Catalyst for purification of exhaust gases
    1.
    发明授权
    Catalyst for purification of exhaust gases 失效
    用于净化废气的催化剂

    公开(公告)号:US5459119A

    公开(公告)日:1995-10-17

    申请号:US192745

    申请日:1994-02-07

    摘要: A catalyst for purification of exhaust gases, comprising a monolithic carrier and a catalyst layer formed thereon for reduction of the carbon monoxide, hydrocarbons and nitrogen oxides emitted from internal combustion engines, wherein (1) the catalyst layer contains catalyst particles each comprising a heat-resistant inorganic oxide and at least one noble metal selected from Pt, Pd and Rh, loaded thereon, (2) the catalyst layer contains, as a whole, three noble metals of Pt, Pd and Rh, (3) the catalyst layer contains, at any position ranging from the outer surface to the midpoint of the thickness, catalyst particles comprising a heat-resistant inorganic oxide and 2-10% by weight, based on the inorganic oxide, of Pd loaded thereon, and (4) the catalyst layer has, at the outer surface, exposed catalyst particles comprising an heat-resistant inorganic oxide and at least Rh loaded thereon.

    摘要翻译: 一种用于净化废气的催化剂,包括整体式载体和形成在其上的催化剂层,用于减少从内燃机排放的一氧化碳,烃类和氮氧化物,其中(1)催化剂层含有各自含有 耐火无机氧化物和至少一种选自Pt,Pd和Rh的贵金属,(2)催化剂层总体上含有Pt,Pd和Rh三种贵金属,(3)催化剂层含有, 在从外表面到厚度中点的任何位置处,催化剂颗粒包含耐热无机氧化物和基于无机氧化物的2-10重量%的负载Pd的载体,和(4)催化剂层 在外表面具有包含耐热无机氧化物和至少负载有Rh的暴露的催化剂颗粒。

    Catalyst-adsorbent for purification of exhaust gases and method for purification of exhaust gases
    3.
    发明授权
    Catalyst-adsorbent for purification of exhaust gases and method for purification of exhaust gases 失效
    用于净化废气的催化剂 - 吸附剂和废气净化方法

    公开(公告)号:US06667018B2

    公开(公告)日:2003-12-23

    申请号:US08579907

    申请日:1995-12-28

    IPC分类号: B01J802

    摘要: A catalyst-adsorbent for purification of exhaust gases, including a monolithic carrier and a catalyst-adsorbent layer formed thereon, the catalyst-adsorbent layer including a catalyst for reduction of the carbon monoxide, hydrocarbons and nitrogen oxides emitted from internal combustion engines and an adsorbent for reduction of the hydrocarbons emitted during cold start of the engines. The catalyst is composed mainly of catalyst particles each including a heat-resistant inorganic oxide and at least one noble metal selected from Pt, Pd and Rh, loaded thereon, the catalyst containing at least catalyst particles each comprising a heat-resistant inorganic oxide and 2-30% by weight, based on the oxide, of Pd loaded thereon, the adsorbent comprising adsorbent particles composed mainly of zeolite.

    摘要翻译: 用于净化废气的催化剂 - 吸附剂,包括整体式载体和形成在其上的催化剂 - 吸附剂层,催化剂 - 吸附剂层包括用于还原一氧化碳的催化剂,从内燃机排放的烃和氮氧化物和吸附剂 用于减少在发动机冷起动期间排出的烃。 催化剂主要由催化剂颗粒组成,催化剂颗粒各自包含耐热无机氧化物和至少一种选自Pt,Pd和Rh的贵金属,负载在其上,催化剂至少包含催化剂颗粒,每个催化剂颗粒包含耐热无机氧化物和2 -30重量%,基于氧化物,其上载有Pd,吸附剂包括主要由沸石组成的吸附剂颗粒。

    Catalyst composition for purification of exhaust gas, catalyst for
purification of exhaust gas, and process for producing said catalyst
    5.
    发明授权
    Catalyst composition for purification of exhaust gas, catalyst for purification of exhaust gas, and process for producing said catalyst 失效
    用于净化排气的催化剂组合物,用于净化排气的催化剂和用于生产催化剂的方法

    公开(公告)号:US5164350A

    公开(公告)日:1992-11-17

    申请号:US646363

    申请日:1991-01-28

    摘要: A catalyst composition for purification of exhaust gas, including (a) high-silica zeolite having a Si/Al ratio of 40 or more, subjected to ion exchange with at least one metal selected from Pt, Pd, Rh, Ir and Ru, and (b) a heat-resistant oxide containing at least one metal selected from Pt, Pd, Rh, Ir and Ru; a catalyst for purification of exhaust gas, including a monolith carrier and the catalyst composition supported on the carrier; and a process for producing the catalyst. The catalyst has high activity for exhaust gas purification even when the catalyst contains Rh--, --, which is an expensive catalyst component, in a very small amount.

    摘要翻译: 一种用于净化废气的催化剂组合物,其包括(a)Si / Al比为40以上的高二氧化硅沸石与选自Pt,Pd,Rh,Ir和Ru中的至少一种金属进行离子交换,以及 (b)含有选自Pt,Pd,Rh,Ir和Ru中的至少一种金属的耐热氧化物; 用于净化废气的催化剂,包括整料载体和负载在载体上的催化剂组合物; 和催化剂的制造方法。 即使催化剂含有极少量的昂贵的催化剂组分Rh - , - ,催化剂也具有较高的废气净化活性。

    Catalyst for exhaust gas purification and process for production thereof
    7.
    发明授权
    Catalyst for exhaust gas purification and process for production thereof 失效
    废气净化用催化剂及其制造方法

    公开(公告)号:US5439865A

    公开(公告)日:1995-08-08

    申请号:US59595

    申请日:1993-05-12

    摘要: A catalyst for exhaust gas purification, comprising a heat-resistant inorganic monolith carrier and a catalyst layer loaded thereon, the catalyst layer including a catalyst composition containing at least one noble metal selected from Pt, Pd and Rh, as an active catalyst component, and active alumina. The catalyst composition has a specific surface area of at least 50 m.sup.2 /g and a porosity of at least 50%. This catalyst for exhaust gas purification contains noble metal(s) in a well dispersed state, has excellent high-temperature durability, and is low in thermal deterioration of catalyst performance. Hence, the catalyst can be suitably used as a converter installed in engine manifolds of gasoline engine automobiles, or as a heater having improved purification ability for the exhaust gases emitted from automobiles during their cold start.

    摘要翻译: 一种用于排气净化的催化剂,包括耐热无机整料载体和负载在其上的催化剂层,所述催化剂层包括含有至少一种选自Pt,Pd和Rh的贵金属作为活性催化剂组分的催化剂组合物,以及 活性氧化铝。 催化剂组合物具有至少50m 2 / g的比表面积和至少50%的孔隙率。 该废气净化用催化剂含有良好分散状态的贵金属,具有优异的高温耐久性,催化剂性能的热劣化低。 因此,催化剂可以适合用作安装在汽油发动机汽车的发动机歧管中的转炉,或者作为在冷起动期间从汽车排出的废气的净化能力提高的加热器。

    Plasma reaction vessel, and method of producing the same
    10.
    发明申请
    Plasma reaction vessel, and method of producing the same 失效
    等离子体反应容器及其制造方法

    公开(公告)号:US20090196800A1

    公开(公告)日:2009-08-06

    申请号:US12382099

    申请日:2009-03-09

    IPC分类号: B01J19/08

    摘要: In the plasma reaction vessel (1) of the invention, two or more laminate-structures (6) having ceramic formed bodies (3, 4) in which a plasma generating electrode (2) capable of generating plasma is formed in two-tape-form, and an electrically continuous film-like electrically conductive electrode (5) held between the two ceramic formed bodies (3, 4) are formed in such a manner as to form a plasma generating space (7) containing mutual laminate planes therein. Of the electrically conductive electrodes (5), adjacent ones are capable of having electric discharge produced therebetween so as to generate the plasma in the plasma generating space (7) and of generating uniform stabilized plasma at low electric power, it being possible to reduce a passage resistance to a gas passing therein.

    摘要翻译: 在本发明的等离子体反应容器(1)中,具有陶瓷成形体(3,4)的两层以上的层压结构体(6),其中能够产生等离子体的等离子体产生电极(2) 形成,并且以这样的方式形成保持在两个陶瓷成形体(3,4)之间的电连续的膜状导电电极(5),以形成其中包含相互层叠平面的等离子体产生空间(7)。 在导电电极(5)中,相邻的导电电极(5)能够在其间产生放电,以在等离子体产生空间(7)中产生等离子体并且在低功率下产生均匀稳定的等离子体,可以减少 对通过其中的气体的通道阻力。