| 摘要 |
PURPOSE:To efficiently remove NOx by supporting a Pt family metal on a compd. oxide represented by a specified chemical formula contg. an alkaline earth metal, a rare earth metal and a Cu family element. CONSTITUTION:A device for removing NOx is fitted with a catalyst obtd. by supporting a Pt family metal on a compd. oxide represented by a chemical formula AxByCzOalpha-beta or Ax(A)(x)By(B)(y)Cz(C)(z)Oalpha-beta [where A and (A) are alkaline earth metals, B and (B) are rare earth elements, C and (C) and Cu family elements, x>=0, (x)<=3.0, y>=0, (y)<=2.0, z>=0, (z)<=4.0, 4.0<=alpha<=8.0 and 0<=beta<=2.0]. The catalyst enables denitration without requiring a reducing agent and has high heat resistance. |
