Halocarbon hydrogenolysis
    51.
    发明授权
    Halocarbon hydrogenolysis 失效
    卤烃氢解

    公开(公告)号:US5621151A

    公开(公告)日:1997-04-15

    申请号:US426534

    申请日:1995-04-21

    IPC分类号: C07C17/23 C07C17/42

    CPC分类号: C07C17/23

    摘要: Halocarbons such as CCl.sub.2 F.sub.2, CF.sub.3 CFHCl or CF.sub.3 CFCl.sub.2 which contain chlorine and/or bromine 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pressures of 0 to 1000 psig to obtain a product wherein at least one chlorine or bromine in the starting material has been replaced by hydrogen.

    摘要翻译: 在碳化硅和/或选自铝,钼,钛,镍,铁或钴(或它们的合金)的金属的存在下,在温度下,将含有氯和/或溴的碳氢化合物如CCl 2 F 2,CF 3 CFHCl或CF 3 CFCl 2与氢气接触 350℃至700℃,压力为0-1000psig,得到其中原料中至少一个氯或溴被氢代替的产物。

    Method for producing a hydrofluorocarbon
    52.
    发明授权
    Method for producing a hydrofluorocarbon 失效
    生产氢氟烃的方法

    公开(公告)号:US5618986A

    公开(公告)日:1997-04-08

    申请号:US642615

    申请日:1996-05-03

    IPC分类号: C07C17/23 C07C19/08

    CPC分类号: C07C17/23

    摘要: A method for producing a hydrofluorocarbon of the formula a H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with an alkali metal hydroxide under action of an alcohol mixture comprising a primary alcohol and a secondary alcohol.

    摘要翻译: 一种制备式HnRfH的氢氟烃的方法,其中n为0或1,当n为0时,Rf为C2-12直链或支链多氟烷基,当n为1时,Rf为C2-12直链或 支化的多氟亚烷基,其包括在包含伯醇和仲醇的醇混合物的作用下使其中n和Rf如上定义的式IIFF的碘氟碳与碱金属氢氧化物反应。

    Production of fluorocarbon compounds
    53.
    发明授权
    Production of fluorocarbon compounds 失效
    生产碳氟化合物

    公开(公告)号:US5611896A

    公开(公告)日:1997-03-18

    申请号:US323073

    申请日:1994-10-13

    摘要: The invention provides a method and installation for the production of a desired fluorocarbon compound, which includes the steps of providing a high temperature zone; and feeding at least one input material into the high temperature zone to generate a body of hot gas including fluorine-containing species and carbon-containing species. The molar C:F ratio in the body of hot gas is controlled at a selected value between about 0.4 and 2; and the specific enthalpy of the body of hot gas is controlled between about 1 kWh/kg and about 10 kWh/kg for a time interval, so that a reactive thermal gaseous mixture forms, containing reactive species including reactive fluorine-containing precursors and reactive carbon-containing precursors. Thereafter the reactive thermal mixture is cooled at a cooling rate and to a cooling temperature selected to produce an end product including the desired fluorocarbon compound. The input material is typically a C.sub.1 -C.sub.10 perfluorinated carbon compound of the general formula C.sub.n F.sub.m in which 0 1, for example a gaseous fluorocarbon such as tetrafluoromethane (CF.sub.4).

    摘要翻译: 本发明提供了一种生产所需氟碳化合物的方法和装置,包括提供高温区的步骤; 并将至少一个输入材料进料到高温区中以产生包括含氟物质和含碳物质的热气体。 热气体中C:F摩尔比控制在约0.4和2之间的选定值; 并且将热气体的比焓控制在约1kWh / kg至约10kWh / kg之间的时间间隔,使得形成反应性热气体混合物,其含有包含反应性含氟前体和反应性碳的反应性物质 的前体。 此后,将反应性热混合物以冷却速度冷却至选择的冷却温度以产生包含所需氟碳化合物的最终产物。 输入材料通常是通式CnFm的C1-C10全氟化碳化合物,其中0

    Method for preparing dichlorodecafluoropentane and decafluoropentane
    54.
    发明授权
    Method for preparing dichlorodecafluoropentane and decafluoropentane 失效
    制备二氯十氟戊烷和十氟戊烷的方法

    公开(公告)号:US5557019A

    公开(公告)日:1996-09-17

    申请号:US290776

    申请日:1994-08-24

    摘要: A new 3,3-dichloro-1,1,1,2,2,4,4,5,5,5-decafluoropentane as a precursor of alternatives of refrigerants, etc.A method to obtain the target products at high yield and high selectivity by reacting tetrafluoroethylene and difluorodichloromethane under the Lewis acid catalyst to produce the new compound and an economical method in a continuous reaction state.A production method of 1,1,1,2,2,4,4,5,5,5-decafluoropentane at high yield by reducing 3,3-dichloro-1,1,1,2,2,4,4,5,5,5-decafluoropentane.

    摘要翻译: PCT No.PCT / JP93 / 00214 Sec。 371日期:1994年8月24日 102(e)日期1994年8月24日PCT提交1993年2月22日PCT公布。 公开号WO93 / 16973 日期1993年9月2日作为制冷剂的替代物的前体的新的3,3-二氯-1,1,1,2,2,4,4,5,5,5-十氟戊烷等。获得目标的方法 通过在路易斯酸催化剂下使四氟乙烯和二氟二氯甲烷反应生成新的化合物和在连续反应状态下的经济方法,产率高,选择性高。 通过还原3,3-二氯-1,1,1,2,2,4,4,...的高产率的1,1,1,2,2,4,4,5,5,5-十氟戊烷的制备方法, 5,5,5-十氟戊烷。

    Catalytic hydrogenolysis
    56.
    发明授权
    Catalytic hydrogenolysis 失效
    催化氢解

    公开(公告)号:US5523501A

    公开(公告)日:1996-06-04

    申请号:US362331

    申请日:1994-12-22

    CPC分类号: C07C17/23 C07C17/278

    摘要: A process is disclosed for the catalytic hydrogenolysis of at least one starting material selected from saturated acyclic halofluorocarbons and hydrohalofluorocarbons containing three or four carbon atoms, and from one to five non-fluorine halogens (each non-fluorine halogen being independently chlorine or bromine) wherein all non-fluorine halogen substituents are contained on end carbons. The process involves reacting the starting material with hydrogen at an elevated temperature of about 300.degree. C. or less in the presence of a catalyst containing a catalytically effective amount of palladium supported on carbon to produce a hydrogenolysis product wherein over 80 mole percent of the hydrogenolysis product is a saturated compound having the same distribution of fluorine substituents as the starting material. The carbon support has an ash content of less than about 0.5% by weight.

    摘要翻译: 公开了用于催化氢解至少一种选自饱和的无环卤代烃和含有三或四个碳原子的氢卤氟烃的起始材料和一至五个非氟卤素(每个非氟卤素独立地是氯或溴)的催化氢解,其中 所有非氟卤素取代基都包含在末端碳上。 该方法包括在含有催化有效量的负载在碳上的钯的催化剂存在下,在约300℃或更低的升高温度下使起始材料与氢反应以产生氢解产物,其中超过80摩尔%的氢解 产物是具有与起始原料相同的氟取代基分布的饱和化合物。 碳载体的灰分含量小于约0.5重量%。

    Process for converting chlorodifluoromethane and/or
dichlorodifluoromethane
    57.
    发明授权
    Process for converting chlorodifluoromethane and/or dichlorodifluoromethane 失效
    转化氯二氟甲烷和/或二氯二氟甲烷的方法

    公开(公告)号:US5516947A

    公开(公告)日:1996-05-14

    申请号:US427637

    申请日:1995-04-21

    CPC分类号: C07C17/23 C07C17/269

    摘要: A process is disclosed for the conversion of halogenated methanes of the formula CCl.sub.y H.sub.2-y F.sub.2 (wherein y is 1 or 2) to a mixture of conversion products. The process involves reacting certain halogenated hydrocarbon feeds and hydrogen (wherein said halogenated methanes are at least one mole percent of the halogenated hydrocarbon feed) in a reaction vessel of alumina, silicon carbide or at least one metal selected from gold, chromium, aluminum, molybdenum, titanium, nickel, iron, cobalt, and their alloys at a temperature of from about 500.degree. C. to 800.degree. C. and a pressure from abut 101 kPa to 7000 kPa to produce a mixture of conversion products of said halogenated methanes which comprises at least 5 mole percent C.sub.2 H.sub.2 F.sub.4, wherein the mole ratio of CH.sub.2 FCF.sub.3 to CHF.sub.2 CHF.sub.2 in said C.sub.2 H.sub.2 F.sub.4 is at least about 1:9.

    摘要翻译: 公开了将式CClyH2-yF2(其中y为1或2)的卤代甲烷转化为转化产物的混合物的方法。 该方法包括在氧化铝,碳化硅或选自金,铬,铝,钼的至少一种金属的反应容器中使某些卤代烃进料和氢(其中所述卤代甲烷为卤代烃进料的至少1摩尔%)反应 钛,镍,铁,钴及其合金,其温度为约500℃至800℃,压力为101kPa至7000kPa,以产生所述卤代甲烷的转化产物的混合物,其包含 至少5摩尔%的C 2 H 2 F 4,其中所述C 2 H 2 F 4中的CH 2 CHF 3与CHF 2 CHF 2的摩尔比为至少约1:9。

    Process for producing 1,1,1,2-tetrafluoroethane
    59.
    发明授权
    Process for producing 1,1,1,2-tetrafluoroethane 失效
    生产1,1,1,2-四氟乙烷的方法

    公开(公告)号:US5426253A

    公开(公告)日:1995-06-20

    申请号:US308612

    申请日:1994-09-19

    IPC分类号: C07C17/23 C07C19/08

    CPC分类号: C07C17/23

    摘要: A process for producing 1,1,1,2-tetrafluoroethane, which comprises reacting 2,2-dichloro-1,1,1,2-tetrafluoroethane, 2-chloro-1,1,1,2-tetrafluoroethane or a mixture thereof with hydrogen in the presence of a hydrogenation catalyst consisting essentially of a Group VIII element as the main component and at least one element selected from the group consisting of Group IB elements, lanthanum and lanthanide elements, as an additional component.

    摘要翻译: 一种生产1,1,1,2-四氟乙烷的方法,其包括使2,2-二氯-1,1,1,2-四氟乙烷,2-氯-1,1,1,2-四氟乙烷或其混合物 在基本上由VIII族元素作为主要成分组成的氢化催化剂和选自由IB族元素,镧和镧系元素组成的组中的至少一种元素作为附加成分的氢气存在下进行。