abstract |
The present invention relates to exhaust gas purification catalysts, it is characterized in that, it includes the carrier containing modification aluminium borate and support platinum family element on this carrier, the modification aluminium borate contains at least one of the oxide of element in the group including Zr, Si, Fe and Ti oxide on aluminium borate, wherein, the concentration of the oxide is calculated as the 0.06 mass mass of %~18 % on the basis of the quality for modifying aluminium borate. |