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    Method for controlling NOx reduction system
    1.
    发明授权
    Method for controlling NOx reduction system 有权
    控制NOx还原系统的方法

    公开(公告)号：US08186149B2

    公开(公告)日：2012-05-29

    申请号：US12375315

    申请日：2007-07-30

    申请人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba ,  Hiroshi Ohno

    发明人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba ,  Hiroshi Ohno

    IPC分类号： F01N3/00

    CPC分类号： B01D53/9422 ,  B01D2255/10 ,  B01D2255/2065 ,  B01D2255/20738 ,  B01D2255/9022 ,  B01J23/63 ,  B01J37/0244 ,  B01J37/0246 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0864 ,  F01N3/2073 ,  F01N2240/25 ,  F01N2510/0684 ,  F01N2570/18 ,  F02B37/00 ,  Y02A50/2325 ,  Y02T10/22 ,  Y02T10/24

    摘要： A NOx reduction system comprises NOx treatment catalyst and air-fuel ratio control switch for changing the air-fuel ratio of an exhaust gas to a lean or rich state. The NOx treatment catalyst comprises at least a first catalyst layer containing a solid acid catalyst capable of adsorbing ammonia and a second catalyst layer containing a noble metal and a cerium oxide material. The second and the first catalyst layer are stacked in that order on a carrier, and the first catalyst layer constitutes the uppermost layer. NOx is passed through the first catalyst layer in the lean state and is temporarily stored in the second catalyst layer. Thereafter, in the rich state, NOx is converted to NH3 and is restored in the first catalyst layer. When the state is again returned to the lean state, NH3 is converted to nitrogen which is finally released from the first catalyst layer.

    摘要翻译： NOx还原系统包括用于将废气的空燃比改变为贫或富状态的NOx处理催化剂和空燃比控制开关。 NOx处理催化剂至少含有能够吸附氨的固体酸催化剂的第一催化剂层和含有贵金属和氧化铈材料的第二催化剂层。 第二催化剂层和第一催化剂层依次层叠在载体上，第一催化剂层构成最上层。 NOx以稀态形式通过第一催化剂层，并临时储存在第二催化剂层中。 此后，在富状态下，将NOx转化为NH 3并在第一催化剂层中恢复。 当状态再次返回到贫态时，NH 3转化为最终从第一催化剂层释放的氮。

    METHOD FOR CONTROLLING NOx REDUCTION SYSTEM
    3.
    发明申请
    METHOD FOR CONTROLLING NOx REDUCTION SYSTEM 有权
    控制NOx还原系统的方法

    公开(公告)号：US20090308054A1

    公开(公告)日：2009-12-17

    申请号：US12375315

    申请日：2007-07-30

    申请人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba ,  Hiroshi Ohno

    发明人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba ,  Hiroshi Ohno

    IPC分类号： F02D41/00 ,  F01N3/10

    CPC分类号： B01D53/9422 ,  B01D2255/10 ,  B01D2255/2065 ,  B01D2255/20738 ,  B01D2255/9022 ,  B01J23/63 ,  B01J37/0244 ,  B01J37/0246 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0864 ,  F01N3/2073 ,  F01N2240/25 ,  F01N2510/0684 ,  F01N2570/18 ,  F02B37/00 ,  Y02A50/2325 ,  Y02T10/22 ,  Y02T10/24

    摘要： To provide a method for controlling a NOx reduction system which can remove NOx with a satisfactorily high efficiency even under low-temperature operating conditions as in diesel cars. The NOx reduction system comprises NOx treatment means disposed in an exhaust passage in an internal combustion engine, and air-fuel ratio control means for bringing the air-fuel ratio of an exhaust gas to a lean or rich state. The NOx treatment means comprises at least a first catalyst layer containing a solid acid catalyst capable of adsorbing ammonia and a second catalyst layer containing a noble metal and a cerium oxide material. The second catalyst layer and the first catalyst layer are stacked in that order on a carrier, and the first catalyst layer constitutes the uppermost layer. The air-fuel ratio control means controls so that the lean state and the rich state are repeated at predetermined intervals. According to the above constitution, NOx is passed through the first catalyst layer in the lean state and is temporarily stored in the second catalyst layer. Thereafter, in the rich state, NOx is converted to NH3 and is restored in the first catalyst layer. When the state is again returned to the lean state, NH3 is converted to nitrogen which is finally released from the first catalyst layer.

    摘要翻译： 提供一种用于控制NOx还原系统的方法，其可以在如柴油车辆中的低温操作条件下以令人满意的高效率除去NOx。 NOx还原系统包括设置在内燃机的排气通道中的NOx处理装置，以及用于使排气的空燃比变为稀薄或浓缩状态的空燃比控制装置。 NOx处理装置至少包括含有能够吸附氨的固体酸催化剂的第一催化剂层和含有贵金属和氧化铈材料的第二催化剂层。 第二催化剂层和第一催化剂层依次层叠在载体上，第一催化剂层构成最上层。 空燃比控制装置进行控制，使得以预定间隔重复稀薄状态和浓气状态。 根据上述结构，NOx以贫态通过第一催化剂层，暂时保存在第二催化剂层中。 此后，在富状态下，将NOx转化为NH 3并在第一催化剂层中恢复。 当状态再次返回到贫态时，NH 3转化为最终从第一催化剂层释放的氮。

    NOx purifying catalyst
    4.
    发明授权
    NOx purifying catalyst 失效
    NOx净化催化剂

    公开(公告)号：US07662743B2

    公开(公告)日：2010-02-16

    申请号：US11826108

    申请日：2007-07-12

    申请人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba

    发明人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba

    IPC分类号： B01J23/10 ,  B01J23/38 ,  B01J23/745 ,  B01J35/00

    CPC分类号： B01D53/9422 ,  B01D53/945 ,  B01D2255/10 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/502 ,  B01D2255/9022 ,  B01J23/63 ,  B01J29/061 ,  B01J29/072 ,  B01J29/7615 ,  B01J37/0244 ,  B01J37/0246 ,  Y02A50/2324 ,  Y02T10/22

    摘要： The present invention provides an NOx purifying catalyst that removes NOx with sufficient efficiency even under low temperature operation such as diesel engine automobiles. An NOx purifying catalyst for processing NOx in exhaust gas by rich/lean control of the air-fuel ratio of the exhaust gas, includes a first catalytic layer containing β-zeolite having iron and/or cerium elements, and a second catalytic layer including a noble metal and cerium oxide-based material; in which the second and the first catalytic layers are coated on a support in that order so that the first catalytic layer is the uppermost layer. The NOx purifying catalyst purifies NOx as showed in Reaction Formulations (1) to (4). Lean condition 1: NO+½O2→NO2  (1) Rich condition: CO+H2O→CO2  (2) NOx+H2→NH3  (3) Lean condition 2: NOx+NH3+O2→N2+H2O  (4).

    摘要翻译： 本发明提供一种NOx净化催化剂，即使在诸如柴油机汽车的低温操作下也能以足够的效率除去NOx。 用于通过对废气的空燃比进行浓缩/稀疏控制来处理废气中的NOx的NOx净化催化剂包括含有具有铁和/或铈元素的β-沸石的第一催化剂层和包含 贵金属和氧化铈基材料; 其中第二催化剂层和第一催化剂层依次涂覆在载体上，使得第一催化剂层是最上层。 NOx净化催化剂如反应制剂（1）至（4）所示净化NOx。 精馏条件1：NO +½O2-> NO2（1）丰富条件：CO + H2O-> CO2（2）NOx + H2-> NH3（3）精益条件2：NOx + NH3 + O2-> N2 + H2O ）。

    NOx purifying catalyst
    5.
    发明申请
    NOx purifying catalyst 失效
    NOx净化催化剂

    公开(公告)号：US20080026932A1

    公开(公告)日：2008-01-31

    申请号：US11826108

    申请日：2007-07-12

    申请人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba

    发明人： Naohiro Satoh ,  Osami Yamamoto ,  Koichi Inaba

    IPC分类号： B01J21/12

    CPC分类号： B01D53/9422 ,  B01D53/945 ,  B01D2255/10 ,  B01D2255/2065 ,  B01D2255/20715 ,  B01D2255/407 ,  B01D2255/502 ,  B01D2255/9022 ,  B01J23/63 ,  B01J29/061 ,  B01J29/072 ,  B01J29/7615 ,  B01J37/0244 ,  B01J37/0246 ,  Y02A50/2324 ,  Y02T10/22

    摘要： The present invention provides an NOx purifying catalyst that removes NOx with sufficient efficiency even under low temperature operation such as diesel engine automobiles. An NOx purifying catalyst for processing NOx in exhaust gas by rich/lean control of the air-fuel ratio of the exhaust gas, includes a first catalytic layer containing β-zeolite having iron and/or cerium elements, and a second catalytic layer including a noble metal and cerium oxide-based material; in which the second and the first catalytic layers are coated on a support in that order so that the first catalytic layer is the uppermost layer. The NOx purifying catalyst purifies NOx as showed in Reaction Formulations (1) to (4). Lean condition 1: NO+½O2−>NO2   (1) Rich condition: CO+H2O−>CO2   (2) NOx+H2−>NH3   (3) Lean condition 2: NOx+NH3+O2−>N2+H2O   (4)

    摘要翻译： 本发明提供一种NOx净化催化剂，即使在诸如柴油机汽车的低温操作下也能以足够的效率除去NOx。 用于通过对废气的空燃比进行浓缩/稀疏控制来处理废气中的NOx的NOx净化催化剂包括含有具有铁和/或铈元素的β-沸石的第一催化剂层和包含 贵金属和氧化铈基材料; 其中第二催化剂层和第一催化剂层依次涂覆在载体上，使得第一催化剂层是最上层。 NOx净化催化剂如反应制剂（1）至（4）所示净化NOx。 <？in-line-formula description =“在线公式”end =“lead”？>精益条件1：NO + 1/2> 2 ）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> Rich condition：CO + （2）<βin-line-formula description =“In-line Formulas”end =“tail”？> <？in- line-formula description =“In-line Formulas”end =“lead”？> NO 2 H 3 ）<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> Lean condition 2：NO N + 2 + N 2 + H 2 O 2 + N 2 + H 2 O 2 （4）<？in-line-formula description =“In-line Formulas”end =“tail”？>

    Exhaust purifying device for internal combustion engine
    6.
    发明申请
    Exhaust purifying device for internal combustion engine 审中-公开
    内燃机排气净化装置

    公开(公告)号：US20070003455A1

    公开(公告)日：2007-01-04

    申请号：US10564780

    申请日：2005-03-09

    申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada ,  Hiroshi Ohno ,  Naohiro Satoh

    发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada ,  Hiroshi Ohno ,  Naohiro Satoh

    IPC分类号： B01D50/00 ,  F01N3/10

    CPC分类号： F01N3/0842 ,  B01D53/9431 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2251/2062 ,  F01N3/206 ,  F01N3/2882 ,  F01N2610/04 ,  Y02T10/22

    摘要： A NOx removing device 4 having NOx absorbing capacity and ammonia retaining capacity is provided in an exhaust pipe 2 of an internal combustion engine 1. A reforming catalyst 3 is disposed upstream of the NOx removing device 4. The reforming catalyst 3 generates hydrogen and carbon monoxide by the steam reforming reaction, when the exhaust gases are in the reducing state. Hydrogen and carbon monoxide generated by the reforming catalyst 3 are supplied to the NOx removing device 4, and contribute to generation of ammonia. The generated ammonia is retained in the NOx removing device 4 and reduces NOx in exhaust gases when the exhaust gases are in the oxidizing state.

    摘要翻译： 在内燃机1的排气管2中设置具有NOx吸收能力和氨保持能力的NOx去除装置4。 重整催化剂3设置在NOx去除装置4的上游。 当废气处于还原状态时，重整催化剂3通过蒸汽重整反应产生氢气和一氧化碳。 由重整催化剂3产生的氢和一氧化碳被供给至NOx除去装置4，有助于氨的产生。 所产生的氨被保留在NOx去除装置4中，并且当废气处于氧化状态时减少废气中的NOx。

    Catalyst for purification of exhaust gas
    7.
    发明授权
    Catalyst for purification of exhaust gas 失效
    废气净化催化剂

    公开(公告)号：US06355590B1

    公开(公告)日：2002-03-12

    申请号：US09234417

    申请日：1999-01-21

    申请人： Kazuhide Terada ,  Naohiro Satoh ,  Yoshiyuki Nakanishi

    发明人： Kazuhide Terada ,  Naohiro Satoh ,  Yoshiyuki Nakanishi

    IPC分类号： B01J2987

    CPC分类号： B01J35/023 ,  B01D53/8628 ,  B01J23/42 ,  B01J29/87 ,  B01J37/0246 ,  B01J37/0248

    摘要： A catalyst for purifying exhaust gas is disclosed which can attain a high percentage of NO purification in an oxygen-excess atmosphere even after exposure to a hydrothermal environment. The catalyst for purifying exhaust gas comprises a combination of a carrier having platinum deposited thereon and CeO2 having an average crystallite diameter D satisfying D≧13.0 nm. The carrier is made of a gallosilicate having an SiO2/Ga2O3 molar ratio M satisfying 100≦M≦1,230.

    摘要翻译： 公开了一种用于净化废气的催化剂，即使在暴露于水热环境之后，也可以在氧气过剩的气氛中获得高纯度的NO净化。 用于净化废气的催化剂包括其上沉积有铂的载体和具有满足D> = 13.0nm的平均微晶直径D的CeO 2的组合。 载体由SiO 2 / Ga 2 O 3摩尔比M满足100≤M≤130的硅酸盐硅酸盐制成。