反应详情

A zirconium-cerium-lanthanum composite oxide (Powder A5) was prepared according to the procedure of Example 1 while changing the amounts of zirconium oxychloride, cerium, and lanthanum to be used so as to form a weight ratio of 40 g of zirconium oxide, 10 g of cerium oxide, and 10 g of lanthanum oxide.