Halocarbon hydrogenolysis
    11.
    发明授权
    Halocarbon hydrogenolysis 失效
    卤烃氢解

    公开(公告)号:US5364992A

    公开(公告)日:1994-11-15

    申请号:US122102

    申请日:1993-09-16

    IPC分类号: C07C17/23 C07C19/08

    CPC分类号: C07C17/23

    摘要: Halocarbons such as CCl.sub.2 F, CF.sub.3 CFHCl.sub.2 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pressures of 0 to 1000 psig to obtain a product wherein at least one chlorine or bromine in the starting material has been replaced by hydrogen.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,将卤代烃如CCl 2 F,CF 3 CFHCl 2或含有氯和/或溴的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。

    Halocarbon hydrogenolysis
    14.
    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pressures of 0 to 1000 psig to obtain a product wherein at least one chlorine or bromine in the starting material has been replaced by hydrogen.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。

    Process for converting chlorodifluoromethane and/or
dichlorodifluoromethane
    15.
    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。

    Hydrogenolysis of halocarbon mixtures
    16.
    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 equilibration to improve the relative yield of selected
halocarbons
    18.
    发明授权
    Catalytic equilibration to improve the relative yield of selected halocarbons 失效
    催化平衡以提高选定卤代烃的相对产率

    公开(公告)号:US5030372A

    公开(公告)日:1991-07-09

    申请号:US560529

    申请日:1990-07-31

    CPC分类号: C09K5/04 C07C17/202 C07C17/23

    摘要: Gas phase and liquid phase processes are disclosed which use interconversion of CF.sub.3 CHFCl and CF.sub.2 HCF.sub.2 Cl in contact with catalyst consisting essentially of halided aluminum oxide and/or aluminum halide at elevated temperatures to increase the mole ratio of one of said compounds in a composition relative to the other. Also disclosed in use of said interconversion along with hydrogenolysis in processes for producing mixtures of CF.sub.3 CH.sub.2 F and CF.sub.2 HCF.sub.2 H from certain compositions comprising CF.sub.2 HCF.sub.2 Cl such that the mole ratio of CF.sub.3 CH.sub.2 F to CF.sub.2 HCF.sub.2 H in the product mixtures produced from said compositions may be increased or decreased.

    摘要翻译: 公开了气相和液相方法,其使用CF 3 CHFCl和CF 2 HCF 2 Cl与升高的温度下基本上由卤化的氧化铝和/或卤化铝组成的催化剂相互接触,以增加组合物中所述化合物之一相对于另一种的摩尔比 。 在从包含CF 2 HCF 2 Cl的某些组合物制备CF 3 CH 2 F和CF 2 HCF 2 H的混合物的方法中,还使用所述相互转化以及氢解来公开所述相互转化,使得可以增加或减少由所述组合物产生的产物混合物中CF 3 CH 2 F与CF 2 HCF 2 H的摩尔比。

    Catalytic hydrogenation of carboxylic anhydrides to esters or lactones
    19.
    发明授权
    Catalytic hydrogenation of carboxylic anhydrides to esters or lactones 失效
    羧酸酐催化氢化成酯或内酯

    公开(公告)号:US4973713A

    公开(公告)日:1990-11-27

    申请号:US442097

    申请日:1989-11-28

    IPC分类号: C07D307/88 C07D315/00

    CPC分类号: C07D315/00 C07D307/88

    摘要: A process for the production of esters or lactones, comprising reacting in the presence of a catalyst and under hydrogenation conditions hydrogen and an acyclic or cyclic carboxylic anhydride to produce the corresponding ester or lactone, wherein the catalyst is a supported catalyst comprising:(a) a group VIII metal, Re and Fe;(b) a group VIII metal on TiO.sub.2 ;(c) Ru and at least one of Re, Ag or Cu; or(d) Pd and Fe.Preferably, the anhydride has the formula ##STR1## and is reacted to form an ester of the formula ##STR2## or a lactone of the formula ##STR3## wherein R and R.sup.1 independently are lower alkyl or cycloalkyl; R.sup.2, R.sup.3, R.sup.4, R.sup.5 independently are hydrogen, lower alkyl, cycloalkyl or aryl; and wherein R.sup.3 and R.sup.4 taken together may form a saturated or unsaturated ring, or an aromatic ring. The more preferred starting material is phthalic anhydride.

    摘要翻译: 一种用于生产酯或内酯的方法,包括在催化剂存在下和在氢化条件下氢和无环或环状羧酸酐反应生成相应的酯或内酯,其中所述催化剂是负载型催化剂,其包含:(a) Ⅷ族金属,Re和Fe; (b)TiO2上的VIII族金属; (c)Ru和Re,Ag或Cu中的至少一种; 或(d)Pd和Fe。 优选地,酸酐具有式“IMAGE”,并且反应形成式“IMAGE”的酯或式“IMAGE”的内酯,其中R和R 1独立地为低级烷基或环烷基; R2,R3,R4,R5独立地是氢,低级烷基,环烷基或芳基; 并且其中R 3和R 4一起可以形成饱和或不饱和的环或芳香环。 更优选的原料是邻苯二甲酸酐。