| abstract |
PROBLEM TO BE SOLVED: To provide an exhaust gas purifying catalyst having excellent low-temperature activity, effectively exhibiting rhodium catalytic activity, and economically realizing good purification performance. thing. SOLUTION: As an exhaust gas purifying catalyst, alumina containing rhodium and platinum in advance, a zirconium-based composite oxide carrying rhodium and platinum in advance, and a cerium-based composite oxide carrying platinum in advance are contained. |