| 摘要 |
PURPOSE:To efficiently remove combustible particles by forming a porous layer of composite oxide represented by general formula A1-xA'xB1-yB'yO3 (wherein A is a rare earth metal element, and B and B' are Cr, Mn, Fe, Co or Cu) on the surface of carrier. CONSTITUTION:A porous layer of perovskite composite oxide represented by general formula A1-xA'xB1-yB'yO3 (wherein A is a rare earth metal element, A' is an alkaline earth element, x is 0<=x<=1 and y is 0<=y<=1) such as La0.8Sr0.2 CoO3 is formed to the surface of a carrier having filter function and a particulate in exhaust gas is collected by the carrier. By heating this carrier, the particulate is burnt and the carrier is regenerated. |
