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    Processes for synthesis of tetrafluoropropene
    1.
    发明授权
    Processes for synthesis of tetrafluoropropene 有权
    合成四氟丙烯的方法

    公开(公告)号：US07189884B2

    公开(公告)日：2007-03-13

    申请号：US11118530

    申请日：2005-04-29

    申请人： Sudip Mukhopadhyay ,  Haridasan K. Nair ,  HsuehSung Tung ,  Michael Van Der Puy

    发明人： Sudip Mukhopadhyay ,  Haridasan K. Nair ,  HsuehSung Tung ,  Michael Van Der Puy

    IPC分类号： C07C21/18

    CPC分类号： C07C17/06 ,  C07C17/04 ,  C07C17/206 ,  C07C17/21 ,  C07C17/25 ,  C07C21/18 ,  C07C19/14 ,  C07C19/16 ,  C07C19/01 ,  C07C19/10

    摘要： Disclosed in one embodiment is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises (a) reacting a compound of formula (I) X1X2 with a compound of formula (II) CF3CH═CH2 to produce a reaction product comprising a compound of formula (III) CF3CHX1CH2X2, wherein X1 and X2 are each independently selected from the group consisting of hydrogen, chlorine, bromine and iodine, provided that X1 and X2 are not both hydrogen; (b) when X2 in formula (III) is not fluorine, fluorinating the compound of formula (III) to produce a reaction product comprising a compound of formula (III) wherein X1 is as described above and X2 is fluorine; and (c) exposing said compound of formula (III) to reaction conditions effective to convert said compound to 1,3,3,3-tetrafluoropropene.

    摘要翻译： 在一个实施方案中公开了一种用于合成1,3,3,3-四氟丙烯的方法，其包括（a）使式（I）化合物X 1，X 2， 与式（II）化合物CF 3 CH-CH 2取代，生成包含式（III）化合物的反应产物CF 3 其中X 1和X 2都是（CH 2）2 CH 2，其中X 1和X 2都是 各自独立地选自氢，氯，溴和碘，条件是X 1和X 2都不是氢; （b）当式（III）中的X 2不是氟时，氟化式（III）化合物以产生包含式（III）化合物的反应产物，其中X 1， / SUP>如上所述，X 2是氟; 和（c）将所述式（III）化合物暴露于有效将所述化合物转化为1,3,3,3-四氟丙烯的反应条件。

    Catalytic conversion of hydrofluoroalkanol to hydrofluoroalkene
    2.
    发明授权
    Catalytic conversion of hydrofluoroalkanol to hydrofluoroalkene 有权
    氢氟烷醇催化转化成氢氟烯烃

    公开(公告)号：US07026520B1

    公开(公告)日：2006-04-11

    申请号：US11006922

    申请日：2004-12-08

    申请人： Sudip Mukhopadhyay ,  HsuehSung Tung ,  Haridasan K. Nair

    发明人： Sudip Mukhopadhyay ,  HsuehSung Tung ,  Haridasan K. Nair

    IPC分类号： C07C17/00 ,  C07C17/08 ,  C07C21/18 ,  C07C23/00 ,  C07C25/13

    CPC分类号： C07C17/00 ,  C07C17/25 ,  C07C21/18

    摘要： Methane is used as the selective dehydrating agent for the production of 2,3,3,3-tetrafluoro-1-propene (R1234yf) from 2,2,3,3,3-pentafluoro-1-propanol. Supported transition metal catalysts are prepared and used for this reaction with high activity. Almost 58% selectivity to R1234yf is obtained at an alcohol conversion level of 60% using unsupported Ni-mesh as the catalyst. Pd and Pt show almost similar level of conversion; however, the selectivity to the desired product is low. The activity of the metal catalyst was found to be a function of the type of support material, activated carbon showing better activity than alumina. Different important process parameters such as temperature, pressure, and contact time are studied to optimize the process. High pressure and temperature are deleterious to the rate of 1234yf formation; yet, the highest yield to 1234yf is obtained while performing a reaction at 494° C. with a contact time of 23 sec.

    摘要翻译： 甲烷用作用于从2,2,3,3,3-五氟-1-丙醇生产2,3,3,3-四氟-1-丙烯（R1234yf）的选择性脱水剂。 制备负载型过渡金属催化剂，并以高活性用于该反应。 使用未负载的Ni-网作为催化剂，在60％的醇转化率下获得对R1234yf几乎58％的选择性。 Pd和Pt显示几乎相似的转化水平; 然而，对所需产物的选择性低。 发现金属催化剂的活性是支撑材料的类型的函数，活性炭表现出比氧化铝更好的活性。 研究了不同的重要工艺参数，如温度，压力和接触时间，以优化工艺。 高压和高温对于1234yf的形成是有害的; 然而，在494℃下以23秒的接触时间进行反应，获得了对1234yf的最高产率。

    Method for producing fluorinated organic compounds
    3.
    发明授权
    Method for producing fluorinated organic compounds 有权
    氟化有机化合物的制备方法

    公开(公告)号：US08383867B2

    公开(公告)日：2013-02-26

    申请号：US11592476

    申请日：2006-11-03

    申请人： Sudip Mukhopadhyay ,  Haridasan K. Nair ,  Rajesh K. Dubey ,  Rajiv R. Singh ,  George A. Shia

    发明人： Sudip Mukhopadhyay ,  Haridasan K. Nair ,  Rajesh K. Dubey ,  Rajiv R. Singh ,  George A. Shia

    IPC分类号： C07C17/25 ,  C07C19/08 ,  C07C21/18 ,  C07C17/00 ,  C07C23/00 ,  C07C25/13 ,  C07C22/00

    CPC分类号： C07C17/278 ,  C07C17/23 ,  C07C17/25 ,  C07C21/18 ,  C07C19/10

    摘要： Disclosed is a method for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of formula (I): CF3CFnCHmXa-m  (I) to at least one compound of formula (II) CF3CZCHZ  (II). where each X is independently Cl, F, I or Br; each Z is independently H or F; n is 1 or 2; m is 1, 2 or 3, provided that when n is 1, m is 1 or 2; a is 2 or 3, and a-m≧0. Certain embodiments include the step of reacting fluorinated C2 olefin, such as tetrafluoroethylene, with a Cl addition agent under conditions effective to produce a compound of formula (I).

    摘要翻译： 公开了一种制备氟化有机化合物的方法，包括氢氟丙烯，其优选包括将至少一种式（I）化合物：CF 3 CF n CH m X a-m（I）转化为至少一种式（II）CF 3 CZCHZ（II）化合物。 其中每个X独立地为Cl，F，I或Br; 每个Z独立地为H或F; n为1或2; m为1,2或3，条件是当n为1时，m为1或2; a为2或3，a-m≥0。 某些实施方案包括在有效产生式（I）化合物的条件下，将氟化C 2烯烃如四氟乙烯与Cl加成剂反应的步骤。