| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas purifying catalyst which can reduce an NO<SB>x</SB>emission in a transient phase and a cold start phase. <P>SOLUTION: This exhaust gas purifying catalyst contains an oxygen storing material with an average particle diameter ranging from 1 to 1,000 nm. <P>COPYRIGHT: (C)2008,JPO&INPIT |
