Highly Active Monolith Catalysts of LaKCoO3 Perovskite-type Complex Oxide on Alumina-washcoated Diesel Particulate Filter and the Catalytic Performances for the Combustion of Soot

LaKCoO3/ɤ-Al2O3/Cordierite Monolith Catalyst Give Super Activity for Soot Oxidation and its Coating Stability and Catalytic Performance Are much Better than Those of the Sample Without Alumina Washcoat.