公开(公告)号：EP0613714A2

公开(公告)日：1994-09-07

申请号：EP94100256.0

申请日：1994-01-10

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  CATALER INDUSTRIAL CO., LTD.

发明人： Miyoshi, Naoto ,  Matsumoto, Shinichi ,  Tanizawa, Tsuneyuki ,  Iguchi, Satoshi ,  Tanaka, Toshiaki ,  Takeshima, Shinichi ,  Kanazawa, Takaaki ,  Hayashi, Takahiro ,  Saiki, Motohisa, c/o K.K. Toyota Chuo Kenkyusho ,  Dohmae, Kazuhiko, c/o K.K. Toyota Chuo Kenkyusho ,  Yamazaki, Kiyoshi, c/o K.K. Toyota Chuo Kenkyusho ,  Suzuki, Tadashi, c/o K.K. Toyota Chuo Kenkyusho ,  Kasahaha, Koichi ,  Tateishi, Syuji

IPC分类号： B01D53/36

CPC分类号： B01D53/945 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/91 ,  B01J23/58 ,  B01J23/63 ,  B01J23/6522 ,  B01J23/6562 ,  B01J23/894 ,  B01J37/0242 ,  Y02T10/22

摘要： A catalyst for purifying exhaust gases includes a porous support, at least one catalyst ingredient selected from Pt and Pd, and additional ingredients including (1) at least two rare-earth elements including La, (2) at least one rare-earth element including La and at least one transition element selected from Fe, Ni, Co and Mn, (3) at least two alkali metals, (4) at least one alkali metal and at least one rare-earth element including La, (5) at least one alkali metal and at least one transition element selected from Fe, Ni, Co and Mn, (6) at least two alkaline-earth metals, (7) at least one alkaline-earth metal and at least one rare-earth element including La, or (8) Ba, Li, La, Ce and Zr. A process for purifying an exhaust gas, by contacting the catalyst with an exhaust gas, is also provided.

摘要翻译： 公开了一种催化剂和净化废气的方法。 催化剂包括多孔载体，负载在多孔载体上的Pt和/或Pd，以及负载在其上并能够与废气中所含的NO x和SO 2反应的至少两种成分，形成硝酸盐和复合硫酸盐。 由于所得复合硫酸盐在贫氧气氛（即富燃料气氛）中可能在低温下分解，所以催化剂可以吸收更多的NO x。 因此，催化剂可以净化更多的NOx。 此外，选自过渡元素的第二种成分可代替两种助催化剂中的一种。 此外，即使进行苛刻的耐久性试验，催化剂也具有优异的NOx净化性能。 在该过程中，使催化剂与富氧废气接触，其中氧浓度为氧化其中被氧化的组分所需的化学计量点或更多。

公开(公告)号：EP0613714B1

公开(公告)日：2001-07-04

申请号：EP94100256.0

申请日：1994-01-10

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  CATALER INDUSTRIAL CO., LTD.

发明人： Miyoshi, Naoto ,  Matsumoto, Shinichi ,  Tanizawa, Tsuneyuki ,  Iguchi, Satoshi ,  Tanaka, Toshiaki ,  Takeshima, Shinichi ,  Kanazawa, Takaaki ,  Hayashi, Takahiro ,  Saiki, Motohisa, c/o K.K. Toyota Chuo Kenkyusho ,  Dohmae, Kazuhiko, c/o K.K. Toyota Chuo Kenkyusho ,  Yamazaki, Kiyoshi, c/o K.K. Toyota Chuo Kenkyusho ,  Suzuki, Tadashi, c/o K.K. Toyota Chuo Kenkyusho ,  Kasahaha, Koichi ,  Tateishi, Syuji

IPC分类号： B01D53/94

CPC分类号： B01D53/945 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/91 ,  B01J23/58 ,  B01J23/63 ,  B01J23/6522 ,  B01J23/6562 ,  B01J23/894 ,  B01J37/0242 ,  Y02T10/22

公开(公告)号：EP0613714A3

公开(公告)日：1994-10-05

申请号：EP94100256.0

申请日：1994-01-10

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  CATALER INDUSTRIAL CO., LTD.

发明人： Miyoshi, Naoto ,  Matsumoto, Shinichi ,  Tanizawa, Tsuneyuki ,  Iguchi, Satoshi ,  Tanaka, Toshiaki ,  Takeshima, Shinichi ,  Kanazawa, Takaaki ,  Hayashi, Takahiro ,  Saiki, Motohisa, c/o K.K. Toyota Chuo Kenkyusho ,  Dohmae, Kazuhiko, c/o K.K. Toyota Chuo Kenkyusho ,  Yamazaki, Kiyoshi, c/o K.K. Toyota Chuo Kenkyusho ,  Suzuki, Tadashi, c/o K.K. Toyota Chuo Kenkyusho ,  Kasahaha, Koichi ,  Tateishi, Syuji

IPC分类号： B01D53/36

CPC分类号： B01D53/945 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20746 ,  B01D2255/20753 ,  B01D2255/91 ,  B01J23/58 ,  B01J23/63 ,  B01J23/6522 ,  B01J23/6562 ,  B01J23/894 ,  B01J37/0242 ,  Y02T10/22

摘要： A catalyst for purifying exhaust gases includes a porous support, at least one catalyst ingredient selected from Pt and Pd, and additional ingredients including (1) at least two rare-earth elements including La, (2) at least one rare-earth element including La and at least one transition element selected from Fe, Ni, Co and Mn, (3) at least two alkali metals, (4) at least one alkali metal and at least one rare-earth element including La, (5) at least one alkali metal and at least one transition element selected from Fe, Ni, Co and Mn, (6) at least two alkaline-earth metals, (7) at least one alkaline-earth metal and at least one rare-earth element including La, or (8) Ba, Li, La, Ce and Zr. A process for purifying an exhaust gas, by contacting the catalyst with an exhaust gas, is also provided.