| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a metal particle carrying catalyst, in particular, a Pd-Cu composite particle catalyst capable of exhibiting excellent surface activity, e.g., exhibiting excellent effect as a catalyst for nitrate nitrogen. <P>SOLUTION: The metal particle carrying catalyst includes an inorganic carrier substance carrying metal particles comprising at least one of metal selected from a group consisting of group IV transition metal elements, group V transition metal elements, platinum and gold. Part of the metal particles are polyhedral metal particles having a polyhedral structure. In this metal particle carrying catalyst, at least part of the carrying metal particles has the polyhedral structure, especially, has a plane having one side of 10-100 nm, and further, the metal particles having this polyhedral structure exists 10<SP>2</SP>-10<SP>17</SP>pieces per unit area (m<SP>2</SP>) on an inorganic based support substance. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
