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87 条记录 (耗时 0.013 秒)

    Purification of PGM species from mixtures thereof
    1.
    发明授权
    Purification of PGM species from mixtures thereof 有权
    从其混合物中纯化PGM物质

    公开(公告)号：US08092573B2

    公开(公告)日：2012-01-10

    申请号：US12373438

    申请日：2007-06-28

    申请人： Dmitri Terekhov ,  Nanthakumar Victor-Emmanuel ,  Olujide Olurin ,  Kamran Khozan

    发明人： Dmitri Terekhov ,  Nanthakumar Victor-Emmanuel ,  Olujide Olurin ,  Kamran Khozan

    IPC分类号： C22B3/44 ,  C22B11/00

    CPC分类号： C22B5/20 ,  C22B11/02 ,  C22B11/021 ,  C22B11/06 ,  Y02P10/214

    摘要： A process for the production of a purified PGM selected from the group consisting of platinum and rhodium from an impure PGM source, the process comprising (a) obtaining an anhydrous PGM halide from the impure PGM source; (b) treating the PGM halide with carbon monoxide at an effective temperature; pressure and time to form the PGM carbonyl halide; and (c) (i) wherein the PGM is platinum, heating the platinum carbonyl halide at an effective platinum decomposition temperature to produce the purified platinum; (ii) wherein the PGM is rhodium, heating the rhodium halide at an effective rhodium decomposition temperature to produce the purified rhodium; and (iii) wherein the platinum carbonyl carbonyl halide and the rhodium carbonyl halide are in a gaseous mixture, effecting step (i) at a temperature lower than the rhodium effective decomposition temperature prior to effecting step (ii). The process is of particular value in the recovery and recycle of PGM materials from vehicle exhaust catalytic converters.

    摘要翻译： 一种从不纯的PGM源生产选自铂和铑的纯化PGM的方法，该方法包括（a）从不纯的PGM源获得无水PGM卤化物; （b）在有效温度下用一氧化碳处理PGM卤化物; 压力和时间形成PGM羰基卤化物; 和（c）（i）其中PGM是铂，在有效的铂分解温度下加热铂羰基卤化物以产生纯化的铂; （ⅱ）其中PGM是铑，在有效的铑分解温度下加热卤化铑以产生纯化的铑; 和（iii）其中所述铂羰基羰基卤化物和所述卤化铑为气态混合物，在进行步骤（ii）之前，在低于所述铑有效分解温度的温度下进行步骤（i）。 该方法对于从车辆尾气催化转化器中回收和回收PGM材料具有特殊的价值。

    Process for producing ultrafine metal powder
    2.
    发明授权
    Process for producing ultrafine metal powder 失效
    超细金属粉末生产工艺

    公开(公告)号：US4808216A

    公开(公告)日：1989-02-28

    申请号：US184280

    申请日：1988-04-21

    申请人： Yoshiteru Kageyama ,  Yoshiaki Sawada

    发明人： Yoshiteru Kageyama ,  Yoshiaki Sawada

    IPC分类号： B22F9/30 ,  C22B5/20 ,  G11B5/84 ,  H01F1/06 ,  H01F41/22

    CPC分类号： H01F1/06 ,  B22F9/305 ,  C22B5/20 ,  G11B5/8416 ,  H01F41/22

    摘要： In a process for producing an ultrafine powder of a metal by subjecting a transition metal carbonyl compound to gas phase pyrolysis reaction, the improvement which comprises diluting said carbonyl compound with an inert gas or hydrogen to a concentration of 3 vol. % or less with optional addition of an oxygen-containing organic compound and/or a sulfur-containing organic compound in an amount of 0.0001 to 0.1 mol per mol of said carbonyl compound to prepare a gas mixture, and then carrying out gas phase pyrolysis reaction at 300.degree. C. or higher by allowing said gas mixture to reside for 5 seconds or less in a reaction system to which a magnetic field of 100 gauss or higher is being applied, thereby obtaining the ultrafine powder of said metal having a length of 1 micron or less, a coercive force of 800 oersted or higher and a saturation magnetization of 120 emu/g or higher.

    Apparatus for decomposition of metal carbonyls
    3.
    发明授权
    Apparatus for decomposition of metal carbonyls 失效
    用于分解金属碳的装置

    公开(公告)号：US3800740A

    公开(公告)日：1974-04-02

    申请号：US3800740D

    申请日：1972-12-14

    申请人： INT NICKEL CO

    发明人： ROBINSON R

    IPC分类号： B22F9/30 ,  C22B5/20 ,  C23C16/442 ,  C23C13/08

    CPC分类号： B22F9/305 ,  C22B5/20 ,  C23C16/442 ,  Y10S118/05

    摘要： Fluid bed reactors for decomposing metal carbonyls and comprising a vertically disposed, elongated vessel for confining a bed of fluidized particulate material are provided with heating coils, that can be heat exchange coils through which heating fluid is passed or electrical resistance heating coils, in the lower part of the reactor and fluidized bed so that the lower portion of the fluidized bed functions as a heating region while the upper portion functions as a decomposing zone. The lower and upper portions of the fluidized bed are volumetrically proportioned to provide substantially equal gas velocities to promote conveyance of heated particulate material from the heating region to the decomposing region. A process for decomposing metal carbonyls is also disclosed in which separate heating and decomposing regions in a fluidized bed are established and a metal carbonyl is introduced into the decomposing region via a water-cooled lance to be decomposed on heated particulate material.

    摘要翻译： 用于分解金属羰基并且包括用于限制流化颗粒材料床的垂直布置的细长容器的流化床反应器设置有加热线圈，其可以是加热流体通过的热交换盘管或电阻加热盘管 反应器和流化床的一部分，使得流化床的下部用作加热区，而上部用作分解区。 流化床的下部和上部的体积成比例地提供基本相等的气体速度，以促进加热的颗粒材料从加热区域向分解区域的输送。 还公开了一种用于分解金属羰基化物的方法，其中在流化床中建立单独的加热和分解区域，并且通过水冷喷枪将金属羰基引入分解区域，以在加热的颗粒材料上分解。

    Distribution of pellets
    4.
    发明授权
    Distribution of pellets 失效
    分散片

    公开(公告)号：US3779795A

    公开(公告)日：1973-12-18

    申请号：US3779795D

    申请日：1971-06-23

    申请人： INT NICKEL CO

    发明人： EVANS D ,  BOWEN SIMPSON A

    IPC分类号： C22B5/20 ,  C22B23/06 ,  B44D1/02 ,  C23C11/02

    CPC分类号： C22B5/20 ,  C22B23/065

    摘要： Variously sized metal pellets that are produced by decomposition of metal-containing gas, in process wherein pellets are continuously recirculated through a preheater and a reaction chamber, are preheated uniformly and then radially mixed after issuing from the preheater and before entrance to the reaction chamber.

    摘要翻译： 在通过预热器和反应室连续再循环的过程中，通过分解含金属气体产生的各种尺寸的金属颗粒被均匀地预热，然后在从预热器发出之后并在进入反应室之前径向混合。