| abstract |
(57) Abstract: By preventing poisoning of a carrier and a catalytically active component due to sulfur oxides in exhaust gas from a diesel engine, for long-life exhaust gas purification excellent in poisoning resistance. An object of the present invention is to provide a catalyst, an exhaust gas purifying apparatus using the same, and an exhaust gas purifying system. A heat-resistant honeycomb structure 1, a carrier layer made of a porous inorganic material 2 supported on an exhaust gas purification surface of the heat-resistant honeycomb structure 1, silicon formed on the upper surface of the carrier layer, and / or Oxide film 3 made of titanium oxide And an active catalyst component 4 made of any one or more of a noble metal, a base metal and a metal oxide. |