CATALYST FOR CLEANING EXHAUST GAS

摘要

Provided is a catalyst for purifying an exhaust gas, the catalyst excelling in catalytic performance and oxygen storage capacity (OSC). The catalyst for purifying an exhaust gas of the present invention is a catalyst for purifying an exhaust gas which comprises a ceria-zirconia composite oxide (A) having a pyrochlore structure and a ceria-zirconia composite oxide (B) having a cubic crystal structure, wherein at least a part of the ceria-zirconia composite oxide (A) is composited with the ceria-zirconia composite oxide (B).