ACTIVE PEROVSKITE-TYPE CATALYSTS STABLE TO HIGH TEMPERATURE AGING FOR GASOLINE EXHAUST GAS APPLICATIONS

摘要

Compositions, articles, and methods related to a three-way-catalyst composition comprising a perovskite-type compound of formula (I): La_zB_1-qB′_qO_3±δ or formula (II): [BO_x]_y:[La_zBO_3±δ]_1-y and a non-redox active component; wherein B or B′ is Fe, Mn, Co, Ni, Cu, Ti, or Zr; q is in a range from about 0 to about 0.5; x is from about 1 to about 2.5; y is from about 1 to about 30 wt %; z is about 0.6 to about 1.1; δ is in a range from about 0 to about 0.6.