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    Catalyst for purifying exhaust gas and exhaust gas purifying method
    1.
    发明授权
    Catalyst for purifying exhaust gas and exhaust gas purifying method 失效
    废气净化催化剂和废气净化方法

    公开(公告)号：US06461579B1

    公开(公告)日：2002-10-08

    申请号：US09555384

    申请日：2000-07-21

    申请人： Ichiro Hachisuka ,  Yasuo Ikeda

    发明人： Ichiro Hachisuka ,  Yasuo Ikeda

    IPC分类号： B01D5394

    CPC分类号： B01D53/945 ,  B01D53/8628 ,  B01J23/002 ,  B01J23/464 ,  B01J23/58 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/023 ,  B01J37/0248 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/11 ,  B01J2523/13 ,  B01J2523/23 ,  B01J2523/25 ,  B01J2523/31 ,  B01J2523/47 ,  B01J2523/48 ,  B01J2523/822 ,  B01J2523/828 ,  B01J2523/3706

    摘要： A catalyst for purifying exhaust of an internal combustion engine is prepared by mixing first powders in which at least Pt is loaded on a first support and second powders in which at least Rh is loaded on a second support and loading NOx occluding material, for example an alkaline-earth metal, alkali metal or rare-earth metal, at least on the first support. In such catalyst, the second support is made of a stabilized zirconia stabilized by alkaline-earth metal or rare-earth element. The second support, having been become alkaline by the alkaline-earth metal or the rare-earth element, is excellent in absorbing performance of the steam (H2O), so that the steam reforming reaction by Rh advances sufficiently. Therefore, the created hydrogen greatly contributes to the reduction of NOx and to the sulfur poisoning prevention of the NOx occluding material. Also, the oxidizing ability of Pt is maintained high, Rh sufficiently exhibits the steam reforming reaction activity and the sulfur poisoning of NOx occluding material is restrained. An exhaust gas from an internal combustion engine is combusted where mixed gas of rich atmosphere containing excessive fuel is supplied to mixed gas of lean atmosphere containing excessive oxygen like a pulse. The exhaust gas is then introduced to the catalyst wherein the exhaust gas is purified.

    摘要翻译： 用于净化内燃机的排气的催化剂是通过混合其中至少将Pt装载在第一载体上的第一种粉末和其中至少将Rh装载在第二载体上的第二种粉末和装载NO x吸留材料，例如 碱土金属，碱金属或稀土金属，至少在第一载体上。 在这种催化剂中，第二载体由稳定的由碱土金属或稀土元素稳定的氧化锆制成。 通过碱土金属或稀土元素变成碱性的第二载体具有优异的蒸气（H 2 O）吸收性能，使得Rh的蒸汽重整反应充分进行。 因此，所产生的氢气大大有助于NOx的还原和防止NOx吸留材料的硫中毒。 此外，Pt的氧化能力保持较高，Rh充分显示出蒸汽重整反应活性，并且抑制了NOx吸留材料的硫中毒。 在含有过量燃料的富含气体的混合气体被供给到含有过量的氧气的稀薄气体的混合气体中的情况下，来自内燃机的废气燃烧。 然后将废气引入催化剂，其中净化废气。

    HYDROGEN SULFIDE PRODUCTION-SUPPRESSING MEMBER AND EXHAUST GAS-PURIFYING CATALYST
    5.
    发明申请
    HYDROGEN SULFIDE PRODUCTION-SUPPRESSING MEMBER AND EXHAUST GAS-PURIFYING CATALYST 审中-公开
    硫化氢生产抑制部件和排气净化催化剂

    公开(公告)号：US20090269253A1

    公开(公告)日：2009-10-29

    申请号：US12159995

    申请日：2007-01-10

    申请人： Ichiro Hachisuka

    发明人： Ichiro Hachisuka

    IPC分类号： B01D53/48

    CPC分类号： B01D53/945 ,  B01D53/8615 ,  B01D2255/206 ,  B01D2257/304 ,  B01J21/063 ,  B01J21/066 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0215 ,  F01N3/0807 ,  F01N3/085 ,  F01N13/0097 ,  F01N2370/02 ,  F01N2510/06 ,  F01N2510/0682 ,  Y02A50/2324 ,  Y02T10/20 ,  Y02T10/22

    摘要： Disclosed herein is a hydrogen sulfide production-suppressing member, comprising: a sulfur-adsorbing portion 2 comprising an oxide comprising at least ceria, the sulfur-adsorbing portion 2 being disposed upstream side of an exhaust gas; and a sulfur-releasing portion 3 being disposed downstream side of the sulfur-adsorbing portion 2 and having surface acidity higher than that of the sulfur-adsorbing portion 2. SOx adsorbed on the sulfur-adsorbing portion is released in a high-temperature zone, but the released SOx, is difficult to adsorb on the sulfur-releasing portion 3, and thus is not adsorbed again. Thus, the production of H2S is suppressed without using environmental loading substances such as nickel.

    摘要翻译： 本发明公开了一种硫化氢生成抑制部件，其特征在于，包括：硫吸附部2，其含有至少包含二氧化铈的氧化物，所述硫吸附部2设置在废气的上游侧; 硫磺吸附部2的下游侧具有硫磺释放部3，表面酸度高于硫吸附部2.硫吸附部上的SOx在高温区域被释放， 但释放的SO x难以吸附在硫释放部3上，因此不再被吸附。 因此，不使用镍等环境负荷物质来抑制H 2 S的生成。

    Catalyst for purifying exhaust gases
    8.
    发明授权
    Catalyst for purifying exhaust gases 失效
    废气净化催化剂

    公开(公告)号：US07056859B2

    公开(公告)日：2006-06-06

    申请号：US10389919

    申请日：2003-03-18

    申请人： Ichiro Hachisuka

    发明人： Ichiro Hachisuka

    IPC分类号： B01J23/00

    CPC分类号： B01D53/945 ,  B01D53/86 ,  B01D2255/102 ,  B01D2255/902 ,  B01D2255/91 ,  B01D2257/404 ,  B01D2257/502 ,  B01D2257/702 ,  B01J23/58 ,  B01J23/6527 ,  B01J27/1856 ,  B01J35/002 ,  B01J37/0242 ,  B01J37/0244 ,  Y02T10/22

    摘要： A catalyst for purifying exhaust gases which can suppress an active ingredient, such as an alkali metal, which reacts with a substrate from moving to the substrate, thereby preventing a decrease in strength such as thermal shock resistance of the substrate. In production, first, a first oxide layer composed mainly of an oxide which has a high reactability with the active ingredient is formed on the substrate. Next, a second oxide layer composed mainly of an oxide which has a low reactability with the active ingredient is formed on the first oxide layer. Then, a catalyst layer loaded at least with a noble metal and the active ingredient is formed on the second oxide layer. This second oxide layer suppresses transfer of the active ingredient and some active ingredient which has passed through the second oxide layer is caught by the first oxide layer owing to its reaction.

    摘要翻译： 一种用于净化废气的催化剂，其能够抑制与基板反应的活性成分（例如碱金属）移动到基板，从而防止基板的耐热冲击性等强度的降低。 在制造中，首先，在基板上形成主要由与活性成分反应性高的氧化物构成的第一氧化物层。 接着，在第一氧化物层上形成有与活性成分反应性低的主要由氧化物构成的第二氧化物层。 然后，在第二氧化物层上形成至少载有贵金属和活性成分的催化剂层。 该第二氧化物层抑制活性成分的转移，并且通过第二氧化物层的一些活性成分由于其反应而被第一氧化物层捕获。