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    Molded articles based on pyrogenically prepared silicon dioxide, process for their production and their use
    1.
    发明授权
    Molded articles based on pyrogenically prepared silicon dioxide, process for their production and their use 失效
    基于热解制备的二氧化硅的成型制品，其生产和使用的过程

    公开(公告)号：US5021378A

    公开(公告)日：1991-06-04

    申请号：US488379

    申请日：1990-02-23

    申请人： Klaus Deller ,  Reinhard Klingel ,  Helmfried Krause

    发明人： Klaus Deller ,  Reinhard Klingel ,  Helmfried Krause

    IPC分类号： C04B38/06 ,  B01J21/08 ,  B01J21/12 ,  B01J32/00 ,  B01J35/10 ,  B01J37/00 ,  C04B35/14

    CPC分类号： C04B35/14 ,  B01J21/08 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1061 ,  B01J35/108 ,  B01J37/0009

    摘要： Molded articles based on pyrogenically prepared silicon dioxide and having the following physical-chemical characteristic data:______________________________________ External diameter 2 to 15 mm BET surface area 50 to 400 m.sup.2 /g Total Pore volume 0.6 to 1.3 ml/g Crushing strength 40 to 120 N Pore size distribution no pores 95% by weight of SiO.sub.2 remainder Al.sub.2 O.sub.3. ______________________________________ These products are produced by compacting pyrogenically prepared silicon dioxide with kaolin and/or graphite, sugar, starch, urea or wax with addition of water, drying the mixture at a temperature of from 80.degree. to 120.degree. C. and comminuting it to form a powder, pressing the powder to form the desired article, and tempering the articles at a temperature of from 400.degree. to 1200.degree. C. for a period of 0.5 to 6 hours. The molded bodies can be used as a catalyst support or catalyst.

    摘要翻译： 基于热解法制备的二氧化硅的成型制品，具有以下物理化学特性数据：外径2〜15mm -BET表面积50〜400m2 / g - 总孔体积0.6〜1.3ml / g - 冲击强度40〜 120 N孔径分布孔径<5 nm直径，至少80％，直径范围5至40 nm - 组成> 95％（重量）SiO 2剩余部分Al2O3。 - 这些产品是通过用高岭土和/或石墨，糖，淀粉，尿素或蜡与加热水压制热解法制备的二氧化硅，在80-120℃的温度下干燥该混合物并粉碎形成的 粉末，按压粉末形成所需的物品，并在400℃〜1200℃的温度下回火制品0.5〜6小时。 成型体可以用作催化剂载体或催化剂。