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45 条记录 (耗时 0.031 秒)

    Exhaust gas purifying catalyst and process for producing the same
    33.
    发明授权
    Exhaust gas purifying catalyst and process for producing the same 失效
    废气净化催化剂及其制造方法

    公开(公告)号：US4843056A

    公开(公告)日：1989-06-27

    申请号：US164237

    申请日：1988-03-04

    申请人： Shinichi Matsumoto ,  Naoto Miyoshi ,  Hideaki Muraki ,  Hideo Sobukawa ,  Masayuki Fukui ,  Mareo Kimura ,  Hirofumi Shinjoh

    发明人： Shinichi Matsumoto ,  Naoto Miyoshi ,  Hideaki Muraki ,  Hideo Sobukawa ,  Masayuki Fukui ,  Mareo Kimura ,  Hirofumi Shinjoh

    IPC分类号： B01D53/94 ,  B01J23/56 ,  B01J23/63

    CPC分类号： B01D53/945 ,  B01J23/63 ,  Y02T10/22

    摘要： An exhaust gas purifying catalyst for oxidizing HC and CO and for reducing NOx is provided, which comprises at least one oxide of rare earth element, rhodium, and at least one of platinum and palladium loaded on alumina grains. The major amount of rhodium is dispersed on the oxide of rare earth element. Thus, the rhodium solidification into the alumina grains is prevented. Further, when cerium oxide accompanying lanthanum oxide, neodymium oxide or a mixture thereof is used as the oxide of rare earth element, the sintering of cerium oxide or palladium at a high temperature is suppressed since it forms a complex oxide with lanthanum oxide, neodymium oxide or a mixture thereof. Additionally, when stabilized alumina grains in which a rare earth element and an alkali earth element are present in a solid solution state are used, the deterioration of NOx purifying activity of the catalyst at a high temperature is suppressed. The exhaust gas purifying catalyst of this invention has high durability as well as high activity at a high temperature.

    摘要翻译： 提供一种用于氧化HC和CO并用于还原NOx的废气净化催化剂，其包含至少一种稀土元素氧化物，铑，以及负载在氧化铝颗粒上的铂和钯中的至少一种。 铑的主要量分散在稀土元素的氧化物上。 因此，防止了铑固化成氧化铝颗粒。 此外，当使用伴随氧化镧，氧化钕或其混合物的氧化铈作为稀土元素的氧化物时，氧化铈或钯在高温下的烧结被抑制，因为它与氧化镧，氧化钕形成复合氧化物 或其混合物。 此外，当使用其中以固溶状态存在稀土元素和碱土金属元素的稳定的氧化铝颗粒时，抑制了催化剂在高温下的NOx净化活性的劣化。 本发明的废气净化催化剂在高温下具有高耐久性和高活性。

    Process for purifying exhaust gases
    35.
    发明授权
    Process for purifying exhaust gases 失效
    废气净化工艺

    公开(公告)号：US5922293A

    公开(公告)日：1999-07-13

    申请号：US717924

    申请日：1996-09-23

    申请人： Naoto Miyoshi ,  Mareo Kimura ,  Yuzo Kawai ,  Yoko Kumai

    发明人： Naoto Miyoshi ,  Mareo Kimura ,  Yuzo Kawai ,  Yoko Kumai

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/56 ,  B01J23/58 ,  B01J23/63 ,  B01D53/60

    CPC分类号： B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  Y02T10/22

    摘要： A catalyst for purifying carbon monoxide, hydrocarbons and nitrogen oxides in exhaust gases at the stoichiometric point or in oxygen-rich atmospheres, is disclosed, and it includes a support in which at least one element selected from the group consisting of alkali metals, alkaline-earth metals and rare-earth elements including La is dissolved in titania to form a solid solution, and a noble metal catalyst ingredient loaded on the support. A process for purifying, by bringing the exhaust gases into contact with the catalyst, is also disclosed.

    摘要翻译： 公开了用于在化学计量点或富氧气氛中净化废气中的一氧化碳，烃和氮氧化物的催化剂，其包括载体，其中至少一种选自碱金属，碱金属， 包括La的地球金属和稀土元素溶解在二氧化钛中以形成固溶体，并且负载在载体上的贵金属催化剂成分。 还公开了通过使废气与催化剂接触来净化的方法。

    Oxygen sensor and process for producing same
    36.
    发明授权
    Oxygen sensor and process for producing same 失效
    氧传感器及其制造方法

    公开(公告)号：US4655892A

    公开(公告)日：1987-04-07

    申请号：US758376

    申请日：1985-07-24

    申请人： Kozo Satta ,  Hideo Hasegawa ,  Mareo Kimura

    发明人： Kozo Satta ,  Hideo Hasegawa ,  Mareo Kimura

    IPC分类号： G01N27/409 ,  B05D3/02 ,  B05D5/00 ,  C23C14/18 ,  C23C24/08 ,  F02D33/00 ,  F02D41/14 ,  G01N27/407 ,  G01N27/416 ,  G01N27/46

    CPC分类号： G01N27/4075

    摘要： An oxygen sensor for sensing the oxygen content of an exhaust gas from an automotive engine and a process for producing the same, which sensor is less sensitive to lead poisoning than conventional sensors. In the inventive sensor, a first platinum electrode is formed on the side of a solid electrolyte body exposed to the gas to be detected, and a second electrode is formed on the other side of the electrolyte body. The first electrode comprises a platinum layer and a layer of at least one of rhodium and palladium. Preferably, the layer of rhodium or palladium has a thickness of 10 to 5,000 .ANG..

    摘要翻译： 用于感测来自汽车发动机的废气的氧含量的氧传感器及其制造方法，该传感器比常规传感器对铅中毒的敏感性低。 在本发明的传感器中，在暴露于被检测气体的固体电解质体侧形成有第一铂电极，在电解质体的另一侧形成第二电极。 第一电极包括铂层和铑和钯中的至少一种的层。 优选地，铑或钯的层的厚度为10至5,000埃。

    Method for purifying exhaust gases
    39.
    发明授权
    Method for purifying exhaust gases 失效
    排气净化方法

    公开(公告)号：US5804152A

    公开(公告)日：1998-09-08

    申请号：US551918

    申请日：1995-10-23

    申请人： Naoto Miyoshi ,  Hiromasa Suzuki ,  Osamu Ogawa ,  Mareo Kimura ,  Yuzo Kawai ,  Koji Yokota ,  Naoki Takahashi ,  Toshiyuki Tanaka

    发明人： Naoto Miyoshi ,  Hiromasa Suzuki ,  Osamu Ogawa ,  Mareo Kimura ,  Yuzo Kawai ,  Koji Yokota ,  Naoki Takahashi ,  Toshiyuki Tanaka

    IPC分类号： B01D53/94 ,  B01J23/58 ,  B01J23/63

    CPC分类号： B01D53/9481 ,  B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  Y02T10/22

    摘要： An automotive exhaust catalyst includes a support, which is less likely to adsorb SO.sub.x contained in exhaust gases thereon, an NO.sub.x storage compound loaded on the support, and a noble metal element loaded on the support. The support is an alumina support with a Ti--Zr composite oxide loaded thereon, or is formed of a Ti--Zr or Ti--Zr--Y composite oxide. The composite oxide inhibits the NO.sub.x storage compound, which is selected from alkali metals, alkaline-earth metals and rare-earth elements, from being poisoned by sulfur, and enhances the thermal resistance of the support. Thus, the automotive exhaust catalyst can effectively purify NO.sub.x contained in lean-side exhaust gases, even after it is subjected to a thermal durability test.

    摘要翻译： 汽车尾气催化剂包括不太可能吸附其中排出的SO x的载体，负载在载体上的NOx储存化合物和负载在载体上的贵金属元素。 载体是负载有Ti-Zr复合氧化物的氧化铝载体，或由Ti-Zr或Ti-Zr-Y复合氧化物形成。 复合氧化物抑制从碱金属，碱土金属和稀土元素中选择的NOx储存化合物被硫中毒，提高了载体的耐热性。 因此，即使进行耐热试验，汽车尾气催化剂也能够有效地净化稀薄侧排气中所含的NOx。