| abstract |
(57) [Summary] [Structure] At least one selected from (a) ruthenium (Ru) and rhodium (Rh) in α-Al 2 O 3. Seed, and (b) La 2 O 3 , CeO 2 , Pr 2 O 3 , N. A catalyst for decomposing nitrous oxide, which carries at least one selected from d 2 O 3 , Sm 2 O 3 , Tb 2 O 3 , and Y 2 O 3 . [Effects] Nitrous oxide in exhaust gas can be efficiently catalytically decomposed even at low temperatures, and is unlikely to change with time. |