EXHAUST GAS PURIFYING CATALYST AND METHOD FOR PRODUCING SAME, AND EXHAUST GAS PURIFICATION DEVICE U

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Provided are a novel exhaust gas purifying catalyst, a method for producing same, and an exhaust gas purification device using same, which are capable of maintaining catalytic activity of a precious metal at a higher level than compared with conventional exhaust gas purifying catalysts. The present invention relates to an exhaust gas purifying catalyst (10) having a first carrier particle (1), a second carrier particle (2), and a precious metal catalyst particle (3) carried on the first and second carrier particles, wherein : the first carrier particle (1) contains a rare-earth oxide other than ceria and at least one metal oxide selected from the group consisting of silica, alumina, ceria, zirconia, and titania; the second carrier particle (2) contains a rare-earth oxide other than ceria; and the contained amount of the rare-earth oxide in the second carrier particle (2) is higher than the contained amount of the rare-earth oxide in the first carrier particle (1).