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    Exhaust gas purifying catalyst
    2.
    发明申请
    Exhaust gas purifying catalyst 审中-公开
    废气净化催化剂

    公开(公告)号：US20070066479A1

    公开(公告)日：2007-03-22

    申请号：US10576025

    申请日：2004-10-14

    申请人： Shinichi Takeshima ,  Tetsuya Yamashita ,  Toshiaki Tanaka

    发明人： Shinichi Takeshima ,  Tetsuya Yamashita ,  Toshiaki Tanaka

    IPC分类号： B01J23/10

    CPC分类号： B01D53/945 ,  B01J23/002 ,  B01J23/58 ,  B01J23/63 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/3706 ,  B01J2523/48

    摘要： An exhaust gas purifying catalyst that exhibits purifying performance even at high temperatures. The catalyst carries an alkali metal and a noble metal on a crystalline zirconium composite oxide, wherein the zirconium composite oxide is one in which zirconium is partly substituted with at least one kind of element selected from the group consisting of an alkaline earth metal, a rare earth metal and an element of the group IIIB, and the elongation of the crystal lattice due to the substitution with the element assumes a nearly theoretical value.

    摘要翻译： 一种即使在高温下也具有净化性能的排气净化催化剂。 催化剂在结晶锆复合氧化物上携带碱金属和贵金属，其中锆复合氧化物是其中锆部分被至少一种选自碱土金属，稀有金属 土金属和IIIB族的元素，并且由于用该元素取代的晶格的伸长率呈现接近理论值。

    Particulate burning catalyst
    3.
    发明授权
    Particulate burning catalyst 失效
    颗粒燃烧催化剂

    公开(公告)号：US07138353B2

    公开(公告)日：2006-11-21

    申请号：US10088648

    申请日：2001-07-23

    申请人： Shinichi Takeshima ,  Tetsuya Yamashita

    发明人： Shinichi Takeshima ,  Tetsuya Yamashita

    IPC分类号： B01J21/12 ,  B01J29/06 ,  B01J23/40 ,  B01J21/06

    CPC分类号： B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/20715 ,  B01D2255/20776 ,  B01D2255/50 ,  B01J23/38 ,  B01J23/58 ,  B01J23/6527 ,  B01J35/0006 ,  F01N3/0231 ,  F01N3/035 ,  F01N2370/02

    摘要： There is provided a particulate matter combustion catalyst which allows easy combustion of particulate matter collected on the particulate matter filter of a diesel vehicle, at a much lower temperature than by the prior art. The particulate matter combustion catalyst has a construction characterized by an NO oxidation catalyst wherein the catalyst component is carried on an acidic first carrier, and an NO2 decomposition catalyst wherein the catalyst component is carried on a second carrier. Preferably, the NO oxidation catalyst has a precious metal such as platinum carried on an acidic first carrier such as tungstic acid/zirconia, and the NO2 decomposition catalyst has a catalyst component selected from the transition metals carried on a second carrier such as titania, or alternatively, the NO2 decomposition catalyst has at least one metal selected from among alkali metals and alkaline earth metals and a precious metal such as platinum carried on a second carrier such as titania.

    摘要翻译： 提供了一种颗粒物质燃烧催化剂，其在比现有技术低得多的温度下容易地燃烧收集在柴油车辆的颗粒物质过滤器上的颗粒物质。 颗粒物燃烧催化剂具有以NO氧化催化剂为特征的结构，其中催化剂组分承载在酸性第一载体上，和NO 2分解催化剂，其中催化剂组分承载在第二载体上。 优选地，NO氧化催化剂具有携带在酸性第一载体如钨酸/氧化锆上的贵金属如铂，并且NO 2分解催化剂具有选自所携带的过渡金属的催化剂组分 第二载体如二氧化钛，或者NO 2分解催化剂具有至少一种选自碱金属和碱土金属的金属和载于第二载体上的贵金属如铂，例如 二氧化钛

    NOx absorbent and absorption reduction-type NOx purifying catalyst
    4.
    发明授权
    NOx absorbent and absorption reduction-type NOx purifying catalyst 失效
    NOx吸收剂和吸收还原型NOx净化催化剂

    公开(公告)号：US07081431B2

    公开(公告)日：2006-07-25

    申请号：US10363388

    申请日：2001-09-03

    申请人： Tetsuya Yamashita ,  Shinichi Takeshima ,  Toshiaki Tanaka

    发明人： Tetsuya Yamashita ,  Shinichi Takeshima ,  Toshiaki Tanaka

    IPC分类号： B01J23/56 ,  B01J23/00 ,  B01J23/58 ,  B01J23/44 ,  B01J23/42

    CPC分类号： B01J23/63 ,  B01D53/9422 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2063 ,  B01D2255/20715 ,  B01D2255/40 ,  B01J21/066 ,  B01J23/02 ,  B01J23/10 ,  B01J23/58

    摘要： An exhaust gas purifying catalyst capable of exerting excellent NOx purifying capability even at high exhaust gas temperatures, exceeding 500° C., is provided.The catalyst is an absorption reduction-type NOx purifying catalyst comprising an NOx absorbent obtained by loading at least one alkali metal or alkaline earth metal on a crystalline ZrO2 composite oxide having added thereto at least one trivalent rare earth metal or divalent alkaline earth metal. Preferably, aluminum is further supported on the ZrO2 composite oxide. The NOx absorbent is considered to have an NOx absorption mechanism that an electron released from the alkali metal or the like enters into an oxygen vacancy part of the crystalline ZrO2 and this oxygen vacancy part functions as a strong base site for donating an electron to an electrophilic component such as NOx.

    摘要翻译： 提供即使在超过500℃的高废气温度下也能够发挥出优异的NO x X净化能力的废气净化催化剂。 催化剂是通过将至少一种碱金属或碱土金属负载在结晶ZrO 2上而获得的吸收还原型NO x x N 2净化催化剂，其包含NO x 2N复合氧化物中加入至少一种三价稀土金属或二价碱土金属。 优选地，铝进一步负载在ZrO 2复合氧化物上。 认为NO x吸收剂具有从碱金属等释放的电子进入结晶ZrO 2 <！ - SIPO - >这个氧空位部分用作向诸如NO x的亲电组分提供电子的强碱基位点。

    Absorption reduction-type NOx purifying catalyst
    7.
    发明授权
    Absorption reduction-type NOx purifying catalyst 失效
    吸收还原型NOx净化催化剂

    公开(公告)号：US06906002B2

    公开(公告)日：2005-06-14

    申请号：US10362994

    申请日：2001-08-01

    申请人： Shinichi Takeshima ,  Tetsuya Yamashita ,  Toshiaki Tanaka

    发明人： Shinichi Takeshima ,  Tetsuya Yamashita ,  Toshiaki Tanaka

    IPC分类号： F01N3/08 ,  B01D53/56 ,  B01D53/81 ,  B01D53/86 ,  B01D53/94 ,  B01J23/58 ,  B01J23/63 ,  B01J23/652 ,  B01J35/00 ,  B01J37/02 ,  F01N3/10 ,  F01N3/28 ,  B01J29/06 ,  B01J21/00 ,  B01J29/00 ,  B01J23/00 ,  B01J20/00

    CPC分类号： B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2063 ,  B01D2255/20715 ,  B01J23/58 ,  B01J23/63 ,  B01J23/6527 ,  B01J35/0006 ,  B01J37/0242 ,  Y02A50/2348

    摘要： A catalyst able to overcome defects of an absorption reduction-type NOx purifying catalyst, such as poor NOx purifying capability at low temperatures and low SOx desorbing property, is provided.The catalyst is an absorption reduction-type NOx purifying catalyst where NOx absorbent particles and support particles having supported thereon a catalyst component are mixed. Preferably, acidic support particles are added to the support particle, the NOx absorbent particles are a metal oxide having a base point, and the metal oxide is rare earth-added zirconia. In conventional catalysts, the NOx absorbent such as alkali metal having strong basicity exposes the catalyst component present together on the same support to the basic condition to decrease the catalytic performance. However, in the present invention, the NOx absorbent and the support are separate particles, whereby the catalyst component can exert its original catalytic performance and, as a result, the NOx purifying capability at low temperatures and the SOx desorbing property are improved.

    摘要翻译： 能够克服吸收还原型NO x x H净化催化剂的缺陷的催化剂，例如在低温和低SO x x 2+纯化催化剂的低纯度能力下， SUB>解吸属性。 该催化剂是吸收还原型NO x X 2净化催化剂，其中将NO x吸收剂颗粒和负载有催化剂组分的载体颗粒混合。 优选地，将酸性载体颗粒加入到载体颗粒中，NO x吸收颗粒是具有基点的金属氧化物，并且金属氧化物是稀土添加的氧化锆。 在常规催化剂中，具有强碱性的碱金属的NO x吸收剂将催化剂组分一起存在于与碱性条件相同的载体上以降低催化性能。 然而，在本发明中，NO x吸收剂和载体是分离的颗粒，由此催化剂组分可以发挥其最初的催化性能，结果是NO x >低温下的净化能力和SO x x解吸性能得到改善。

    Device for purifying exhaust gas of engine
    8.
    发明授权
    Device for purifying exhaust gas of engine 失效
    发动机排气净化装置

    公开(公告)号：US6058700A

    公开(公告)日：2000-05-09

    申请号：US83738

    申请日：1998-05-22

    申请人： Tetsuya Yamashita ,  Toshiaki Tanaka ,  Shinichi Takeshima ,  Shinya Hirota ,  Eiji Iwasaki ,  Kouji Yoshizaki ,  Nobumoto Ohashi ,  Kazuhiro Itoh

    发明人： Tetsuya Yamashita ,  Toshiaki Tanaka ,  Shinichi Takeshima ,  Shinya Hirota ,  Eiji Iwasaki ,  Kouji Yoshizaki ,  Nobumoto Ohashi ,  Kazuhiro Itoh

    IPC分类号： F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F02D41/02 ,  F02D41/04 ,  F01N3/00

    CPC分类号： F01N3/0842 ,  F02D41/0275 ,  F02D41/028 ,  F01N2570/04 ,  F02D2200/0806

    摘要： A device for purifying the exhaust gas of an engine comprises a NO.sub.X absorbent arranged in the exhaust passage. The NO.sub.X absorbent absorbs NO.sub.X therein when the air-fuel ratio of the inflowing exhaust gas is lean, and releases the absorbed NO.sub.X therefrom when the oxygen concentration in the inflowing exhaust gas becomes lower. The NO.sub.X absorbent also absorbs SO.sub.X therein when the air-fuel ratio of the inflowing exhaust gas is lean, and releases the absorbed SO.sub.X therefrom when the oxygen concentration in the inflowing exhaust gas becomes lower, with the temperature of the NO.sub.X absorbent being higher than a SO.sub.X releasing temperature. The air-fuel ratio of the exhaust gas flowing to the NO.sub.X absorbent is made rich temporarily when the temperature of the NO.sub.X absorbent is higher than SO.sub.X releasing temperature and when the flow rate of the exhaust gas flowing through the NO.sub.X absorbent is lower than a predetermined flow rate, to release the absorbed SO.sub.X from the NO.sub.X absorbent.

    摘要翻译： 用于净化发动机废气的装置包括布置在排气通道中的NO x吸收剂。 当流入的废气的空燃比是稀的时，NO x吸收剂吸收其中的NOX，并且当流入的废气中的氧浓度变低时，释放吸收的NO x。 当流入的废气的空燃比是稀的时，NOX吸收剂也吸收SO x，并且当流入废气中的氧浓度变低时，NOX吸收剂的温度高于 SOX释放温度。 当NOX吸收剂的温度高于SOX释放温度时，当流过NOX吸收剂的排气的流量低于预定的NO x吸收剂时，流入NOX吸收剂的排气的空燃比暂时变浓 流量，从NOX吸收剂中释放吸收的SOX。