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    Dehydrochlorination of HCFC-336 isomers to 1,1,1,4,4,4-hexafluoro-2-butyne
    52.
    发明授权
    Dehydrochlorination of HCFC-336 isomers to 1,1,1,4,4,4-hexafluoro-2-butyne 有权
    将HCFC-336异构体脱氯化氢化为1,1,1,4,4,4-六氟-2-丁炔

    公开(公告)号：US09440896B2

    公开(公告)日：2016-09-13

    申请号：US14416313

    申请日：2013-09-27

    Applicant: THE CHEMOURS COMPANY FC LLC

    Inventor： Sheng Peng ,  Mario Joseph Nappa

    IPC: C07C17/25

    CPC classification number: C07C17/25 ,  C07C21/22

    Abstract: Disclosed is a process for producing hexafluoro-2-butyne comprising, reacting HCFC-336 with an aqueous solution of an alkali metal hydroxide in the presence of a quaternary alkylammonium salt which comprises at least one alkyl group of at least 8 carbons, and recovering the hexafluoro-2-butyne, wherein the conversion of dichloro-1,1,1,4,4,4-hexafluorobutane is at least 50% per hour. Also disclosed is a process for producing hexafluoro-2-butyne comprising, reacting HCFC-336 with an aqueous solution of an alkali metal hydroxide in the presence of a quaternary alkylammonium salt having alkyl groups of from four to ten carbon atoms, and mixtures thereof, and a non-ionic surfactant, and recovering the hexafluoro-2-butyne, and wherein the conversion of dichloro-1,1,1,4,4,4-hexafluorobutane to hexafluoro-2-butyne is at least 20% per hour.

    Abstract translation: 公开了一种生产六氟-2-丁炔的方法，其包括在含有至少一个至少8个碳原子的烷基的季烷基铵盐存在下使HCFC-336与碱金属氢氧化物的水溶液反应，并回收 六氟-2-丁炔，其中二氯-1,1,1,4,4,4-六氟丁烷的转化率为至少50％/小时。 还公开了一种生产六氟-2-丁炔的方法，其包括在具有四至十个碳原子的烷基的季烷基铵盐及其混合物的存在下使HCFC-336与碱金属氢氧化物的水溶液反应， 和非离子表面活性剂，并回收六氟-2-丁炔，其中二氯-1,1,1,4,4,4-六氟丁烷转化为六氟-2-丁炔至少为20％/小时。

    Dehydrofluorination of 245fa to 1234ze
    53.
    发明授权
    Dehydrofluorination of 245fa to 1234ze 有权
    脱卤化氢245fa至1234ze

    公开(公告)号：US09302962B2

    公开(公告)日：2016-04-05

    申请号：US14819807

    申请日：2015-08-06

    Applicant: THE CHEMOURS COMPANY FC LLC

    Inventor： Sheng Peng ,  Mario Joseph Nappa

    IPC: C07C17/00 ,  C07C17/25

    CPC classification number: C07C17/25 ,  C07C21/18

    Abstract: A method of producing a fluoropropane of formula CF3CH═CHF, comprising contacting a mixture of 1,1,1,3,3-pentafluoropropane and Z-1,3,3,3-tetrafluoropropene in the gas phase with a catalyst comprising at least one catalyst selected from the group consisting of fluorinated Cr2O3 or Cr/Ni on fluoride alumina, in the presence of an oxygen containing gas, to form a mixture comprising Z-1,3,3,3-tetrafluoropropane, E-1,3,3,3,-tetrafluoropropene, hydrogen fluoride, and optionally unreacted 1,1,1,3,3-pentafluoropropane, separating the E-1,3,3,3-tetrafluoropropene from the Z-isomer and any unreacted 1,1,1,3,3-pentafluoropropane, if present, and recovering said E-1,3,3,3-tetrafluoropropene.

    Abstract translation: 一种制备式CF 3 CH = CHF氟代丙烷的方法，包括使气相中的1,1,1,3,3-五氟丙烷和Z-1,3,3,3-四氟丙烯的混合物与至少包含 在含氧气体的存在下，在氟化矾土上选自氟化Cr 2 O 3或Cr / Ni的一种催化剂，以形成包含Z-1,3,3,3-四氟丙烷，E-1,3， 3,3,3-四氟丙烯，氟化氢和任选的未反应的1,1,1,3,3-五氟丙烷，从Z-异构体中分离出E-1,3,3,3-四氟丙烯和任何未反应的1,1， 如果存在1,3,3-五氟丙烷，并回收所述E-1,3,3,3-四氟丙烯。

    Process for the reduction of RƒC≡CX impurities in fluoroolefins
    58.
    发明授权
    Process for the reduction of RƒC≡CX impurities in fluoroolefins 有权

    公开(公告)号：US11905226B2

    公开(公告)日：2024-02-20

    申请号：US17815608

    申请日：2022-07-28

    Applicant: THE CHEMOURS COMPANY FC, LLC

    Inventor： Mario Joseph Nappa ,  Xuehui Sun ,  David Richard Corbin

    IPC: C07C17/389 ,  C07C17/25 ,  C07C17/087

    CPC classification number: C07C17/389 ,  C07C17/087 ,  C07C17/25 ,  Y02P20/582

    Abstract: This disclosure relates to processes which involve: contacting a mixture comprising at least one fluoroolefin and at least one impurity with at least one zeolite to reduce the concentration of the at least one impurity in the mixture; and the at least one zeolite is selected from the group consisting of zeolites having pore opening of at least 4 Angstroms and no more than about 5 Angstroms, zeolites having pore opening of at least about 5 Angstroms and Sanderson electronegativity of no more than about 2.6, and mixtures thereof; provided that the at least one zeolite is not zeolite 4A. This disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CF3CF═CH2, CF3CH═CHF, and mixtures thereof; and relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CF3CCl═CH2, CF3CH═CHCl, and mixtures thereof.

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