Method for purifying hexafluoroethane
    13.
    发明授权
    Method for purifying hexafluoroethane 有权
    六氟乙烷净化方法

    公开(公告)号:US06274782B1

    公开(公告)日:2001-08-14

    申请号:US09523966

    申请日:2000-03-13

    IPC分类号: C07C1738

    摘要: A purification method for purifying hexafluoroethane, comprising a step of making hexafluoroethane containing impurities of hydrofluorocarbons including two carbon atoms in a molecule contact a zeolite having a mean micropore size in a range of 3.5 Å to 11 Å and a silicon/aluminum ratio of not more than 1.5 or an adsorbent comprising the above-described zeolite and a carbonaceous adsorbent having a mean micropore size in a range of 3.5 Å to 11 Å, thereby reducing said hydrofluorocarbons.

    摘要翻译: 一种净化六氟乙烷的净化方法,其特征在于,包括在分子中含有包含2个碳原子的氢氟烷杂质的六氟乙烷与平均微孔尺寸在3.5〜11的范围内接触的硅石/铝比不大的工序 1.5以上的吸附剂或包含上述沸石的吸附剂和平均微孔尺寸在3埃至11埃范围内的碳质吸附剂,从而还原所述氢氟烃。

    Chromium-based fluorination catalyst, process for producing the
catalyst, and fluorination process using the catalyst
    15.
    发明授权
    Chromium-based fluorination catalyst, process for producing the catalyst, and fluorination process using the catalyst 失效
    铬系氟化催化剂,催化剂的制造方法以及使用该催化剂的氟化处理

    公开(公告)号:US5494873A

    公开(公告)日:1996-02-27

    申请号:US301881

    申请日:1994-09-07

    摘要: A halogenated hydrocarbon having 1 to 4 carbon atoms is brought into contact with hydrogen fluoride in a gaseous phase in the presence of a catalyst prepared by firing a substance composed mainly of chromium(III) hydroxide in the presence of hydrogen at a temperature of 350.degree. to 500.degree. C. or a catalyst prepared by heat-treating the above substance in an inert gas stream at a temperature of 100.degree. to 600.degree. C. and then firing the heat-treated substance in the presence of hydrogen at the above temperature or any one of catalysts prepared by partially fluorinating the above catalysts.

    摘要翻译: 具有1-4个碳原子的卤代烃在气相存在下,在氢气存在下,在350℃的温度下,在主要由氢氧化铬(III)组成的物质中焙烧制得的催化剂,使其与氟化氢接触。 或通过在惰性气体流中在100℃至600℃下热处理上述物质制备的催化剂,然后在上述温度的氢气存在下焙烧经热处理的物质,或 通过部分氟化上述催化剂制备的催化剂中的任一种。