| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst for cleaning exhaust gas of which the cleaning performance and the heat-resisting performance are improved compared with conventional techniques by highly dispersing materials to be carried onto a carrier. <P>SOLUTION: The catalyst is provided with alumina, a perovskite-type oxide carried by the alumina and expressed by LnAlO<SB>3</SB>(Ln is a rare earth metal), and a noble metal carried on the oxide, and is made by a method through a process of allowing a solution containing catalyst components to penetrate into the pores of the alumina and fixing them to pore walls; and the perovskite-type oxide has a specific surface area of 5 m<SP>2</SP>/g or more. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
