as a combustion catalyst at high temperatures, for example during the production of heat from coal without the release of nitrogen oxides. A method and a device use the catalyst for the post combustion of diesel engine exhaust gases in eccentric layers of bulk catalyst which adsorb soot particles, especially during the start-up phase, as well as in a post combustion catalyst. honeycomb for post combustion and reduction of nitrogen oxides in the engine efficiency phase. The post combustion device, by the arrangement of the current flow, also serves as a silencer.