LAYERED COMPLEX OXIDE, OXIDATION CATALYST, AND DIESEL PARTICULATE FILTER

摘要

The objective of and problem addressed by the present invention is to provide: a layered complex oxide that has superior oxygen ion conductivity and that, in particular, can effectively decrease the PM oxidation temperature without using a noble metal such as platinum; an oxidation catalyst using the layered complex oxide; a DPF; a three-way catalyst; and an NOx scrubbing catalyst. Also, the layered complex oxide has a composition represented by the following (1) formula: La1.5Sr1.5Mn2-yByO7 (1) (in the formula, B indicates Cu and/or Fe, and y satisfies 0 < y = 0.2). Also, the oxidation catalyst contains the layered complex oxide, the diesel particulate filter is provided with the oxidation catalyst and an integral structure carrier coated with the oxidation catalyst, the three-way catalyst contains the layered complex oxide, and the nitrogen oxide scrubbing catalyst contains the layered complex oxide.