Exhaust gas catalyst containing rhodium, zirconium and rare earth oxide

摘要

A catalyst comprising rhodium on a support, the support comprising 52-95% zirconia and 5-48% rare earth oxide, based on the total weight of (a) and (b), the concentration of the rhodium on the support being 0.035-0.35% based on the total weight of the rhodium and the support, and the catalyst containing 1.2-4.0 g per in<3 >(g per 16.4 cm<3>) in total of (a) and (b).