| abstract |
Provided is a catalyst composite that can be used in a method for treating exhaust gas from internal combustion engines, including diesel and gasoline engines, a system comprising such a catalyst composite, and a method of treating exhaust gas from an internal combustion engine using the catalyst composite Is done. The catalyst composite can provide a diesel oxidation catalyst and a three-way catalyst. A catalyst composite comprising a catalyst material on a support, the catalyst material comprising at least 60% by mass of a zirconia component and one or more rare earth element oxides selected from the group consisting of lantana, neodymia, praseodymia, and yttria There is provided the above catalyst composite comprising a palladium component dispersed on a first support comprising: wherein the first support optionally contains no more than 15 wt% ceria and no alumina. Also provided is a layered catalyst composite having one or more washcoats on the support. [Selection figure] None |