Packed silver-catalyst bed doped with phosphorus
    33.
    发明授权
    Packed silver-catalyst bed doped with phosphorus 失效
    用磷掺杂的填充银催化剂床

    公开(公告)号:US5985786A

    公开(公告)日:1999-11-16

    申请号:US117538

    申请日:1998-08-05

    摘要: A phosphorus-doped silver catalyst fixed bed is obtainable byI. arranging silver crystals obtained by electrolytic deposition of silver from an aqueous silver salt solution to form a starting silver catalyst fixed bed,II. producing an activated silver catalyst fixed bed from the starting silver catalyst fixed bed by passing through the latter, at from 150 to 800.degree. C., a gas mixture comprising methanol and oxygen (gas mixture M), andIII. bringing the activated silver catalyst fixed bed into contact with from 1 to 20,000 ppm by weight of phosphorus, based on the silver, in the form of a finely divided phosphorus compound having a melting point or decomposition temperature of more than 500.degree. C. (phosphorus compound P).

    摘要翻译: PCT No.PCT / EP97 / 00601 Sec。 371日期:1998年8月5日 102(e)日期1998年8月5日PCT提交1997年2月10日PCT公布。 第WO97 / 30014号公报 日期:1997年8月21日一种磷掺杂的银催化剂固定床可以通过以下方式得到:通过将银溶液从银盐溶液中电沉积得到的银晶形成起始银催化剂固定床。 从起始银催化剂固定床通过后者,在150-800℃,由甲醇和氧气(气体混合物M)和III组成的气体混合物中生成活化的银催化剂固定床。 使活化的银催化剂固定床与1至20,000重量ppm的磷(基于银)接触,其形式为熔点或分解温度高于500℃的细分磷化合物(磷 化合物P)。

    Exhaust gas cleaner comprising supported silver or silver oxide particles
    34.
    发明授权
    Exhaust gas cleaner comprising supported silver or silver oxide particles 失效
    包含负载的银或氧化银颗粒的排气净化器

    公开(公告)号:US5714432A

    公开(公告)日:1998-02-03

    申请号:US434918

    申请日:1995-05-04

    摘要: Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in an amount larger than its stoichiometric amount relative to unburned components in the exhaust gas, by (i) disposing an exhaust gas cleaner in a flow path of the exhaust gas, the exhaust gas cleaner comprising 0.2-15 weight % (on a metal basis) of fine silver or silver oxides having an average diameter of 10-1,000 nm and supported on a porous inorganic oxide; (ii) introducing hydrocarbons and/or oxygen-containing organic compounds into the exhaust gas on the upstream side of the exhaust gas cleaner; and (iii) bringing the exhaust gas into contact with the exhaust gas cleaner at a temperature of 200.degree.-600.degree. C., thereby causing a reaction of nitrogen oxides with the hydrocarbons and/or oxygen-containing organic compounds.

    摘要翻译: 通过(i)在排气的流路中设置废气净化器,将废气中的废气与废气中的未燃烧成分相比,从含有氮氧化物和氧的废气中除去氮氧化物, 包含0.2-15重量%(以金属为基准)的平均直径为10-1000nm的银或银氧化银的负载在多孔无机氧化物上的气体清洁剂; (ii)将碳氢化合物和/或含氧有机化合物引入废气净化器的上游侧的废气中; 和(iii)使排气与废气净化器在200-600℃的温度下接触,从而引起氮氧化物与烃和/或含氧有机化合物的反应。

    Catalyst for the oxidation of hydrogen sulfide and process for the
preparation of the catalyst
    36.
    发明授权
    Catalyst for the oxidation of hydrogen sulfide and process for the preparation of the catalyst 失效
    用于硫化氢氧化的催化剂和催化剂的制备方法

    公开(公告)号:US4640908A

    公开(公告)日:1987-02-03

    申请号:US778680

    申请日:1985-09-23

    申请人: Thierry Dupin

    发明人: Thierry Dupin

    摘要: An improved oxidation catalyst, well adopted for the conversion of H.sub.2 S-containing acid gases at least in part to elemental sulfur, is facilely prepared by (i) hydrothermally treating at least a portion of an active alumina support, and (ii) then impregnating said at least partially hydrothermally treated support with a catalytically effective amount of a catalytically active oxide phase which comprises the oxides of at least one of the metals, Fe, Cu, Ag, W, Co, Ni, Bi, Cr and Cd, with the proviso (iii) that at least one rare earth oxide, alkaline earth metal oxide, zirconium oxide or silica compound, or any precursor compound thereof, is incorporated into the catalyst during either of the steps (i) or (ii).

    摘要翻译: 至少部分地将含H2S的酸性气体转化为元素硫的改进的氧化催化剂通过(i)水热处理至少一部分活性氧化铝载体而容易地制备,和(ii)然后将所述 具有催化有效量的催化活性氧化物相的至少部分水热处理的载体,其包含至少一种金属Fe,Cu,Ag,W,Co,Ni,Bi,Cr和Cd中的至少一种的氧化物,条件是 (iii)在步骤(i)或(ii)中的任一步骤中,将至少一种稀土氧化物,碱土金属氧化物,氧化锆或二氧化硅化合物或其任何前体化合物引入催化剂中。

    Catalyst composition
    38.
    发明授权
    Catalyst composition 失效
    催化剂组成

    公开(公告)号:US4536482A

    公开(公告)日:1985-08-20

    申请号:US667057

    申请日:1984-10-31

    申请人: Peter F. Carcia

    发明人: Peter F. Carcia

    摘要: A catalyst is disclosed wherein a particulate catalyst support has cosputtered on its surface a mixture of a catalytically active metal such as Pt, Pd, Ag, Au, Re, Rh, Ru or Ir and a cosputtered support material which preferably is the same material as the catalyst support.

    摘要翻译: 公开了一种催化剂,其中颗粒催化剂载体在其表面上分散有催化活性金属如Pt,Pd,Ag,Au,Re,Rh,Ru或Ir的混合物,以及分散的载体材料,其优选地与 催化剂载体。