EXHAUST GAS PURIFICATION CATALYST COMPOSITION AND EXHAUST GAS PURIFICATION CATALYST

摘要

Provided is a new catalyst that can have heightened purification performance for NOx under lean conditions. Proposed is an exhaust gas purification catalyst composition provided with: a carrier (A) comprising zirconium phosphate; a catalyst active component (a) supported on the carrier (A); a carrier (B) comprising an inorganic oxide porous body; and a catalyst active component (b) supported on the carrier (B).