Hydrogenolysis of halocarbon mixtures
    1.
    发明授权
    Hydrogenolysis of halocarbon mixtures 失效
    卤代烃混合物的氢解

    公开(公告)号:US5300713A

    公开(公告)日:1994-04-05

    申请号:US998005

    申请日:1992-12-29

    CPC分类号: C07C17/23 Y02P20/582

    摘要: Mixtures of halocarbons which contain fluorine and chlorine and/or bromine (e.g. a mixture of CCl.sub.2 FCF.sub.3 with CClF.sub.2 CF.sub.3, CCl.sub.2 F.sub.2, CClF.sub.2 CClF.sub.2 or CHClF.sub.2) are contacted with hydrogen in the presence of silicon carbide and/or a metal selected from aluminum, molybdenum, titanium, nickel, iron or cobalt (or their alloys) at temperatures of 350.degree. to 700.degree. C. and pressures of 0 to 1000 psig to obtain a product mixture which substantially corresponds in terms of the distribution of fluorine substituents on carbon atoms with the mixture of halocarbon starting materials.

    摘要翻译: 与碳氢化合物和/或选自铝,钼,钛,钛的金属的存在下,将含有氟和氯和/或溴的卤代烃(例如CCl 2 CFF 3与CClF 2 CF 3,CCl 2 F 2,CClF 2 CClF 2或CHClF 2的混合物) 镍,铁或钴(或它们的合金)在350至700摄氏度的温度和0至1000psig的压力下获得基本上对应于碳原子上的氟取代基的分布的产物混合物, 卤代烃原料。

    Catalytic hydrogenolysis
    2.
    发明授权
    Catalytic hydrogenolysis 失效
    催化氢解

    公开(公告)号:US5136113A

    公开(公告)日:1992-08-04

    申请号:US734407

    申请日:1991-07-23

    申请人: V. N. M. Rao

    发明人: V. N. M. Rao

    CPC分类号: C07C17/23

    摘要: Catalytic hydrogenolysis of fluorohalocarbons (e.g., CFCs) and fluorohalohydrocarbons (e.g., HCFCs), using catalysts of Re, Co, Ni, Ru, Rh, Pd, Os, Ir, and/or Pt on a carbon having low ash content. Preferred catalysts use carbon which is acid-washed, first with an acid other than hydrofluoric acid and then with hydrofluoric acid; and also have a low content of phosphorus, sulfur, potassium, sodium and iron.

    摘要翻译: 在具有低灰分含量的碳上使用Re,Co,Ni,Ru,Rh,Pd,Os,Ir和/或Pt的催化剂对氟代卤代烃(例如CFC)和氟代卤代烃(例如HCFC)进行催化氢解。 优选的催化剂使用被酸洗的碳,首先用除氢氟酸之外的酸,然后用氢氟酸; 磷,硫,钾,钠,铁含量低。

    Regeneration or activation of noble metal catalysts using
fluorohalocarbons or fluorohalohydrocarbons
    3.
    发明授权
    Regeneration or activation of noble metal catalysts using fluorohalocarbons or fluorohalohydrocarbons 失效
    使用氟代卤代烃或氟代卤代烃再生或活化贵金属催化剂

    公开(公告)号:US4980324A

    公开(公告)日:1990-12-25

    申请号:US412326

    申请日:1989-09-25

    CPC分类号: B01J38/56 B01J23/96

    摘要: This invention provides a process for the regeneration and/or activation of a noble catalyst comprising contacting said catalyst with an atmosphere comprising a fluorohalocarbon and/or a fluorohydrocarbon of the formula, C.sub.n H.sub.m F.sub.p X.sub.q, wherein X is chlorine and/or bromine; n is an integer from 1 to 6; m is an integer from 0 to 6, provided that m can be no more than the total n in the compound; p and q are integers from 1-13 when the compound is acrylic and integers from 1-11 when the compound is cyclic, provided that the fluorohalocarbon and/or fluorohalohydrocarbon always contain at least one chlorine or bromine atom and provided that m+p+q=2n+2 when the compound is acrylic and that m+p+q=2n when the compound is cyclic, at a temperature in excess of 200.degree. C.

    摘要翻译: 本发明提供了一种用于再生和/或活化贵金属催化剂的方法,包括使所述催化剂与包含氟卤烃和/或下式的氟代烃的气氛CnHmFpXq接触,其中X是氯和/或溴; n是1至6的整数; m是0至6的整数,条件是m不能超过化合物中的总数n; 当化合物为丙烯酸时,p和q为1-13的整数,当化合物为环状时,该化合物为1-11的整数,条件是氟代卤代烃和/或氟代卤代烃总是含有至少一个氯或溴原子,条件是m + p + 当化合物为丙烯酸时,q = 2n + 2,当化合物为环状时,m + p + q = 2n,温度超过200℃。