| 摘要 |
PURPOSE:To prevent the formation of the solid solution of Rh with Al2O3, by adhering a slurry mixture of a TiO2 powder allowed to support a catalytic metal containing Rh and an Al2O3 powder allowed to support a catalytic metal containing no Rh to a carrier before baking. CONSTITUTION:A first catalytic metal containing at least Rh is supported by a TiO2 powder and, separately, a second catalytic metal containing no Rh is supported by an Al2O3 powder. Next, the TiO2 powder supporting the first catalytic metal and the Al2O3 powder supporting the second catalytic metal are mixed to prepare a slurry which is, in turn, adhered to the surface of a catalyst carrier base material. This catalyst carrier base material having the slurry adhered thereto is baked to obtain a catalyst for purifying exhaust gas. As the aforementioned catalytic metals, Rh, Pt, Pd, Ir, Ru, Os, Cr, Ni, V, Cu, Co and Mn can be used alone or in a mixed state of plural metals. |
