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    Catalyst, process for its production and its use for preparing vinyl acetate
    1.
    发明授权
    Catalyst, process for its production and its use for preparing vinyl acetate 失效
    催化剂，其生产方法及其用于制备乙酸乙烯酯的方法

    公开(公告)号：US06268522B1

    公开(公告)日：2001-07-31

    申请号：US09089627

    申请日：1998-06-03

    申请人： Alfred Hagemeyer ,  Uwe Dingerdissen ,  Klaus Kühlein ,  Johannes Heitz ,  Dieter Bäuerle

    发明人： Alfred Hagemeyer ,  Uwe Dingerdissen ,  Klaus Kühlein ,  Johannes Heitz ,  Dieter Bäuerle

    IPC分类号： C07C6705

    CPC分类号： B01J37/345 ,  B01J23/44 ,  B01J23/52 ,  C07C67/055 ,  C07C69/01 ,  C07C69/15

    摘要： The invention relates to a process for producing supported shell catalysts comprising noble metals by UV photoreduction of noble metal salt precursors fixed to a support. For this purpose, the shaped supported body is impregnated with suitable noble metal salts which are then reduced to the metals in a zone close to the surface by means of UV radiation, preferably in the absence of a chemical reducing agent. The metal salts in the interior of the pellets which have not been irradiated and therefore have not been reduced are extracted using a solvent. The noble metal shell catalysts produced in this way can be used for many heterogeneously catalyzed reactions such as hydrogenations and oxidations. According to the invention, Pd/Au shell catalysts on porous ceramic supports, e.g. SiO2 shaped bodies, produced by this process can be used in the synthesis of vinyl acetate.

    摘要翻译： 本发明涉及通过紫外光还原固定在载体上的贵金属盐前体制备包含贵金属的负载型壳催化剂的方法。 为此，成形的支撑体浸渍有合适的贵金属盐，然后通过UV辐射将其还原成靠近表面的区域中的金属，优选在不存在化学还原剂的情况下。 使用溶剂提取未被照射并因此未被还原的颗粒内部的金属盐。以这种方式制备的贵金属壳催化剂可用于许多非均相催化反应如氢化和氧化。根据 对于本发明，Pd / Au壳催化剂在多孔陶瓷载体上，例如 通过该方法生产的SiO 2形体可用于乙酸乙烯酯的合成。

    Device for the chemical analysis of material samples and metallurgical vessel therefor
    5.
    发明授权
    Device for the chemical analysis of material samples and metallurgical vessel therefor 失效
    用于材料样品和冶金容器化学分析的装置

    公开(公告)号：US07006216B2

    公开(公告)日：2006-02-28

    申请号：US10395209

    申请日：2003-03-25

    申请人： Norbert Ramaseder ,  Johannes Heitz ,  Johann Gruber ,  Dieter Bauerle

    发明人： Norbert Ramaseder ,  Johannes Heitz ,  Johann Gruber ,  Dieter Bauerle

    IPC分类号： G01N21/63

    CPC分类号： G01N21/718

    摘要： A device for the chemical analysis of solid or molten material samples, based on laser-induced emission spectroscopy, including a laser source generating a laser beam, a deflection device deflecting the laser beam, a focusing device focusing the laser beam, a device that guides the reflections of a plasma ignited by the laser beam on the material sample to an evaluation device. To arrange the laser source and the evaluation device remotely from the material sample, an arm having at least one movable joint and a cavity for the laser beam is provided between the laser source and the material sample for guiding the laser beam. The deflection device is shaped as a mirror or a prism and is provided at the articulation of the arm, whereby the laser source and the evaluation device are arranged to be independent of the material sample in terms of their movements.

    摘要翻译： 一种用于固体或熔融材料样品的化学分析的装置，其基于激光诱发发射光谱，包括产生激光束的激光源，偏转激光束的偏转装置，聚焦激光束的聚焦装置，引导 由材料样品上的激光束点燃的等离子体的反射到评估装置。 为了将激光源和评估装置远离材料样品布置，在激光源和材料样品之间设置有用于引导激光束的具有至少一个活动接头和用于激光束的空腔的臂。 偏转装置被成形为反射镜或棱镜，并且设置在臂的铰接处，由此激光源和评估装置被布置成在其运动方面独立于材料样品。

    Catalyst, process for its production and its use for preparing vinyl acetate
    6.
    发明授权
    Catalyst, process for its production and its use for preparing vinyl acetate 失效

    公开(公告)号：US6069268A

    公开(公告)日：2000-05-30

    申请号：US89627

    申请日：1998-06-03

    申请人： Alfred Hagemeyer ,  Uwe Dingerdissen ,  Klaus Kuhlein ,  Johannes Heitz ,  Dieter Bauerle

    发明人： Alfred Hagemeyer ,  Uwe Dingerdissen ,  Klaus Kuhlein ,  Johannes Heitz ,  Dieter Bauerle

    摘要： The invention relates to a process for producing supported shell catalysts comprising noble metals by UV photoreduction of noble metal salt precursors fixed to a support. For this purpose, the shaped supported body is impregnated with suitable noble metal salts which are then reduced to the metals in a zone close to the surface by means of UV radiation, preferably in the absence of a chemical reducing agent. The metal salts in the interior of the pellets which have not been irradiated and therefore have not been reduced are extracted using a solvent.The noble metal shell catalysts produced in this way can be used for many heterogeneously catalyzed reactions such as hydrogenations and oxidations.According to the invention, Pd/Au shell catalysts on porous ceramic supports, e.g. SiO.sub.2 shaped bodies, produced by this process can be used in the synthesis of vinyl acetate.