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    Exhaust gas cleaner and method for cleaning exhaust gas
    1.
    发明授权
    Exhaust gas cleaner and method for cleaning exhaust gas 失效
    废气净化器和排气净化方法

    公开(公告)号：US5741468A

    公开(公告)日：1998-04-21

    申请号：US466436

    申请日：1995-06-06

    申请人： Mika Saito ,  Kiyohide Yoshida ,  Naoko Irite ,  Hong He ,  Akira Abe ,  Akira Nishiya

    发明人： Mika Saito ,  Kiyohide Yoshida ,  Naoko Irite ,  Hong He ,  Akira Abe ,  Akira Nishiya

    IPC分类号： B01D53/94 ,  B01J23/50 ,  B01J23/89 ,  B01J35/00 ,  B01J8/00 ,  C01B21/00

    CPC分类号： B01J35/0006 ,  B01D53/9418 ,  B01J23/50 ,  B01J23/8933 ,  B01D2251/208 ,  B01D2251/21 ,  B01D2255/1023 ,  B01D2255/104 ,  B01D2255/2063 ,  B01D2255/20753 ,  B01D2255/20761 ,  B01D2255/9207

    摘要： An exhaust gas cleaner is constituted by a first catalyst carrying an Ag component, a second catalyst carrying an Ni component or two or more of an Ni component, Ag component and Cu component, and optionally a third catalyst carrying a noble metal component alone or in combination with a base metal component. The second and third catalysts may be physically mixed to form a mixed catalyst. Another exhaust gas cleaner is constituted by a mixed catalyst of a first catalyst carrying an Ag component and a second catalyst carrying an Ni component alone or in combination with a Cu component, and a third catalyst carrying a noble metal component alone or in combination with a base metal component. Still another exhaust gas cleaner is constituted by a first catalyst carrying an Ag component, a second catalyst which is a mixture of an Ni catalyst, Ag catalyst and Cu catalyst, and optionally a third catalyst carrying a noble metal component alone or in combination with a base metal component. The second and third catalyst may be physically mixed to form a mixed catalyst.

    摘要翻译： 排气净化器由承载有Ag成分的第一催化剂，负载Ni成分的第二催化剂或Ni成分，Ag成分和Cu成分中的两种以上的第二催化剂，以及任选的第三催化剂， 与贱金属组分组合。 第二和第三催化剂可以物理混合以形成混合催化剂。 另一种废气净化器由承载Ag成分的第一催化剂和第一催化剂构成，该催化剂单独或与Cu组分单独或与Cu组分一起携带Ni组分，第三催化剂单独携带贵金属组分或与 贱金属成分。 另一种排气净化器由携带Ag组分的第一催化剂，作为Ni催化剂，Ag催化剂和Cu催化剂的混合物的第二催化剂和任选地携带贵金属组分的第三催化剂单独或与 贱金属成分。 第二和第三催化剂可以物理混合以形成混合催化剂。

    Exhaust gas cleaner and method for cleaning exhaust gas
    3.
    发明授权
    Exhaust gas cleaner and method for cleaning exhaust gas 失效
    废气净化器和排气净化方法

    公开(公告)号：US5882607A

    公开(公告)日：1999-03-16

    申请号：US883082

    申请日：1997-06-26

    申请人： Tatsuo Miyadera ,  Kiyohide Yoshida ,  Mika Saito ,  Naoko Irite ,  Akira Abe ,  Masataka Furuyama

    发明人： Tatsuo Miyadera ,  Kiyohide Yoshida ,  Mika Saito ,  Naoko Irite ,  Akira Abe ,  Masataka Furuyama

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/89 ,  B01D53/34

    CPC分类号： B01J23/8986 ,  B01D53/8628 ,  B01D53/869 ,  B01D53/9418 ,  B01J23/8926 ,  B01J23/898 ,  B01D2251/208 ,  B01D2255/102 ,  B01D2255/104 ,  B01D2255/20761 ,  B01D2258/012

    摘要： An exhaust gas cleaner is constituted of an Ag catalyst carrying an Ag component and a base metal catalyst carrying a Cu component and optionally W, V, Mo components, and a noble metal catalyst carrying a noble metal component. The base metal catalyst and the noble metal catalyst may be physically mixed to form a mixed catalyst. Another exhaust gas cleaner is constituted of the first Ag catalyst carrying an Ag component, the second Ag catalyst carrying an Ag component, a base metal catalyst carrying a Cu component and optionally W, V, Mo components, and a noble metal catalyst carrying a noble metal component. The second Ag catalyst carries the Ag component in an amount larger than that of the first Ag catalyst. The noble metal catalyst is physically mixed with the base metal catalyst to form a mixed catalyst. The exhaust gas cleaner can effectively remove nitrogen oxides in a wide temperature range of exhaust gas.

    摘要翻译： 废气净化器由承载有Ag成分的Ag催化剂和承载Cu成分的基体金属催化剂和任选的W，V，Mo成分和承载贵金属成分的贵金属催化剂构成。 贱金属催化剂和贵金属催化剂可以物理混合形成混合催化剂。 另一种排气净化器由承载Ag成分的第一Ag催化剂，负载Ag成分的第二Ag催化剂，载有Cu成分的基体金属催化剂和任选的W，V，Mo成分和携带贵金属的贵金属催化剂构成 金属部件。 第二种Ag催化剂的Ag组分的量大于第一种Ag催化剂的量。 贵金属催化剂与贱金属催化剂物理混合形成混合催化剂。 废气净化器可以在宽温度范围的废气中有效去除氮氧化物。

    Method for cleaning exhaust gas
    5.
    发明授权
    Method for cleaning exhaust gas 失效
    排气净化方法

    公开(公告)号：US5744112A

    公开(公告)日：1998-04-28

    申请号：US647259

    申请日：1996-05-13

    申请人： Naoko Irite ,  Akira Abe ,  Kiyohide Yoshida

    发明人： Naoko Irite ,  Akira Abe ,  Kiyohide Yoshida

    IPC分类号： B01D53/94 ,  B01J23/50 ,  B01J23/64 ,  B01J23/68 ,  B01J35/00 ,  C01C3/00

    CPC分类号： B01D53/945 ,  B01D53/9418 ,  B01J23/50 ,  B01J23/64 ,  B01J23/68 ,  B01J35/0006 ,  B01D2251/204 ,  B01D2251/208 ,  B01D2251/21 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/104 ,  B01D2255/106 ,  B01D2255/20723 ,  B01D2255/20776 ,  B01D53/9477 ,  Y02T10/22

    摘要： A method of cleaning an exhaust gas using an exhaust gas cleaner constituted by a first catalyst comprising a first porous inorganic oxide supporting an Ag component, a W component and a Pt component and optionally a second catalyst comprising a second porous inorganic oxide supporting a Pt component alone or in combination with a W component. The Ag component may include Ag and compounds thereof, the Pt component of the first and second catalysts may include Pt, Pd, Ru, Rh, Ir and Au, and the W component of the first and second catalysts may include W, V, Mn, Mo, Nb and Ta. The W component effectively catalyze the reduction of nitrogen oxides by ammonia to enhance the removal efficiency of the exhaust gas cleaner.

    摘要翻译： 一种使用由第一催化剂构成的排气净化器的排气净化方法，所述第一催化剂包括负载Ag成分的第一多孔无机氧化物，W成分和Pt成分，以及任选的第二催化剂，所述第二催化剂含有负载Pt成分的第二多孔无机氧化物 单独或与W组分组合。 Ag组分可以包括Ag及其化合物，第一和第二催化剂的Pt组分可以包括Pt，Pd，Ru，Rh，Ir和Au，第一和第二催化剂的W组分可以包括W，V，Mn ，Mo，Nb和Ta。 W组分有效地催化用氨还原氮氧化物以提高废气净化器的去除效率。

    Exhaust gas cleaner and method for cleaning same
    7.
    发明授权
    Exhaust gas cleaner and method for cleaning same 失效
    废气清洁剂及其清洗方法

    公开(公告)号：US5658543A

    公开(公告)日：1997-08-19

    申请号：US532260

    申请日：1995-09-22

    申请人： Kiyohide Yoshida ,  Gyo Muramatsu ,  Akira Abe ,  Naoko Irite

    发明人： Kiyohide Yoshida ,  Gyo Muramatsu ,  Akira Abe ,  Naoko Irite

    IPC分类号： B01D53/94 ,  B01J23/50 ,  B01J23/89 ,  B01J35/00 ,  B01D53/56 ,  B01D53/92

    CPC分类号： B01D53/945 ,  B01D53/9418 ,  B01J23/50 ,  B01J23/8926 ,  B01J35/0006 ,  B01D2251/208 ,  B01D2251/21 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/104 ,  B01D2255/106 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20761 ,  Y02T10/22

    摘要： Nitrogen oxides are efficiently removed frown an exhaust gas containing nitrogen oxides and an excess amount of oxygen, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner comprising a first catalyst comprising 0.2-15 weight % (on a metal basis) of silver or silver oxide supported on a porous inorganic oxide on the inlet side and a second catalyst comprising 0.2-15 weight % (on a metal basis) of silver or silver oxide and 2 weight % or less (on a metal basis) of copper or copper oxide supported on a porous inorganic oxide on the outlet side; (ii) introducing hydrocarbons and/or oxygen-containing organic compounds into the exhaust gas on the upstream side of the exhaust gas cleaner; and (iii) bringing the exhaust gas into contact with the exhaust gas cleaner at a temperature of 200.degree.-600.degree. C.

    摘要翻译： 通过（i）在排气的流路中设置废气清洁剂，氮氧化物被有效地除去含有氮氧化物和过量氧的废气，所述排气净化器包括第一催化剂，所述第一催化剂包含0.2-15重量份 负载在入口侧的多孔无机氧化物上的银或银氧化物的基于金属（基于金属的）％的第二催化剂和包含0.2-15重量％（基于金属的）银或氧化银和2重量％以下的第二催化剂 负载在出口侧的多孔无机氧化物上的铜或氧化铜的金属基） （ii）将碳氢化合物和/或含氧有机化合物引入废气净化器的上游侧的废气中; 和（iii）使排气与废气净化器在200℃-600℃的温度下接触。

    Exhaust gas cleaner and method for cleaning same
    10.
    发明授权
    Exhaust gas cleaner and method for cleaning same 失效
    废气清洁剂及其清洗方法

    公开(公告)号：US5670444A

    公开(公告)日：1997-09-23

    申请号：US531904

    申请日：1995-09-21

    申请人： Kiyohide Yoshida ,  Gyo Muramatsu ,  Akira Abe ,  Naoko Irite

    发明人： Kiyohide Yoshida ,  Gyo Muramatsu ,  Akira Abe ,  Naoko Irite

    IPC分类号： B01D53/94 ,  B01J23/89 ,  B01J35/00 ,  F01N3/20 ,  B01J23/72 ,  B01J20/00

    CPC分类号： B01J35/0006 ,  B01D53/9418 ,  B01J23/8926 ,  B01D2251/208 ,  B01D2251/21 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/104 ,  B01D2255/106 ,  B01D2255/20707 ,  B01D2255/20761 ,  B01D2255/9032 ,  B01D53/9477 ,  F01N2610/03

    摘要： Nitrogen oxides are efficiently removed from an exhaust gas containing nitrogen oxides and an excess amount of oxygen, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner comprising a first catalyst comprising 0.2-15 weight % (on a metal basis) of at least one silver salt selected from the group consisting of silver halides, silver sulfate and silver phosphate supported on a porous inorganic oxide on an inlet side and a second catalyst comprising (a) 0.2-15 weight % (on a metal basis) of at least one silver salt selected from the group consisting of silver halides, silver sulfate and silver phosphate and (b) up to 2 weight % (on a metal basis) of copper or copper oxide supported on a porous inorganic oxide on an outlet side; (ii) introducing at least one reducing agent selected from hydrocarbons and oxygen-containing organic compounds into the exhaust gas on an upstream side of the exhaust gas cleaner; and (iii) bringing the exhaust gas into contact with the exhaust gas cleaner at a temperature of 200.degree.-600.degree. C.

    摘要翻译： 通过（i）在排气的流路中设置废气清洁剂，有效地从含有氮氧化物和过量氧的废气中除去氮氧化物，所述废气净化器包括含有0.2-15重量份的第一催化剂 选自负载在入口侧的多孔无机氧化物上的至少一种选自银卤化银，硫酸银和磷酸银的银盐（以金属计），和第二催化剂，其包含（a）0.2-15重量％ （以金属为基准）至少一种选自银卤化银，硫酸银和磷酸银的银盐和（b）至多2重量％（以金属为基准）负载在多孔材料上的铜或氧化铜 出口侧的无机氧化物; （ii）在废气净化器的上游侧将至少一种选自烃和含氧有机化合物的还原剂引入排气中; 和（iii）使排气与废气净化器在200℃-600℃的温度下接触。