Moldings based on pyrogenic silicon dioxide
    1.
    发明授权
    Moldings based on pyrogenic silicon dioxide 失效
    基于热解二氧化硅的成型品

    公开(公告)号:US06593270B1

    公开(公告)日:2003-07-15

    申请号:US09187420

    申请日:1998-11-06

    IPC分类号: B01J2344

    摘要: Moldings based on pyrogenic silicon dioxide with a pore volume of 0.5 to 1.8 ml/g are prepared by homogenizing pyrogenic silicon dioxide with methylhydroxyethyl cellulose, wax and polyethylene glycol with the addition of water, subjecting this mixture to a compounding and shaping process, extruding, optionally cutting the extrudate to the desired length using a cutting device, drying at a temperature of 70° to 150° C. and conditioning for a period of 30 minutes to 10 hours at a temperature of 400° to 1200° C. The moldings may be used as catalysts or catalyst supports for the preparation of vinyl acetate monomer, the hydration of ethylene and the hydration of propylene.

    摘要翻译: 通过用甲基羟乙基纤维素,蜡和聚乙二醇与加入水均匀化热解二氧化硅,制备孔体积为0.5至1.8ml / g的热解二氧化硅的模制品,使该混合物进行配混和成型过程, 任选地使用切割装置将挤出物切割成所需长度,在70℃至150℃的温度下干燥,并在400-1200℃的温度下调理30分钟至10小时。模制品可以 用作制备乙酸乙烯酯单体的催化剂或催化剂载体,乙烯的水合和丙烯的水合。

    Moldings based on silica
    4.
    发明授权
    Moldings based on silica 失效
    基于二氧化硅的成型品

    公开(公告)号:US06316383B1

    公开(公告)日:2001-11-13

    申请号:US09344488

    申请日:1999-06-25

    IPC分类号: B01J2108

    摘要: Moldings based on silica having a hollow cylindrical configuration with internal reinforcing stays or spokes leading from an inner wall of a hollow cylinder to the center of the molding or in the form of miniliths having passageway channels therethrough, are produced by homogenizing silica with methyl hydroxyethyl cellulose, wax and/or polyethylene glycol. Water and optionally aqueous alkaline ammonia solution are added, and the mixture is subjected to kneading and forming, extruding, optionally cutting the extrudate to the desired length by means of a cutting device, drying at a temperature from 20 to 150° C., and annealing for a period from 30 minutes to 10 hours at a temperature of 400 to 1200° C. The moldings can be used as catalyst supports for the production of unsaturated esters from olefins, organic acids and oxygen in the gas phase and and can be used in particular for the production of vinyl acetate monomer.

    摘要翻译: 基于二氧化硅的模制品具有中空圆柱形构造,其具有从中空圆柱体的内壁到模制中心或具有通道通道的微透镜形式的内部加强支柱或辐条,其通过用甲基羟乙基纤维素 ,蜡和/或聚乙二醇。 加入水和任选的碱性氨水溶液,将混合物进行捏合和成形,挤出,任选地通过切割装置将挤出物切割成所需长度,在20至150℃的温度下干燥,以及 在400〜1200℃的温度下退火30分钟〜10小时。成型体可以用作在气相中由烯烃,有机酸和氧气生产不饱和酯的催化剂载体,并且可以使用 特别是用于生产乙酸乙烯酯单体。

    Process for the continuous catalytic transformation of organic compounds
    10.
    发明授权
    Process for the continuous catalytic transformation of organic compounds 失效
    有机化合物的连续催化转化工艺

    公开(公告)号:US06316646B1

    公开(公告)日:2001-11-13

    申请号:US09073810

    申请日:1998-05-07

    IPC分类号: C07C5136

    摘要: A process for the continuous catalytic conversion of organic compounds, that, together with unwanted attendant materials, form a starting substance: first the organic compounds of the starting material are purposely extracted by means of condensed fluids. Then the extract, containing the condensed fluids and organic compounds as the reaction mixture is contacted with a catalyst for the catalytic conversion of the organic compounds to form a product mixture, which contains the individual products of the catalytic conversion. The product mixture is separated from the reaction mixture and the fluids employed are, optionally, conducted back for extraction.

    摘要翻译: 有机化合物的连续催化转化的方法,与不需要的伴随物质一起形成起始物质:首先,通过冷凝流体有目的地提取原料的有机化合物。 然后将含有作为反应混合物的冷凝流体和有机化合物的提取物与用于催化转化有机化合物的催化剂接触以形成含有催化转化的各个产物的产物混合物。 将产物混合物与反应混合物分离,并且任选地将所用流体引导回提取。