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    Process for producing exhaust-gas-purifying catalyst
    322.
    发明公开
    Process for producing exhaust-gas-purifying catalyst 失效
    一种用于生产排气净化催化剂的方法

    公开(公告)号：EP0695580A3

    公开(公告)日：1997-07-09

    申请号：EP95112102.9

    申请日：1995-08-01

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Taguchi, Norio ,  Suzuki, Juji

    IPC: B01J37/02 ,  B01J37/08 ,  B01D53/94 ,  B01J23/56

    CPC classification number: B01D53/945 ,  B01J23/40 ,  B01J23/89 ,  B01J37/0018 ,  B01J37/0201 ,  B01J37/0203 ,  Y02T10/22

    Abstract: A process for producing an exhaust-gas-purifying catalyst includes the steps of immersing a porous support into a solution including a noble metal catalyst ingredient, thereby preparing a support with a noble metal catalyst ingredient loaded thereon, and thermally treating the noble-metal-catalyst-ingredient-loaded support at a temperature of 800 °C or more in non-oxidizing atmosphere. In the thermally-treating step, the noble metal catalyst ingredient is prevented from being oxidized to its oxide, and accordingly it is inhibited from migrating in vapor phase. Further, in the thermally-treating step, pores of the porous support are contracted so that they surround the noble metal catalyst ingredient closely therein. All in all, the noble metal catalyst ingredient is prevented from sintering. Thus, the resulting exhaust-gas-purifying catalyst is of superb heat-resistance, and it can be applied to elevated temperatures of 800 °C or more in fuel-lean atmosphere.

    Process for making heterogeneous catalysts by impregnation
    323.
    发明公开
    Process for making heterogeneous catalysts by impregnation 失效
    Verfahren zur Herstellung eines heterogenen Katalysators durch Impregnierung

    公开(公告)号：EP0781604A2

    公开(公告)日：1997-07-02

    申请号：EP96309187.1

    申请日：1996-12-17

    Applicant: EXXON RESEARCH AND ENGINEERING COMPANY

    Inventor： Culross, Claude Clarence

    IPC: B01J37/02

    CPC classification number: B01J37/0201 ,  B01J23/8896 ,  B01J35/1019 ,  B01J35/1042 ,  B01J37/0203 ,  Y10S502/514

    Abstract: A continuous impregnation process for the preparation of a heterogeneous catalyst. A catalytic metal, or metals, is composited with a porous solids support component via the steps of: (i) forming a slurry of porous, particulate solids dispersed in an organic, or hydrocarbon solvent, preferably an organic, or hydrocarbon solvent which forms an azeotrope with water, (ii) adding, in aqueous solution, preferably continuously, one or more of a salt, acid, or compound of the catalytic metal, or metals, which is insoluble in the organic, or hydrocarbon solvent to which it is added; the aqueous solution contacting the porous, particulate support solids wicking into the pores to disperse the salt, acid or compound of the catalytic metal, or metals therein, (iii) stirring, preferably vigorously and continuously, the slurry containing the porous, particulate solids, water, and salt, acid, or compound of the catalytic metal, or metals, and (iv) distilling at a temperature sufficient to vaporize and remove the water from the support component, and slurry, to leave the catalytic metal, or metals, component deposited within the pores of the support component of the catalyst. The catalyst is next recovered, and calcined.

    Abstract translation: 用于制备非均相催化剂的连续浸渍方法。 催化金属或金属与多孔固体支持组分合成，步骤为：（i）形成分散在有机或烃溶剂中的多孔，颗粒固体的浆液，优选有机或烃溶剂形成 与水共沸，（ii）在水溶液中优选连续地加入一种或多种催化金属或金属的盐，酸或化合物，其不溶于其中加入的有机或烃溶剂中 ; 所述水溶液接触多孔的颗粒状载体固体芯吸到孔中以分散催化金属的盐，酸或化合物或其中的金属，（iii）优选剧烈和连续地搅拌含有多孔颗粒固体的浆料， 水和盐，酸或催化金属或金属的化合物，和（iv）在足以蒸发并从载体组分除去水的温度和浆料中蒸馏以离开催化金属或金属，组分 沉积在催化剂的载体组分的孔内。 接着回收催化剂，并煅烧。

    VINYL ACETATE CATALYST PREPARATION METHOD
    325.
    发明授权
    VINYL ACETATE CATALYST PREPARATION METHOD 失效
    方法制备催化剂醋酸乙烯生产

    公开(公告)号：EP0619760B1

    公开(公告)日：1996-12-18

    申请号：EP93923342.5

    申请日：1993-10-08

    Applicant: HOECHST CELANESE CORPORATION

    Inventor： NICOLAU, Ioan ,  COLLING, Philip, M. ,  JOHNSON, Leland, R.

    IPC: B01J37/03 ,  B01J37/02 ,  B01J23/52 ,  C07C69/15

    CPC classification number: B01J37/031 ,  B01J23/52 ,  B01J37/0201 ,  C07C67/055 ,  C07C69/01 ,  C07C69/15

    Abstract: A method of preparing a catalyst particularly useful in the reaction of ethylene, oxygen and acetic acid in the vapor phase to form vinyl acetate comprises impregnating a porous support with water soluble salts of palladium and gold, fixing the palladium and gold on the support as water insoluble compounds by immersing the impregnated support in a reactive solution and tumbling the impregnated support in the reactive solution for at least 1/2 hour to begin precipitation of the insoluble compounds and completing precipitation of the insoluble compounds on the support and reducing the insoluble compounds to free palladium and gold. The catalysts prepared in this manner have been shown to provide improvement with respect to reduced selectivity to CO2 during the vinyl acetate forming reaction.

    Procédé d'hydrogénation catalytique
    327.
    发明公开
    Procédé d'hydrogénation catalytique 失效
    Katalytisches Hydrierverfahren。

    公开(公告)号：EP0623387A1

    公开(公告)日：1994-11-09

    申请号：EP94400890.3

    申请日：1994-04-25

    Applicant: INSTITUT FRANCAIS DU PETROLE

    Inventor： Le Peltier, Fabienne ,  Didillon, Blaise ,  Sarrazin, Patrick ,  Boitiaux, Jean-Paul

    IPC: B01J23/64 ,  B01J23/62 ,  B01J37/02 ,  C10G45/52 ,  C10G45/00

    CPC classification number: C10G45/52 ,  B01J23/62 ,  B01J23/622 ,  B01J23/64 ,  B01J37/0201 ,  B01J37/0205 ,  C10G45/00

    Abstract: L'invention concerne un procédé d'hydrogénation avec un catalyseur, comprenant au moins un support, au moins un métal de la famille du groupe VIII, au moins un métal additionnel M choisi parmi le germanium, l'étain, le plomb, le gallium, l'indium, le titane, le fer, le molybdène, le tungstène, le rhénium ou le thallium, catalyseur préparé par introduction d'au moins un composé organique du métal M dilué, in-situ dans le réacteur où sera ensuite traitée la charge hydrocarbonée ou dans un préréacteur directement en contact avec ledit réacteur. Le catalyseur préparé selon l'invention peut également renfermer un halogène ou un sulfuride.

    Abstract translation: 使用包含至少一种载体，至少一种第VIII族金属的金属，至少一种选自锗，锡，铅，镓，铟，钛，铁，钼，钨，铼的另外的金属M进行氢化的方法 所述催化剂通过将稀释的金属M的至少一种有机化合物原位引入反应器中而制备，其中烃原料将被随后处理或直接与所述反应器接触的预反应器中。 根据本发明制备的催化剂还可以包括卤素或硫化物。

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