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1.
公开(公告)号:US11472757B2
公开(公告)日:2022-10-18
申请号:US16757825
申请日:2018-10-25
IPC分类号: C07C17/358 , C07C17/25 , C07C21/18 , C07C17/383
摘要: A method for conversion of a composition containing HCFO-1233zd(Z) and HCFC-244fa to form HCFO-1233zd(E) by reacting a mixture including HCFO-1233zd(Z) and HCFC-244fa in a vapor phase in the presence of a catalyst to simultaneously isomerize HCFO-1233zd(Z) to form HCFO-1233zd(E) and dehydrohalogenate HCFC-244fa to form HCFO-1233zd(E). The catalyst may be a chromium-based catalyst such as chromium trifluoride, chromium oxyfluoride, or chromium oxide, for example.
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公开(公告)号:US20220112144A1
公开(公告)日:2022-04-14
申请号:US17495511
申请日:2021-10-06
发明人: Haiyou Wang , Daniel C. Merkel
IPC分类号: C07C17/389
摘要: A method of producing trifluoroiodomethane (CF3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI), passing the feedstock through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI3) and iodine (I2) from the feedstock, and providing the feedstock to a reactor to produce a trifluoroiodomethane product stream.
Another method of producing trifluoroiodomethane (CF3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI) to a reactor to produce a trifluoroiodomethane product stream, and passing the trifluoroiodomethane product stream from the reactor through at least one column charged with carbonaceous materials to remove hydrogen iodide (HI), hydrogen triiodide (HI3) and iodine (I2) from the trifluoroiodomethane product stream.-
3.
公开(公告)号:US20200115305A1
公开(公告)日:2020-04-16
申请号:US16571948
申请日:2019-09-16
摘要: The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF3I) and hexafluoroacetone (HFA), and a method of forming an azeotrope or azeotrope-like composition comprising the step of combining hexafluoroacetone (HFA) and trifluoroiodomethane (CF3I) to form an azeotrope or azeotrope-like comprising hexafluoroacetone (HFA) and trifluoroiodomethane (CF3I) having a boiling point of about −29.84° C.±0.30° C. at a pressure of about 14.40 psia±0.30 psia.
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公开(公告)号:US10450248B2
公开(公告)日:2019-10-22
申请号:US16177707
申请日:2018-11-01
发明人: Christian Jungong , Daniel C. Merkel , Haiyou Wang
IPC分类号: C07C17/37 , C07C17/20 , C07C17/358 , C07C21/18
摘要: A method for producing 1,3,3,3-tetrafluoropropene (HFO-1234ze, or 1234ze) from 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd, or 1233zd). In one embodiment, HFO-1233zd is subjected to a disproportionation reaction in the presence of a catalyst at an elevated temperature to produce HFO-1234ze as well as 3,3-dichloro-1,1-difluoropropene (HCFO-1232zc). The catalyst may be at least one of a chromium oxyfluoride catalyst, a chromium oxide catalyst, or a metal fluoride catalyst. The reaction may be conducted in the vapor phase at a temperature between 100° C. and 450° C. Advantageously, in the present method, substantially no hydrogen fluoride (HF) is used as a reactant, and substantially no HF is produced as a product.
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公开(公告)号:US10364201B2
公开(公告)日:2019-07-30
申请号:US15076191
申请日:2016-03-21
发明人: Stephen A. Cottrell , John J. Senetar , Hsueh S. Tung , Daniel C. Merkel , Yuon Chiu , Haluk Kopkalli
IPC分类号: C07C17/354 , C07C19/08 , C07C17/38 , C07C17/383 , C07C17/25
摘要: In certain aspects, the present invention relates to methods for increasing the cost efficiency and safety of the hydrogenation of a fluorinated olefin by controlling the reaction conditions and parameters. In further aspects, the hydrogenation reaction is provided in a two stage reaction wherein the reactant amounts, temperature and other parameters are controlled such that the conversion percentage, selectivity, and reaction parameters are all within commercially acceptable levels.
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公开(公告)号:US20190194097A1
公开(公告)日:2019-06-27
申请号:US16017526
申请日:2018-06-25
IPC分类号: C07C17/25 , C07C17/20 , C07C21/18 , C07C17/087 , C07C19/10
CPC分类号: C07C17/25 , C07C17/087 , C07C17/20 , C07C17/206 , C07C19/10 , C07C21/18
摘要: The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in the presence of a fluorination catalyst, where by using 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) of high purity, the need to add an oxidizing agent (typically chlorine) to keep the catalyst active can be avoided. The HCFC-244bb is then used as an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).
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公开(公告)号:US10207972B2
公开(公告)日:2019-02-19
申请号:US14955459
申请日:2015-12-01
摘要: Provided are azeotropic or azeotrope-like mixtures of 1,3,3,3-tetrachloroprop-1-ene (HCO-1230zd) and hydrogen fluoride. Such compositions are useful as a feed stock in the production of HFC245fa and HCFO1233zd.
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公开(公告)号:US10005704B2
公开(公告)日:2018-06-26
申请号:US14604867
申请日:2015-01-26
IPC分类号: C07C17/25 , C07C17/087 , C07C17/20 , C07C19/10 , C07C21/18
摘要: The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in the presence of a fluorination catalyst, where by using 2-chloro-3,3,3, -trifluoropropene (HCFO-1233xf) of high purity, the need to add an oxidizing agent (typically chlorine) to keep the catalyst active can be avoided. The HCFC-244bb is then used as an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).
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公开(公告)号:US10000431B1
公开(公告)日:2018-06-19
申请号:US15883541
申请日:2018-01-30
发明人: Daniel C. Merkel , Hsueh Sung Tung
IPC分类号: C07C17/25 , C07C17/20 , C07C17/383
CPC分类号: C07C17/206 , C07C17/25 , C07C17/383 , C07C19/10 , C07C21/18
摘要: A process for enhancing the selective and efficient production of (E)-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E), or 1233zd(E)). During the manufacture of HCFO-1233zd(E) by fluorination of 1,1,1,3,3-pentachloropropane (HCC-240fa), a by-product of 1,1,3,3-tetrachloro-1-fluoropropane (HCFC-241fa) is separated and then dehydrochlorinated to form 1,3,3-trichloro-3-fluoropropene (HCFO-1231zd). The HCFO-1231zd is then fluorinated to form HCFO-1233zd(E).
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公开(公告)号:US20180057433A1
公开(公告)日:2018-03-01
申请号:US15252537
申请日:2016-08-31
发明人: Daniel C. Merkel , Konstantin A. Pokrovski , Hsueh Sung Tung , Haiyou Wang , Ryan J. Hulse , Hang T. Pham
CPC分类号: C07C17/35 , C07C17/04 , C07C17/206 , C07C17/21 , C07C17/25 , C07C21/04 , C07C21/18 , C07C19/08
摘要: Azeotropic or azeotrope-like mixtures of 1,3,3-trichloro-3-fluoroprop-1-ene (HCFO-1231zd) and hydrogen fluoride (HF). Such compositions are useful as a feed stock or intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa),1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), and 1,3,3,3-tetrafluoropropene (HFO-1234ze).
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