Fluidized bed process for producing acrylonitrile and catalytic mixture
containing antimony oxide-silica composite used therein
    46.
    发明授权
    Fluidized bed process for producing acrylonitrile and catalytic mixture containing antimony oxide-silica composite used therein 失效
    用于生产丙烯腈的流化床方法和含有其中使用的氧化锑 - 二氧化硅复合物的催化混合物

    公开(公告)号:US4545943A

    公开(公告)日:1985-10-08

    申请号:US240267

    申请日:1981-03-04

    IPC分类号: B01J23/18 C07C120/14

    摘要: Acrylonitrile is produced by passing a gaseous mixture comprising propylene, molecular oxygen and ammonia upwardly through a fluidized bed comprising particles of a highly-active acrylonitrile catalyst in physical admixture with particles of a composite consisting essentially of antimony oxide and silica. The use of the antimony oxide-silica composite moderates the effect of the highly-active acrylonitrile catalyst reducing its activity sufficiently to enable the use of longer residence times, but without reducing the acrylonitrile selectivity of the catalyst.

    摘要翻译: 通过将包含丙烯,分子氧和氨的气体混合物向上通过包含高活性丙烯腈催化剂颗粒的流化床,与主要由氧化锑和二氧化硅组成的复合材料的物理混合物进行物理混合而制备丙烯腈。 使用氧化锑 - 二氧化硅复合材料缓和了高活性丙烯腈催化剂的作用,足以使其活性降低,从而能够使用较长的停留时间,但不降低催化剂的丙烯腈选择性。

    Process for preparing alkyldimethylamines
    49.
    发明授权
    Process for preparing alkyldimethylamines 失效
    制备烷基二甲胺的方法

    公开(公告)号:US4293716A

    公开(公告)日:1981-10-06

    申请号:US108479

    申请日:1979-12-31

    IPC分类号: B01J23/86 C07C85/06

    CPC分类号: B01J23/868

    摘要: A process for preparing alkyldimethylamines which comprises passing through a fixed bed, containing a copper catalyst, optionally chromium oxide, and an oxide of a Group I metal, selected amounts of dimethylamine and an alcohol or mixtures of alcohols.

    摘要翻译: 一种制备烷基二甲胺的方法,其包括通过含有铜催化剂,任选的氧化铬的固定床和第I族金属的氧化物,选择量的二甲胺和醇或醇的混合物。