Patent ID: 8828900

Claim:
An exhaust gas purification catalyst comprising a substrate, a lower layer disposed on the substrate, and an upper layer disposed on the lower layer, wherein a first catalyst has Al 2 O 3 as a carrier and has Pt and Pd supported as noble metals on the Al 2 O 3 ; a second catalyst has either of an Al 2 O 3 —ZrO 2 complex oxide or an Al 2 O 3 —ZrO 2 —TiO 2 complex oxide as a carrier and has Pd supported as a noble metal on either of the Al 2 O 3 —ZrO 2 complex oxide or the Al 2 O 3 —ZrO 2 —TiO 2 complex oxide; the upper layer is provided with the first catalyst and the second catalyst; the lower layer is provided with the first catalyst; and the upper layer is provided with a zeolite.