| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress particulate growth of noble metal particles by suppressing movement of the supported noble metal particles. <P>SOLUTION: The noble metal is supported at least in spaces of a catalyst carrier composed of α-alumina having a multi-layered structure having spaces between the layers. Even at high temperature of 1,200°C, α-alumina is stable without causing sintering. The noble metal supported in the spaces between the layers of the catalyst carrier is in a sandwiched state between the layers, being restrained from moving even at a high temperature. <P>COPYRIGHT: (C)2004,JPO |
