Process for purifying 1,1,1-trifluoro-2-fluoroethane
    1.
    发明授权
    Process for purifying 1,1,1-trifluoro-2-fluoroethane 失效
    纯化1,1,1-三氟-2-氟乙烷的方法

    公开(公告)号:US5475168A

    公开(公告)日:1995-12-12

    申请号:US243066

    申请日:1994-05-16

    CPC分类号: C07C17/395

    摘要: 1,1,1-trifluoro-2-fluoroethane (CFC 134a) is purified from 1,1-difluoro-2-chloroethylene (CFC 1122) by reacting a mixture comprising said compounds with hydrofluoric acid, at temperatures from 200.degree. C. to 450.degree. C., in the presence of chrome oxide (Cr.sub.2 O.sub.3) in substantially crystalline form.

    摘要翻译: 通过使包含所述化合物的混合物与氢氟酸在200℃至200℃的温度下反应,从1,1-二氟-2-氯乙烯(CFC 1122)中纯化1,1,1-三氟-2-氟乙烷(CFC 134a)至 450℃,在基本上呈结晶形式的氧化铬(Cr 2 O 3)存在下进行。

    Process for purifying 1,1,1-trifluoro-2-fluoroethane
    4.
    发明授权
    Process for purifying 1,1,1-trifluoro-2-fluoroethane 失效
    纯化1,1,1-三氟-2-氟乙烷的方法

    公开(公告)号:US5563305A

    公开(公告)日:1996-10-08

    申请号:US470758

    申请日:1995-06-06

    CPC分类号: C07C17/395

    摘要: 1,1,1-trifluoro-2-fluoroethane (CFC 134a) is purified from 1,1-difluoro-2-chloroethylene (CFC 1122) by reacting a mixture comprising said compounds with hydrofluoric acid, at temperatures from 200.degree. C. to 450.degree. C., in one presence of chrome oxide (Cr.sub.2 O.sub.3) in substantially crystalline form.

    摘要翻译: 通过使包含所述化合物的混合物与氢氟酸在200℃至200℃的温度下反应,从1,1-二氟-2-氯乙烯(CFC 1122)中纯化1,1,1-三氟-2-氟乙烷(CFC 134a)至 在一定程度上存在基本上结晶形式的氧化铬(Cr 2 O 3)。

    Preparation process of 227
    6.
    发明授权
    Preparation process of 227 失效
    制备过程227

    公开(公告)号:US06187975B1

    公开(公告)日:2001-02-13

    申请号:US09333683

    申请日:1999-06-16

    IPC分类号: C07C1708

    摘要: Perfluoropropene (PFP) hydrofluorination process in gaseous phase to obtain CF3—CHF—CF3 (A-227ea), characterized in that as catalyst fluorinated alumina containing at least 90% by weight of AlF3, is used, the HF/PFP molar ratios range from about 4:1 to 20:1, the hydrofluorination process temperature being in the range 320°-420° C.

    摘要翻译: 全氟丙烯(PFP)氢氟化方法,得到CF 3 -CHF-CF 3(A-227ea),其特征在于使用含有至少90重量%AlF 3的催化剂氟化氧化铝,HF / PFP摩尔比范围为 约4:1至20:1,氢氟化处理温度在320°-420°C的范围内

    Process to obtain CFC 113a from CFC 113
    9.
    发明授权
    Process to obtain CFC 113a from CFC 113 失效
    从CFC 113获得CFC 113a的方法

    公开(公告)号:US06791001B2

    公开(公告)日:2004-09-14

    申请号:US10072873

    申请日:2002-02-12

    IPC分类号: C07C2100

    摘要: A process in gaseous phase to obtain CFC 113a starting from CFC 113, wherein CFC 113, optionally diluted with a gas inert under the reaction conditions, is let flow on a catalyst formed by aluminum fluoride.

    摘要翻译: 气相中从CFC 113开始获得CFC 113a的方法,其中CFC 113(其任选地在反应条件下用惰性气体稀释)在由氟化铝形成的催化剂上流动。