公开(公告)号：EP1695761A1

公开(公告)日：2006-08-30

申请号：EP04807495.9

申请日：2004-12-15

申请人： Daihatsu Motor Co., Ltd.

发明人： TANAKA, Hirohisa c/o SHIGA TECHNICAL CENTER ,  TAN, Isao c/o SHIGA TECHNICAL CENTER ,  UENISHI, Mari c/o SHIGA TECHNICAL CENTER ,  TANIGUCHI, Masashi c/o SHIGA TECHNICAL CENTER

IPC分类号： B01J23/58 ,  B01J23/89 ,  B01D53/86 ,  C01G55/00

CPC分类号： B01D53/945 ,  B01D2255/402 ,  B01J23/002 ,  B01J23/58 ,  B01J23/63 ,  B01J23/8946 ,  B01J35/002 ,  B01J35/1009 ,  B01J35/1014 ,  B01J2523/00 ,  B82Y30/00 ,  C01G55/002 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2006/12 ,  Y02T10/22 ,  B01J2523/25 ,  B01J2523/47 ,  B01J2523/822 ,  B01J2523/24 ,  B01J2523/31 ,  B01J2523/828 ,  B01J2523/23 ,  B01J2523/48 ,  B01J2523/821 ,  B01J2523/842 ,  B01J2523/3706 ,  B01J2523/22

摘要： To provide a catalyst composition which prevents the activity from deteriorating due to grain growth of Rh and/or Pt and exhibits satisfactory catalytic performance over a long time, the catalyst composition is prepared so that it comprises a perovskite-type composite oxide represented by the following general formula (1):

        A 1-x A' x B 1-(y+z) B' y N z O 3      (1)

wherein A represents at least one element selected from alkaline earth metals; A' represents at least one element selected from rare earth elements; B represents at least one element selected from Ti, Zr, and Hf; B' represents at least one element selected from transition elements (excluding rare earth elements, Ti, Zr, Hf, Rh, and Pt) and Al; N represents at least one element selected from Rh and Pt; x represents an atomic ratio satisfying the following condition: 0 ≤ x ≤ 0.4; y represents an atomic ratio satisfying the following condition: 0 ≤ y

摘要翻译： 为了提供一种催化剂组合物，其防止由于Rh和/或Pt的晶粒生长而导致的活性劣化并且长时间显示出令人满意的催化性能，所以制备催化剂组合物，使其包含由以下化合物表示的钙钛矿型复合氧化物 一般公式（1）：€ƒ€ƒ€ƒ€ƒ€ƒ€ƒA1-x A'x B 1-（y + z）B'y N z O 3€ƒ€ƒ€€ ƒ€ƒ（1）其中A表示选自碱土金属的至少一种元素; A'表示选自稀土元素中的至少一种元素; B表示选自Ti，Zr和Hf中的至少一种元素; B'表示选自过渡元素（不包括稀土元素，Ti，Zr，Hf，Rh和Pt）和Al中的至少一种元素; N表示选自Rh和Pt中的至少一种元素; x表示满足以下条件的原子比：0‰¤x‰¤0.4; y表示满足以下条件的原子比：0‰¤y <0.5; z表示满足以下条件的原子比：0

公开(公告)号：EP1533030A1

公开(公告)日：2005-05-25

申请号：EP03741161.8

申请日：2003-07-03

申请人： Daihatsu Motor Co., Ltd.

发明人： TANAKA, Hirohisa c/o SHIGA TECHNICAL CENTER ,  TAN, Isao c/o SHIGA TECHNICAL CENTER ,  UENISHI, Mari c/o SHIGA TECHNICAL CENTER ,  KAJITA, Nobuhiko c/o SHIGA TECHNICAL CENTER ,  TANIGUCHI, Masashi c/o SHIGA TECHNICAL CENTER

IPC分类号： B01J23/89 ,  B01J23/63 ,  B01D53/94

CPC分类号： B01J37/033 ,  B01D53/945 ,  B01D2255/1025 ,  B01D2255/402 ,  B01J21/04 ,  B01J21/066 ,  B01J23/002 ,  B01J23/63 ,  B01J23/6562 ,  B01J23/688 ,  B01J23/894 ,  B01J23/8946 ,  B01J23/8986 ,  B01J35/002 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/08 ,  B01J2523/00 ,  C01G55/002 ,  C01P2002/34 ,  C01P2002/54 ,  C01P2004/80 ,  C01P2006/12 ,  C01P2006/80 ,  Y02T10/22 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/3725 ,  B01J2523/72 ,  B01J2523/822 ,  B01J2523/842 ,  B01J2523/31 ,  B01J2523/3718 ,  B01J2523/36

摘要： To provide an exhaust gas purifying catalyst which can maintain the catalytic activity of Rh at a high level over a long time and can achieve satisfactory emission control performance, an exhaust gas purifying catalyst is prepared so as to contain a composite oxide having a perovskite structure represented by the general formula (1):

        ABRhO 3      (1)

wherein A represents at least one element selected from rare-earth elements essentially including one or more rare-earth elements each having a valence of 3 as the only valence and arbitrarily including Ce and/or Pr; and B represents at least one element selected from transition elements excluding Co, Rh and the rare-earth elements, and Al.

摘要翻译： 为了提供能够长时间保持Rh的高水平的催化活性并能够实现令人满意的排放控制性能的废气净化催化剂，制备排气净化催化剂，以含有代表钙钛矿结构的复合氧化物 通式（1）：ABRhO 3其中A表示选自稀土元素中的至少一种元素，其基本上包括一种或多种稀土元素，其各自的价数为3，并且任意包括Ce和/或Pr; B表示选自Co，Rh和稀土元素以外的过渡元素中的至少一种元素，Al表示。