| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst for exhaust gas purification in which HC poisoning of palladium hardly occurs and low temperature catalytic activity is enhanced. <P>SOLUTION: The catalyst for exhaust gas purification includes: a porous carrier 40 and palladium 50 supported by the porous carrier 40. The porous carrier 40 includes an alumina carrier 42 comprising alumina, and a CZ carrier 44 comprising a ceria-zirconia complex oxide. Barium is added to each of the alumina carrier 42 and the CZ carrier 44. Here, the amount of barium added to the alumina carrier 42 corresponds to 10-15 mass% relative to the total mass of the alumina carrier 42 excluding the barium, and the amount of barium added to the CZ carrier 44 corresponds to 5-10 mass% relative to the total mass of the CZ carrier 44 excluding the barium. <P>COPYRIGHT: (C)2013,JPO&INPIT |
