abstract |
(57) [Abstract] [Purpose] It is possible to improve NOx purification performance in a lean atmosphere, which was not active with conventional catalysts, and purify NOx in exhaust gas in a wide temperature range from low temperature to high temperature. An exhaust gas purifying catalyst and a method for producing the same are provided. [Configuration] following general formula: Cu a Ni b Si c Al d O ( wherein, a, b, c and d represents an atomic ratio of each element, When d = 2.0, a = 0.01 to 0.3, b = 0.2 Is 0.8, c = 0.01 to 0.3, and g is the number of oxygen atoms required to satisfy the valences of the above components.) And a multi-component complex oxide containing copper, nickel, silica and aluminum. |