Three-way catalyst for purifying gasoline engine exhaust gas

A three-way catalyst for purifying gasoline engine exhaust gas, the three-way catalyst comprising:

• a carrier having a honeycomb structure, and
• a first catalyst layer and a second catalyst layer on the carrier to remove carbon monoxide, hydrocarbons, and nitrogen oxides in gasoline engine exhaust gas,
• wherein:
• the first catalyst layer is composed of a first catalyst composition comprising a heat resistant inorganic oxide supporting Pd and a La-containing oxide,
• the second catalyst layer is composed of a second catalyst composition comprising a heat resistant inorganic oxide supporting Rh,
• the first catalyst layer is disposed farther from the carrier than the second catalyst layer,
• the heat resistant inorganic oxide in at least one of the first catalyst composition and the second catalyst composition comprises a Ce-containing oxide, and
• in the three-way catalyst, a content of La in terms of La2O3 is 9.6 g/L to 23 g/L, and a content of Ce in terms of CeO2 is 5 g/L to 20 g/L.