Intermetallic catalyst
    2.
    发明授权
    Intermetallic catalyst 失效
    金属间催化剂

    公开(公告)号:US4197217A

    公开(公告)日:1980-04-08

    申请号:US930014

    申请日:1978-08-01

    摘要: This invention relates to catalysts suitable for the catalytic oxidation of hydrocarbons and carbon monoxide and for the catalytic reduction of oxides of nitrogen in the presence, respectively, of suitable oxidizing and reducing means. The invention is especially concerned with catalysts which are suitable for the catalytic purification or control of the exhaust gases of petrol driven internal combustion engines and of diesel engines. Such catalysts have been variously described as "three-way", "polyfunctional" and "multi-functional" catalysts. In more detail a three way catalyst of the invention comprises a substrate having supported thereon at least one intermetallic compound of the general formula A.sub.x B.sub.y where A represents one or more Groups VIII metals having an atomic number not larger than 78; B represents one or more metals of the group consisting of Al, Sc, Y, the lanthanides, Ti, Zr, Hf, V, Nb and Ta and x and y are integers.

    摘要翻译: 本发明涉及适合用于烃和一氧化碳的催化氧化的催化剂和用于在合适的氧化和还原方式存在下催化还原氮氧化物的催化剂。 本发明特别涉及适用于催化净化或控制汽油驱动的内燃机和柴油发动机废气的催化剂。 这些催化剂已经被描述为“三向”,“多官能”和“多功能”催化剂。 更详细地,本发明的三元催化剂包括其上载有至少一种通式AxBy的金属间化合物的基材,其中A表示一种或多种原子数不大于78的VIII族金属; B表示由Al,Sc,Y,镧系元素,Ti,Zr,Hf,V,Nb和Ta组成的组中的一种或多种金属,x和y是整数。

    Platinum group metal-containing alloys
    3.
    发明授权
    Platinum group metal-containing alloys 失效
    铂族金属合金

    公开(公告)号:US4261742A

    公开(公告)日:1981-04-14

    申请号:US76729

    申请日:1979-09-18

    IPC分类号: C22C19/05

    CPC分类号: C22C19/05

    摘要: This invention relates to platinum group metal-containing alloys and to uses of such alloys. In particular, the invention relates to platinum group metal-containing superalloys and to their uses. In particular, superalloys according to the present invention consist apart from impurities, of:(a) 5 to 25 wt % chromium,(b) 2 to 7 wt % aluminium,(c) 0.5 to 5 wt % titanium,(d) at least one of the metals yttrium and scandium present in a total amount of 0101 to 3 wt %,(e) 3 to 15 wt % in total of one or more of the platinum group metals platinum, palladium, rhodium, iridium, osmium and ruthenium and(f) balance nickel.

    摘要翻译: 本发明涉及含铂族金属的合金以及这种合金的用途。 特别地,本发明涉及含铂族金属的超级合金及其用途。 特别地,根据本发明的超级合金除了以下的杂质外:(a)5至25重量%的铬,(b)2至7重量%的铝,(c)0.5至5重量%的钛,(d) 金属钇和钪中的至少一种总量为0101至3重量%,(e)总计为3至15重量%的一种或多种铂族金属铂,钯,铑,铱,锇和钌 和(f)平衡镍。