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38 条记录 (耗时 0.023 秒)

    Catalytic manufacture of vinyl fluoride
    1.
    发明授权
    Catalytic manufacture of vinyl fluoride 失效
    催化制造氟乙烯

    公开(公告)号：US5880315A

    公开(公告)日：1999-03-09

    申请号：US964445

    申请日：1997-11-04

    申请人： V.N. Mallikarjuna Rao ,  Munirpallam A. Subramanian

    发明人： V.N. Mallikarjuna Rao ,  Munirpallam A. Subramanian

    IPC分类号： B01J27/125 ,  B01J27/138 ,  C07C17/25 ,  C01C17/25

    CPC分类号： B01J27/138 ,  B01J27/125 ,  C07C17/25 ,  Y02P20/582

    摘要： A process for the manufacture of vinyl fluoride (i.e., CH.sub.2 .dbd.CHF, VF or 1141) from 1,1-difluoroethane (i.e., CH.sub.3 CHF.sub.2, F152a or HFC-152a) is disclosed which involves contacting the 1,1-difluoroethane at an elevated temperature (200.degree. C.-400.degree. C.) with a multiphase catalyst composition consisting essentially of (a) fluorides of at least one divalent metal selected from magnesium and zinc, and (b) fluorides of trivalent aluminum, in which phases of the divalent fluorides are homogeneously dispersed with phases of the trivalent fluorides.

    摘要翻译： 公开了从1,1-二氟乙烷（即CH 3 CHF 2，F 152α或HFC-152a）制备氟乙烯（即CH 2 = CHF，VF或1141）的方法，其涉及使1,1-二氟乙烷在升高的 温度（200℃-400℃），其中多相催化剂组合物主要由（a）至少一种选自镁和锌的二价金属的氟化物和（b）三价铝的氟化物组成，其中， 二价氟化物与三价氟化物的相均匀分散。

    Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use
    3.
    发明授权
    Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use 失效
    用于卤代烃加工的催化剂，其前体及其制备和用途

    公开(公告)号：US6127585A

    公开(公告)日：2000-10-03

    申请号：US77267

    申请日：1998-05-27

    申请人： Timothy C. Duzick ,  Velliyur Nott Mallikarjuna Rao ,  Munirpallam A. Subramanian

    发明人： Timothy C. Duzick ,  Velliyur Nott Mallikarjuna Rao ,  Munirpallam A. Subramanian

    IPC分类号： B01J27/13 ,  C07B61/00 ,  C07C17/00 ,  C07C17/20 ,  C07C17/23 ,  C07C17/269 ,  C07C21/18 ,  C07C19/08 ,  B01T27/132 ,  B01T27/138

    CPC分类号： C07C17/269 ,  B01J27/13 ,  C07C17/00 ,  C07C17/206 ,  C07C17/23

    摘要： Processes are disclosed for decreasing the chlorine to carbon ratio for halogenated hydrocarbons containing chlorine and from 1 to 6 carbon atoms, in the presence of a multiphase catalyst. The processes each involve (1) preparing a single phase solid catalyst precursor which has a structure that collapses at a temperature of about 400.degree. C. or less and has the formula (NH.sub.3).sub.6 Ru.sub.l-r-s Co.sub.r Cr.sub.s MF.sub.6, where r+s is in the range of 0.00 to 0.99, and M is at least one trivalent metal selected from the group consisting of Al, Cr, Fe, V, Sc and Ga; and (2) producing the multiphase catalyst by heating the single phase solid catalyst precursor to about 400.degree. C. or less in an non-oxidizing atomsphere to produce a multiphase composition wherein a phase containing ruthenium is homogeneously dispersed with a phase containing metal fluoride.Also disclosed are single phase fluoride compositions having the formula (NH.sub.3).sub.6 Ru.sub.l-r-s Co.sub.r Cr.sub.s MF.sub.6, where r+s is in the range of 0.00 to 0.99, and M is at least one trivalent element selected from the group consisting of Al, Cr, Fe, V, Sc and Ga; and multiphase catalyst compositions consisting essentially of metallic ruthenium and fluorides of at least one element selected from the group consisting of Al, Co, Cr, Fe, V, Sc and Ga, wherein the ruthenium is homogeneously dispersed with phases of the fluorides.

    摘要翻译： PCT No.PCT / US96 / 18967 Sec。 371日期：1998年5月27日 102（e）日期1998年5月27日PCT 1996年11月26日PCT公布。 WO97 / 19751 PCT出版物 日期：1997年6月5日公开了在多相催化剂存在下降低含氯和1至6个碳原子的卤代烃的氯与碳比的方法。 这些方法各自涉及（1）制备单相固体催化剂前体，其具有在约400℃或更低的温度下塌陷并具有式（NH 3）6 Rul-r-sCorCrsMF 6的结构，其中r + s为 范围为0.00〜0.99，M为选自Al，Cr，Fe，V，Sc和Ga中的至少一种三价金属; 和（2）通过在非氧化性原子团中将单相固体催化剂前体加热至约400℃或更低来制备多相催化剂以产生多相组合物，其中含相的钌相与含有金属氟化物的相均匀分散。 还公开了具有式（NH 3）6 Rul-r-sCorCrsMF 6的单相氟化物组合物，其中r + s在0.00至0.99的范围内，M是至少一种选自Al，Cr， Fe，V，Sc和Ga; 以及基本上由金属钌和氟化物组成的多相催化剂组合物，其选自Al，Co，Cr，Fe，V，Sc和Ga中的至少一种元素，其中钌与氟化物的相分散均匀。

    Fluorocarbon manufacturing process
    4.
    发明授权
    Fluorocarbon manufacturing process 失效
    氟碳制造工艺

    公开(公告)号：US6096932A

    公开(公告)日：2000-08-01

    申请号：US360959

    申请日：1999-07-27

    申请人： Munirpallam A. Subramanian

    发明人： Munirpallam A. Subramanian

    IPC分类号： C07B39/00 ,  C07C17/10 ,  C07C21/18

    CPC分类号： C07B39/00 ,  C07C17/10

    摘要： A process is disclosed for increasing the fluorine content of an olefinic compound of the formula C.sub.n H.sub.m F.sub.2n-m, where n is an integer from 2 to 6 and m is an integer from 1 to 2n. The process involves (a) contacting the olefinic compound with a metal fluoride composition of the formula (AgF)(MF.sub.2).sub.x where M is selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and mixtures thereof and x is a number from 0 to 1, at a temperature above 200.degree. C. sufficient to transfer F from the metal fluoride composition to the olefinic compound, thereby producing a chemically reduced metal fluoride composition comprising metallic silver; (b) oxidizing the reduced metal fluoride composition from (a) in the presence of HF to regenerate the metal fluoride composition of the formula (AgF)(MF.sub.2).sub.x ; and (c) recycling regenerated metal fluoride composition of (b) to (a). Also disclosed are a novel composition of the formula Ag.sub.10 F.sub.8 C.sub.2 ; and a process for producing hexafluoroethane which involves heating Ag.sub.10 F.sub.8 C.sub.2 to a temperature sufficient for its decomposition.

    摘要翻译： 公开了用于提高式CnHmF 2 n-m的烯属化合物的氟含量的方法，其中n为2-6的整数，m为1至2n的整数。 该方法包括（a）使烯烃化合物与式（AgF）（MF 2）x的金属氟化物组合物接触，其中M选自Mn，Fe，Co，Ni，Cu，Zn及其混合物，x 是从0到1的数，在高于200℃的温度下，足以将F从金属氟化物组合物转移到烯烃化合物，由此制备包含金属银的化学还原的金属氟化物组合物; （b）在HF存在下使（a）的还原金属氟化物组合物氧化以再生式（AgF）（MF 2）x的金属氟化物组合物; （c）回收（b）〜（a）的再生金属氟化物组合物。 还公开了式Ag10F8C2的新型组合物; 以及涉及将Ag10F8C2加热到足以使其分解的温度的六氟乙烷的制造方法。

    Copper tantalate compositions containing trivalent cations
    10.
    发明授权
    Copper tantalate compositions containing trivalent cations 失效
    含有三价阳离子的钽酸铜组合物

    公开(公告)号：US06765783B2

    公开(公告)日：2004-07-20

    申请号：US10313842

    申请日：2002-12-06

    申请人： Munirpallam A. Subramanian

    发明人： Munirpallam A. Subramanian

    IPC分类号： H01G406

    CPC分类号： H01G4/1254 ,  H01G4/10

    摘要： This invention provides compositions of the formula Cu3Ta3MO12 wherein M is Al, Ga, Fe, Cr, Sc or mixtures thereof. These compositions have high dielectric constant and low loss over a frequency range of from 1 kHz to 1 MHz.

    摘要翻译： 本发明提供式Cu 3 Ti 3 MO 12的组合物，其中M为Al，Ga，Fe，Cr，Sc或其混合物。 这些组合物在1kHz至1MHz的频率范围内具有高介电常数和低损耗。