公开(公告)号：US11358919B2

公开(公告)日：2022-06-14

申请号：US17018457

申请日：2020-09-11

申请人： Mexichem Fluor S.A. de C.V.

发明人： Andrew Paul Sharratt

IPC分类号： C07C17/087 ,  C07C17/20 ,  C07C17/25 ,  C07C17/38 ,  C07C17/395 ,  C07C21/18 ,  C07C19/08

摘要： The invention relates to a process comprising contacting a composition comprising a (hydro)halocarbon and a compound of formula Rf—C≡CX with a basic solution comprising an hydroxide, an alkoxide and/or an amide to reduce the concentration of Rf—C≡CX, wherein Rf is a perfluorinated alkyl group and X is H, F, Cl, Br, or I. The invention further relates to process for preparing a (hydro)halocarbon comprising (i) converting a starting material, optionally in the presence of HF and/or a catalyst, to a composition comprising the (hydro)halocarbon and a compound of formula Rf—C≡CX, wherein Rf is a perfluorinated alkyl group and X is H, F, Cl, Br, or I; (ii) contacting the composition with a basic solution comprising an hydroxide, an alkoxide and/or an amide to reduce the concentration of the compound of formula Rf—C≡CX; and (iii) recovering the (hydro)halocarbon.

公开(公告)号：US20220153665A1

公开(公告)日：2022-05-19

申请号：US17600179

申请日：2020-04-01

申请人： ARKEMA FRANCE

发明人： Emmanuel BOUSSARIE ,  Kevin HISLER ,  Anne PIGAMO ,  Bertrand COLLIER

IPC分类号： C07C17/395 ,  C07C17/20

摘要： The present invention relates to a process for purifying 1-chloro-3,3,3-trifluoropropene comprising the steps of: a) providing a stream comprising 1-chloro-3,3,3-trifluoropropene and at least one compound of formula HX wherein X is F or Cl; b) bringing the stream from step a) into contact with a solution A comprising at least one sulfite salt of formula Yn+mSO3 wherein Y is an alkali or alkaline-earth metal, n=1 or 2, and m=2 when n=1 or m=1 when n=2; in order to form a neutralized stream A1 comprising 1-chloro-3,3,3-trifluoropropene.

公开(公告)号：US20220097030A1

公开(公告)日：2022-03-31

申请号：US17427554

申请日：2020-02-24

申请人： Zhejiang Research Institute of Chemical Industry Co., Ltd. ,  Zhejiang Lantian Environmental Protection Hi-Tech Co., Ltd. ,  Sinochem Lantian Co., Ltd.

发明人： Jianjun ZHANG ,  Wenfeng HAN ,  Shucheng WANG ,  Wucan LIU ,  Feixiang ZHOU

IPC分类号： B01J27/132 ,  B01J37/26 ,  B01J27/13 ,  C07C17/20

摘要： Disclosed is a method for reducing carbon deposits on a catalyst in recycling HFC-23. The recycling is realized by means of a fluorine-chlorine exchange reaction with HFC-23 and a halogenated hydrocarbon. The catalyst for the fluorine-chlorine exchange reaction comprises a main body catalyst and a precious metal. The precious metal is selected from at least one of Pt, Pd, Ru, Au or Rh, and has an addition amount of 0.01-2 wt %. During the fluorine-chlorine exchange reaction, hydrogen gas is introduced. The invention has advantages of good catalyst stability, long life, etc.

公开(公告)号：US20210395173A1

公开(公告)日：2021-12-23

申请号：US17405440

申请日：2021-08-18

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Takehiro CHAKI ,  Tsubasa NAKAUE ,  Megumi KUSHIDA ,  Kazuhiro TAKAHASHI

IPC分类号： C07C17/20

摘要： The present disclosure provides a method for producing HFC-143 at low cost and more efficiently than when using conventional methods. Specifically, the present disclosure provides a method for producing 1,1,2-trifluoroethane (HFC-143), comprising performing one or more fluorination reactions by bringing at least one chlorine-containing compound selected from the group consisting of 2-chloro-1,1-difluoroethane (HCFC-142) and 1-chloro-1,2-difluoroethane (HCFC-142a) into contact with hydrogen fluoride to obtain a reaction gas containing HFC-143, hydrogen chloride, and hydrogen fluoride.

公开(公告)号：US11155506B2

公开(公告)日：2021-10-26

申请号：US16855500

申请日：2020-04-22

申请人： MEXICHEM FLUOR S.A. DE C.V.

发明人： Sheryl Louise Johnson ,  Stephen Andrew Flaherty ,  Clive Robert Giddis

IPC分类号： C07C17/20 ,  B01J23/06 ,  B01J23/26 ,  C07C17/25 ,  C07C19/08 ,  C07C21/18

摘要： The present invention provides a process for preparing 1,1,1,2,2-pentafluoropropane (245cb), the process comprising gas phase catalytic dehydrochlorination of a composition comprising 1,1,1-trifluoro-2,3-dichloropropane (243db) to produce an intermediate composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3CCl═CH2, 1233xf), hydrogen chloride (HCl) and, optionally, air; and gas phase catalytic fluorination with hydrogen fluoride (HF) of the intermediate composition to produce a reactor product composition comprising 245cb, HF, HCl and air; wherein the process is carried out with a co-feed of air.

公开(公告)号：US20210292627A1

公开(公告)日：2021-09-23

申请号：US17336575

申请日：2021-06-02

申请人： THE CHEMOURS COMPANY FC, LLC

发明人： Velliyur Nott Mallikarjuna Rao ,  Mario Joseph Nappa ,  Allen Capron Sievert

IPC分类号： C09K5/04 ,  C07C17/00 ,  C07C17/087 ,  C07C17/20 ,  C07C17/23 ,  C07C17/354 ,  C07C19/08 ,  C07C19/10

摘要： A process is disclosed for making CF3CF═CHF. The process involves reacting CF3CClFCCl2F with H2 in a reaction zone in the presence of a catalyst to produce a product mixture comprising CF3CF═CHF. The catalyst has a catalytically effective amount of palladium supported on a support selected from the group consisting of alumina, fluorided alumina, aluminum fluoride and mixtures thereof and the mole ratio of H2 to CF3CClFCCl2F fed to the reaction zone is between about 1:1 and about 5:1. Also disclosed are azeotropic compositions of CF3CClFCCl2F and HF and azeotropic composition of CF3CHFCH2F and HF.

公开(公告)号：US11084768B2

公开(公告)日：2021-08-10

申请号：US16976599

申请日：2019-03-04

申请人： Arkema France

发明人： Laurent Wendlinger ,  Dominique Deur-Bert ,  Anne Pigamo

IPC分类号： C07C17/20 ,  C07C17/25 ,  C07C21/18 ,  B01J23/26

摘要： A process for the production of 2,3,3,3-tetrafluoropropene including the stages: i) in a first reactor, bringing a stream A including 2-chloro-3,3,3-trifluoropropene into contact with hydrofluoric acid in the gas phase in the presence of a catalyst in order to produce a stream B including 2,3,3,3-tetrafluoropropene, HCl, HF and unreacted 2-chloro-3,3,3-trifluoropropene; and ii) in a second reactor, bringing hydrofluoric acid into contact, in the gas phase in the presence or not of a catalyst, with a stream including at least one chlorinated compound selected from the group of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, 2,3,3,3-tetrachloropropene and 1,1,2,3-tetrachloropropene, in order to produce a stream C including 2-chloro-3,3,3-trifluoropropene, wherein the stream B obtained in stage i) feeds the second reactor used for stage ii); and wherein the electrical conductivity of the stream A provided in stage i) is less than 15 mS/cm.

公开(公告)号：US20210188743A1

公开(公告)日：2021-06-24

申请号：US16769949

申请日：2018-12-04

申请人： THE CHEMOURS COMPANY FC, LLC

发明人： Sheng Peng ,  Viacheslav A. Petrov

IPC分类号： C07C17/20 ,  C09K5/04 ,  C11D3/24 ,  A62D1/00 ,  C06B49/00 ,  C08J9/14 ,  C09K3/14

摘要： The present application provides processes and intermediates for preparing (E)-1,1,1,4,4,4-hexafluoro-2-butene and compositions which may be useful in applications including refrigerants, high-temperature heat pumps, organic Rankine cycles, as fire extinguishing/fire suppression agents, propellants, foam blowing agents, solvents, and/or cleaning fluids.

公开(公告)号：US11028029B2

公开(公告)日：2021-06-08

申请号：US16758097

申请日：2018-11-08

申请人： Arkema France

发明人： Bertrand Collier ,  Dominique Deur-Bert ,  Anne Pigamo ,  Laurent Wendlinger

IPC分类号： C07C17/25 ,  B01J23/26 ,  C07C17/20 ,  C07C21/18

摘要： The present invention relates to a process for the production of 2,3,3,3-tetrafluoropropene comprising the stages: i) in a first reactor, bringing 2-chloro-3,3,3-trifluoropropene into contact with hydrofluoric acid in the gas phase in the presence of a catalyst, in order to produce a stream A comprising 2,3,3,3-tetrafluoropropene, HF and unreacted 2-chloro-3,3,3-trifluoropropene; and ii) in a second reactor, bringing hydrofluoric acid into contact, in the gas phase in the presence or absence of a catalyst, with at least one chlorinated compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, 2,3,3,3-tetrachloropropene and 1,1,2,3-tetrachloropropene, in order to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene, characterized in that the stream A obtained in stage i) feeds said second reactor used for stage ii); and in that the pressure at the inlet of said first reactor of stage i) is greater than the pressure at the inlet of said second reactor of stage ii).

公开(公告)号：US10974227B2

公开(公告)日：2021-04-13

申请号：US16032605

申请日：2018-07-11

申请人： MEXICHEM AMANCO HOLDING S.A. DE C.V.

发明人： Andrew P Sharratt

IPC分类号： B01J23/06 ,  B01J23/26 ,  B01J35/00 ,  B01J35/10 ,  B01J37/00 ,  B01J37/03 ,  C07C17/20 ,  C07C17/21 ,  C07B39/00 ,  B01J27/138 ,  B01J35/02 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  B01J21/00 ,  B01J23/00 ,  B01J25/00 ,  B01J29/00 ,  B01J23/02 ,  B01J37/26

摘要： A new chromium-containing fluorination catalyst is described. The catalyst comprises an amount of zinc that promotes activity. The zinc is contained in aggregates which have a size across their largest dimension of up to 1 micron. The aggregates are distributed throughout at least the surface region of the catalyst and greater than 40 weight % of the aggregates contain a concentration of zinc that is within ±1 weight % of the modal concentration of zinc in those aggregates.