| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas treatment catalyst which has a high NO<SB>X</SB>removal performance, has excellent heat resistance and poisoning resistance and hardly causes a catalyst deterioration due to sintering. <P>SOLUTION: As for the catalyst for treating waste gas including nitrogen oxide, the catalyst is constituted so that noble metal is deposited on a carrier component consisting of an inorganic compound and the carrier component contains the inorganic compound comprising a high melting point oxide as sintering suppressing material of 1 to 90 wt.%. The producing method of the exhaust treatment catalyst comprises a process of immersing at least one kind of the inorganic oxide into a raw material solution of the high melting oxide, sintering the solution after mixing the solution and preparing the inorganic compound, a process of sizing the carrier component containing the inorganic compound, a process of mixing the carrier component after the sizing with an inorganic binder etc. and, thereafter, grinding the mixture and preparing a slurry and a process of washcoating the slurry over the base material. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
