Phodium, containing a rare-earth element oxide and zirconia exhaust gas catalyst

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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(g per 16.4 cm) in total of (a) and (b).