公开(公告)号：US06500392B2

公开(公告)日：2002-12-31

申请号：US08985206

申请日：1997-12-04

申请人： Hiroshige Mizuno ,  Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi

发明人： Hiroshige Mizuno ,  Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi

IPC分类号： B01D5392

CPC分类号： B01D53/945 ,  B01J23/58 ,  B01J37/0248 ,  F01N3/28 ,  Y02A50/2324 ,  Y02T10/22

摘要： A catalyst for exhaust gas purification is capable of purifying the hydrocarbons, nitrogen oxides and carbon monoxide present in the exhaust gas discharged from an internal combustion engine. The catalyst has a monolithic carrier and a catalyst layer containing Pd, Ba and a heat-resistant inorganic oxide, formed on the carrier. The amount of Pd supported on monolithic carrier is 100-300 g per ft3 of monolithic carrier (3.53×10−3 to 1.06×10−2 g per cc of monolithic carrier), the amount of Ba supported on monolithic carrier is 0.010-0.060 g per cc of monolithic carrier in terms of BaO, and the weight ratio of Pd and Ba as expressed as BaO is 1:2 to 1:10. This catalyst for exhaust gas purification is superior particularly in hydrocarbon purification for a low-temperature fuel-rich exhaust gas (such as exhaust gas emitted during cold start) of automobile.

摘要翻译： 用于排气净化的催化剂能够净化从内燃机排出的废气中存在的烃，氮氧化物和一氧化碳。 催化剂具有整体式载体和在载体上形成的含有Pd，Ba和耐热无机氧化物的催化剂层。 在整体式载体上负载的Pd的量为100-300g / ft 3的整体式载体（3.53×10 -3至1.06×10 -2 g / cc的整体式载体），负载在单片载体上的Ba的量为0.010-0.060g / cc的整体载体，BaO表示的Pd和Ba的重量比为1:2〜1:10。 用于排气净化的催化剂在汽车的低温富油废气（例如冷启动时排出的废气）的碳氢化合物净化中尤其优异。

公开(公告)号：US06517785B2

公开(公告)日：2003-02-11

申请号：US09120888

申请日：1998-07-23

申请人： Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi ,  Hiroshige Mizuno

发明人： Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi ,  Hiroshige Mizuno

IPC分类号： B01D5394

CPC分类号： F01N3/0835 ,  B01D53/9486 ,  B01D2253/108 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  F01N3/0814

摘要： A system for exhaust gas purification disposed in the exhaust pipe of an internal combustion engine, includes (1) an adsorbent comprising a monolithic carrier and (2) an adsorbent component having a hydrocarbon adsorptivity, loaded on the carrier, and a catalyst comprising a monolithic carrier and a catalyst component loaded on the carrier, having a purifiability for the harmful substances present in the exhaust gas emitted from the engine. The catalyst is provided downstream of the adsorbent in the flow direction of the exhaust and it can remove the hydrocarbons generated during engine cold gas. The adsorbent has a sectional shape satisfying the following relation: 1.2≦(major axis)/(minor axis)≦6.5 This system enables the desorption of hydrocarbons from the adsorbent in a longer time and can remove the hydrocarbon generated during engine cold start at a higher purification ratio.

摘要翻译： 一种设置在内燃机的排气管中的废气净化系统，包括（1）包含整体式载体的吸附剂和（2）负载在载体上的具有烃吸附性的吸附剂成分，以及包含单片 载体和负载在载体上的催化剂组分，对从发动机排放的废气中存在的有害物质具有可净化性。 催化剂在排气的流动方向上设置在吸附剂的下游，并且可以除去在发动机冷气体期间产生的烃。 吸附剂具有满足以下关系的截面形状：该系统能够在更长时间内从吸附剂中解吸烃，并且可以以较高的净化比除去发动机冷起动期间产生的烃。

公开(公告)号：US06139808A

公开(公告)日：2000-10-31

申请号：US985523

申请日：1997-12-05

申请人： Hiroshige Mizuno ,  Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi

发明人： Hiroshige Mizuno ,  Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/58 ,  B01J37/02 ,  B01D53/34 ,  B01D53/92 ,  F01N3/20

CPC分类号： B01D53/945 ,  B01J23/58 ,  B01J37/0215 ,  Y02T10/22

摘要： A catalyst for exhaust gas purification is capable of purifying the hydrocarbons, nitrogen oxides and carbon monoxide present in the exhaust gas discharged from an internal combustion engine. The catalyst has a carrier and a catalyst layer containing at least one kind of noble metal, Ba and Cs, formed on the carrier. This catalyst for exhaust gas purification is improved in hydrocarbon purification ability for a low-temperature fuel-rich exhaust gas (such as exhaust gas emitted during cold start) of automobile.

摘要翻译： 用于排气净化的催化剂能够净化从内燃机排出的废气中存在的烃，氮氧化物和一氧化碳。 催化剂具有载体和催化剂层，该载体和载体上形成有至少一种贵金属Ba和Cs。 用于废气净化的催化剂对于汽车的低温富燃料废气（例如冷启动时排放的废气）的烃净化能力提高。

公开(公告)号：US06350416B2

公开(公告)日：2002-02-26

申请号：US09093789

申请日：1998-06-09

申请人： Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi ,  Hiroshige Mizuno

发明人： Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi ,  Hiroshige Mizuno

IPC分类号： B01D5334

CPC分类号： B01D53/945 ,  B01D2255/912 ,  F01N3/0814 ,  F01N3/0835 ,  F01N13/009 ,  Y02T10/22

摘要： A system for exhaust gas purification disposed in the exhaust pipe of an internal combustion engine, includes an adsorbent formed by loading, on a monolithic carrier, (1) a zeolite containing at least one kind of ion of an element having an electronegativity of 1.40 or more and (2) a catalyst material formed by loading at least one kind of noble metal selected from Pt, Pd and Rh on a heat-resistant inorganic oxide, and at least one loaded carrier formed by loading, on a monolithic carrier, a catalyst component having a purifiability for the harmful substances present in the exhaust gas emitted from the engine and/or an adsorbent component having an adsorptivity for the hydrocarbons also present in the exhaust gas, the loaded carrier being provided upstream of the adsorbent in the flow direction of the exhaust gas and having a total volume of 0.6 l or more. In this system for exhaust gas purification, the thermal deterioration of the adsorbent is reduced because there is used an adsorbent of higher HC desorption start temperature and because the thermal load applied to the adsorbent is decreased by the use of a particular means.

摘要翻译： 一种设置在内燃机的排气管中的废气净化系统，包括通过在整体式载体上装载（1）含有至少一种具有1.40的电负性的元素的离子的沸石形成的吸附剂，或 更多和（2）通过将选自Pt，Pd和Rh中的至少一种贵金属负载在耐热无机氧化物上形成的催化剂材料，以及通过在整体式载体上负载催化剂形成的至少一种负载载体 具有对从发动机排出的排气中存在的有害物质具有可净化性的成分和/或对废气中也存在的具有对烃的吸附性的吸附剂成分，负载载体在吸附剂的流动方向上游侧设置 废气，总体积为0.6l以上。 在这种废气净化系统中，由于使用HC解吸开始温度较高的吸附剂，因为通过使用特定的方法降低了对吸附剂的热负荷，所以吸附剂的热劣化降低。

公开(公告)号：US6029441A

公开(公告)日：2000-02-29

申请号：US985205

申请日：1997-12-04

申请人： Hiroshige Mizuno ,  Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi

发明人： Hiroshige Mizuno ,  Naomi Noda ,  Yukinari Shibagaki ,  Akira Takahashi

IPC分类号： B01D53/34 ,  B01D53/72 ,  B01D53/86 ,  B01D53/94 ,  B01J20/18 ,  B01J23/40 ,  F01N3/08 ,  F01N3/20 ,  F01N3/22 ,  F01N13/02

CPC分类号： F01N3/0835 ,  B01D53/9486 ,  F01N13/009 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/2013 ,  F01N3/22 ,  B01D2255/2045 ,  B01D2255/2047 ,  B01D2255/20738 ,  B01D2255/20784 ,  F01N2250/12 ,  Y02T10/26

摘要： A method for exhaust gas purification using an exhaust gas purification system including (a) an adsorbent for adsorbing hydrocarbons in internal combustion engine exhaust gas provided in the engine exhaust pipe, (b) at least one catalyst for reducing harmful substances present in the exhaust gas, provided in the exhaust pipe upstream of the adsorbent in the flow direction of the exhaust gas, (c) at least one catalyst for reducing harmful substances present in the exhaust gas, provided in the exhaust pipe down-stream of the adsorbent in the flow direction of the exhaust gas, (d) a first inlet for introduction of secondary air into exhaust gas, formed in the exhaust pipe upstream of the most downstream catalyst of the catalyst (b), and (e) a second inlet for introduction of secondary air into exhaust gas, formed in the exhaust pipe between the catalyst (b) and the most downstream catalyst of the catalyst (c). Secondary air is introduced from the first inlet at a time from engine start to activation of catalyst (b); when catalyst (b) has been activated, stopping secondary air introduction from the first inlet; meanwhile, introducing secondary air from the second inlet while the hydrocarbons of exhaust gas adsorbed by adsorbent (a) are desorbed therefrom as its temperature rises by the heat of the exhaust gas. This method effectively purifies the hydrocarbons discharged from an internal combustion engine in a large amount during cold start, without adversely affecting the purification of also-discharged NOx.

摘要翻译： 一种排气净化系统的废气净化方法，所述排气净化系统包括：（a）在所述发动机排气管内设置的内燃机废气中吸附烃的吸附剂，（b）至少一种用于还原废气中存在的有害物质的催化剂 ，设置在排气管的上游侧的吸附剂上游侧，（c）至少一个催化剂，其用于减少排气中存在的有害物质，该催化剂设置在流体中的吸附剂的下游侧的排气管 （d）用于将二次空气引入排气中的第一入口，形成在催化剂（b）的最下游催化剂​​上游的排气管中，和（e）用于引入二次空气的第二入口 在催化剂（b）和催化剂（c）的最下游催化剂​​之间的排气管中形成空气。 从发动机启动到催化剂（b）活化的时候，从第一入口引入二次空气; 当催化剂（b）已经被活化时，停止从第一入口引入二次空气; 同时，当吸附剂（a）吸附的废气的碳氢化合物随着废气的热量升高而从第二入口引入二次空气时，其被排出。 该方法在冷起动时有效地净化从内燃机排出的烃，而不会对排出的NOx的净化产生不利影响。

公开(公告)号：US5884473A

公开(公告)日：1999-03-23

申请号：US668208

申请日：1996-06-19

申请人： Naomi Noda ,  Yukinari Shibagaki ,  Hiroshige Mizuno ,  Akira Takahashi

发明人： Naomi Noda ,  Yukinari Shibagaki ,  Hiroshige Mizuno ,  Akira Takahashi

IPC分类号： B01D53/72 ,  B01D53/56 ,  B01D53/81 ,  B01D53/86 ,  B01D53/94 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  F01N3/08 ,  F01N3/28 ,  F01N3/10 ,  B01J8/02

CPC分类号： B01D53/9481 ,  B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  F01N3/0835 ,  F01N3/0842 ,  F01N2240/18 ,  F01N2570/12 ,  Y02T10/22

摘要： A system for exhaust gas purification disposed in the exhaust pipe of an internal combustion engine, includes followings (i) a catalyst giving an excellent light-off performance at low temperatures, including a carrier and a catalyst layer supported thereon, the catalyst layer including a precious metal and a substance having an electron donatability and/or a nitrogen dioxide absorbability and releasability, and (ii) an adsorbent comprising a carrier and an adsorbent layer having a hydrocarbon adsorbability, supported on the carrier. This system for exhaust gas purification can effectively purify the harmful substances contained in the exhaust gases discharged from internal combustion engines of automobiles, etc., particularly the hydrocarbons discharged in a large amount from a gasoline engine during cold start.

摘要翻译： 一种设置在内燃机的排气管内的废气净化系统，包括以下（i）在低温下具有优异的起火性能的催化剂，其包括载体和负载在其上的催化剂层，所述催化剂层包括 贵金属和具有电子不足性和/或二氧化氮吸收性和脱模性的物质，和（ii）负载在载体上的载体和具有烃吸附性的吸附剂的吸附剂。 这种废气净化系统能够有效地净化汽车内燃机等排出的废气中所含的有害物质，特别是在冷起动时从汽油发动机大量排出的烃。

公开(公告)号：US5427601A

公开(公告)日：1995-06-27

申请号：US767889

申请日：1991-09-30

申请人： Takashi Harada ,  Yoshihiro Fujiwara ,  Fumio Abe ,  Tsuneaki Ohashi ,  Hiroshige Mizuno ,  Kevin R. Brundage ,  Srinivas H. Swaroop ,  David F. Thompson ,  Raja R. Wusirika ,  David S. Weiss

发明人： Takashi Harada ,  Yoshihiro Fujiwara ,  Fumio Abe ,  Tsuneaki Ohashi ,  Hiroshige Mizuno ,  Kevin R. Brundage ,  Srinivas H. Swaroop ,  David F. Thompson ,  Raja R. Wusirika ,  David S. Weiss

IPC分类号： B22F1/00 ,  B01D53/94 ,  B01J23/86 ,  B22F3/11 ,  B22F5/00 ,  C22C32/00 ,  C22C33/02 ,  C22C38/00 ,  C22C29/12 ,  B22F3/00

CPC分类号： C22C32/0026 ,  B01D53/945 ,  B01J23/862 ,  C22C33/0285 ,  Y02T10/22 ,  Y10T428/12611

摘要： A sintered metal body is disclosed of composition consisting essentially of in weight percent about 5 to 40 Cr, about 2 to 30 Al, 0 to about 5 special metal, 0 to about 4 rare earth oxide additive, and the balance Fe group metal and unavoidable impurities,the composition including at least one component selected from component A and/or component B, component A being special metal, and component B being at least an effective amount of rare earth oxide additive,the special metal being a first special metal component, and optionally, a second special metal component when rare earth oxide additive is 0, the first special metal component consisting of at least one of: Y, lanthanides, Zr, Hf, Ti, Si, and B, and the second special metal component consisting of at least one of: alkaline earth metal, Cu, and Sn, and the special metal being a third special metal component when rare earth oxide additive is >0, the third special metal component consisting of at least one of Y, lanthanides, Zr, Hf, Ti, Si, alkaline earth metal, B, Cu, and Sn.The body is excellent in oxidation resistance at high temperatures, heat resistance, and corrosion resistance, and can be suitably used by itself as a carrier for catalysts, for exhaust gas purification, etc., or as a monolith catalyst comprising catalyst carrier and catalyst supported thereon, and as a heater or catalytic converter by providing electrodes on the body.

摘要翻译： 公开了一种烧结金属体，其组成主要包括重量百分比约5至40 Cr，约2至30种Al，0至约5种特殊金属，0至约4种稀土氧化物添加剂，余量为Fe族金属，不可避免 杂质，所述组合物包含选自组分A和/或组分B中的至少一种组分，组分A为特殊金属，组分B为至少有效量的稀土氧化物添加剂，所述特殊金属为第一特殊金属组分， 以及任选地，当稀土氧化物添加剂为0时的第二特殊金属组分，所述第一特殊金属组分由以下中的至少一种组成：Y，镧系元素，Zr，Hf，Ti，Si和B，并且所述第二特殊金属组分 的碱土金属，Cu和Sn中的至少一种，当稀土氧化物添加剂为> 0时，特殊金属是第三种特殊金属组分，第三种特殊金属组分由Y，镧系元素，Zr中的至少一种组成 ， H f，Ti，Si，碱土金属，B，Cu和Sn。 本体在高温下的耐氧化性，耐热性和耐腐蚀性优异，可以适合用作催化剂载体，废气净化等，或作为包含催化剂载体和催化剂的整料催化剂 以及作为加热器或催化转化器，通过在主体上设置电极。

公开(公告)号：US5292485A

公开(公告)日：1994-03-08

申请号：US955247

申请日：1992-10-01

申请人： Takashi Harada ,  Hiroshige Mizuno ,  Fumio Abe ,  Tsuneaki Ohashi

发明人： Takashi Harada ,  Hiroshige Mizuno ,  Fumio Abe ,  Tsuneaki Ohashi

IPC分类号： B01D39/20 ,  B01J35/00 ,  B01J35/04 ,  B22F3/11 ,  F01N3/20 ,  F01N3/28 ,  H05B3/12 ,  F01N3/10 ,  B21D39/00

CPC分类号： B01D39/2093 ,  B01D39/2034 ,  B01J35/0033 ,  B01J35/04 ,  B22F3/1115 ,  F01N3/2026 ,  F01N3/2803 ,  H05B3/12 ,  B01D2239/0478 ,  B01D2239/10 ,  F01N2330/14 ,  Y02T10/26 ,  Y10T428/12042 ,  Y10T428/12056 ,  Y10T428/1234 ,  Y10T428/12611

摘要： A heat-resistant metallic monolith, manufactured by forming metal powders into a honeycomb structure and by sintering the structure, has a heat-resistant metal oxide coated on the surface of the cell walls and that of the pores thereof. Such a heat-resistant metallic monolith is manufactured by mixing metal powders, an organic binder and water to prepare a mixture, by forming the mixture into a shape of a desired honeycomb configuration, by sintering the shape in a non-oxidizing atmosphere at a temperature between 1000.degree. and 1450.degree. C. and then by coating a heat-resistant metal oxide on a surface of the cell walls and that of the pores of the obtained sintered body.

摘要翻译： 通过将金属粉末形成为蜂窝结构体并通过烧结该结构而制造的耐热金属整体，具有涂覆在孔壁表面和孔的表面上的耐热金属氧化物。 通过将金属粉末，有机粘合剂和水混合以制备混合物，通过将混合物形成为所需蜂窝结构的形状，通过在非氧化性气氛中在温度下烧结形状来制造这种耐热金属整料 在1000度至1450摄氏度之间，然后通过在所述单元壁的表面和所获得的烧结体的孔的表面上涂覆耐热金属氧化物。

公开(公告)号：US5234668A

公开(公告)日：1993-08-10

申请号：US853005

申请日：1992-03-17

申请人： Takashi Harada ,  Fumio Abe ,  Hiroshige Mizuno

发明人： Takashi Harada ,  Fumio Abe ,  Hiroshige Mizuno

IPC分类号： F01N3/20 ,  H05B3/12

CPC分类号： F01N3/2053 ,  F01N3/2026 ,  H05B3/12 ,  F01N2330/14 ,  Y02T10/26 ,  Y10S55/30 ,  Y10T428/24149

摘要： A catalytic converter suitable for use in controlling automotive exhaust emissions including honeycomb heaters which are respectively disposed upstream and downstream of a main monolithic catalyst. Each honeycomb heater includes a honeycomb structure with at least two electrodes provided thereon to supply a current to the honeycomb structure.

摘要翻译： 一种适用于控制汽车排气排放的催化转化器，包括蜂窝式加热器，其分别设置在主单片催化剂的上游和下游。 每个蜂窝式加热器包括蜂窝结构，其中设置有至少两个电极以向蜂窝结构提供电流。

公开(公告)号：US5200154A

公开(公告)日：1993-04-06

申请号：US581985

申请日：1990-09-14

申请人： Takashi Harada ,  Fumio Abe ,  Hiroshige Mizuno

发明人： Takashi Harada ,  Fumio Abe ,  Hiroshige Mizuno

IPC分类号： F01N3/20 ,  H05B3/03 ,  H05B3/12

CPC分类号： F01N3/2026 ,  H05B3/12 ,  Y02T10/26

摘要： A honeycomb heater having integrally formed and/or integrally sintered electrodes comprises a honeycomb structure having a desired honeycomb configuration, and electrodes which are integrally sintered with the honeycomb structure at predetermined positions thereon. The honeycomb heater having integrally sintered is manufactured by joining or contacting the electrode-like formed bodies to the formed honeycomb body, and then by sintering the formed honeycomb body with the electrode-like formed bodies attached or contacted thereto. The electrodes are made of the same material as that of the honeycomb body, or of a material having an electric resistance lower than that of the material comprising the honeycomb body. Alternatively, the honeycomb heater having integrally formed and integrally sintered electrodes is manufactured by preparing an extrusion of a honeycomb body as one body which has a honeycomb configuration and an electrode-like shape at predetermined positions thereon, and then sintering that formed honeycomb body.