CATALYST FOR EXHAUST GAS PURIFICATION AND METHOD FOR PRODUCING THE SAME

摘要

Disclosed is a catalyst for exhaust gas purification wherein Rh is supported by a catalyst carrier for Rh. The catalyst for exhaust gas purification is produced by using a catalyst component A having a CO<SUB>2</SUB> adsorption per unit weight of 25-60 µmol g<SUP>-1</SUP> and a CO<SUB>2</SUB> adsorption per unit specific surface area of 0.2-2.3 µmol m<SUP>-2</SUP> g<SUP>1</SUP>, a catalyst component B and a binder. The catalyst for exhaust gas purification has a CO<SUB>2</SUB> adsorption per unit weight of 18-60 µmol g<SUP>-1</SUP> and a CO<SUB>2</SUB> adsorption per unit specific surface area of 0.2-2.5µmol m<SUP>-2</SUP> g<SUP>1</SUP>, and the ratio of the CO<SUB>2</SUB> adsorption per unit weight of the catalyst to the CO<SUB>2</SUB> adsorption per unit weight of the catalyst component A [namely, (CO<SUB>2</SUB> adsorption of the catalyst/CO<SUB>2</SUB> adsorption of the catalyst component A) OE100] is not less than 75%.