WO2000076945A2 - Uv-aktivierte chlorierung - Google Patents
Uv-aktivierte chlorierung Download PDFInfo
- Publication number
- WO2000076945A2 WO2000076945A2 PCT/DE2000/001953 DE0001953W WO0076945A2 WO 2000076945 A2 WO2000076945 A2 WO 2000076945A2 DE 0001953 W DE0001953 W DE 0001953W WO 0076945 A2 WO0076945 A2 WO 0076945A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chlorine
- trifluoro
- chloroethane
- mol
- hcfc
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/013—Preparation of halogenated hydrocarbons by addition of halogens
- C07C17/04—Preparation of halogenated hydrocarbons by addition of halogens to unsaturated halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/395—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification of at least one compound
Definitions
- the invention relates to a process for the production of certain chlorine-containing alkanes by UV-assisted chlorination.
- the object of the present invention is to provide a process with which chlorine-containing alkanes can be prepared with high reaction rate and high selectivity. This object is achieved by the method of the present invention.
- the process according to the invention for the production of chlorine-containing alkanes selected from the group comprising pentachloroethane; 1, 1, 1-trifluoro-2, 2, 2-trichloroethane; 1,1,1-trifluoro-2,2-dichloroethane and 1, 1, 1, 2-tetrachloro-2, 2-difluoro-ethane by adding chlorine to starting compounds with CC double bonds or by exchanging hydrogen for chlorine and for the preparation of purified 1, 1, 1, 3, 3-pentafluorobutane from 1, 1, 1, 3, 3-pentafluorobutane which is contaminated by compounds with CC double bonds or CC triple bonds with chlorination of these unsaturated compounds that contacting the starting compound in the gas phase or liquid phase with elemental chlorine under the irradiation of UV light with a wavelength of ⁇ > 280 nm.
- a variant of the invention relates to use as a manufacturing process (production process).
- Another variant relates to the use as a cleaning process. In the following, the application as a manufacturing process is first explained.
- the process for the preparation of pentachloroethane from trichlorethylene is very particularly preferably used, for the preparation of 1, 1, 1, 2-tetrachloro-2, 2-difluoroethane from 1-chloro-l, 1-difluoroethane and for the preparation of 1,1 , 1-trifluoro-2, 2, 2-trichloroethane from 1, 1, 1-trifluoro-2, 2-dichloroethane.
- the molar ratio of starting compound to elemental chlorine is in the range from 1: 0.1 to 1:10 when adding chlorine, and in the range from 1: 0.01 to 1: 5 when replacing hydrogen with chlorine. If you want to replace only one of two H atoms when replacing hydrogen with chlorine, the ratio of starting compounds to chlorine is in the upper range (lower chlorine content).
- the chlorine is preferably used in 0.9 times to 1.3 times the amount stoichiometrically required.
- Another variant of the invention relates to the purification of 1, 1, 1, 3, 3-pentafluorobutane (HFC-365mfc) with the aim of removing photochlorinated olefinic impurities. It has been shown that the olefinic compounds which are contained as a result of production can be converted essentially selectively by the photochlorination according to the invention and can be separated off in a simplified manner in the form of the chlorination products.
- Irradiation lamps e.g. Philips fluorescent tubes
- UV light a wavelength at or above 280 nm ( ⁇ > 280 nm) can advantageously be used for the irradiation. Irradiation through quartz glass is possible here.
- this variant is that these lamps emit in the absorption area of elemental chlorine.
- radiation lamps for example Hg medium or high-pressure lamps
- irradiation must be carried out through a glass which is only permeable to light of a wavelength of 280 nm or above ( ⁇ > 280 nm), that is to say the shorter-wave radiation component with ⁇ ⁇ 280 nm is filtered out.
- Borosilicate glasses for example, are well suited for this.
- Such glasses usually contain 7 to 13% B 2 0 3 , 70 to 80% Si0 2 , further 2 to 7% Al 2 0 3 and 4 to 8% Na 2 0 + K 2 0 and 0 to 5% alkaline earth metal oxides.
- Well-known trademarks for borosilicate glasses are Duran, Pyrex and Solidex.
- an irradiation lamp which emits light above the specified wavelength
- glasses which are transmissive to light above the specified wavelength (ie are correspondingly opaque to light below the specified wavelength).
- Lamps e.g. B. Hg high-pressure lamps that emit mainly or only in the wave range at or above 280 nm due to a dopant.
- Hg high-pressure lamps for example, have a very intense band in the range of 254 nm, which, as has been described above, e.g. B. is filtered out by borosilicate glass. This line is strongly suppressed in Hg high-pressure lamps doped with metal iodides. Surprisingly, the often disproportionate increase in the conversion rate in the case of such doped emitters is excellent.
- Hg high-pressure emitters which are doped with gallium iodide and especially with emitters that are doped with thallium iodide or cadmium iodide. Even when such radiators are used, glass is advantageously used which filters out the shorter-wave radiation component with ⁇ ⁇ 280 nm. It is expedient and technically advantageous to use the entire radiation range with wavelengths above the limit mentioned.
- HFC-365mfc can be cleaned in the liquid or gas phase.
- Pentachloroethane is expediently prepared in the liquid phase.
- CFC-112a, CFC-113a and HCFC-123 are expediently produced in the gas phase. Continuous work is particularly possible in the gas phase.
- the process is advantageously carried out in a flow-through apparatus.
- the procedure is such that the starting material (the corresponding hydrogen and halogen-containing starting compound and chlorine) is fed continuously into the flow-through apparatus and the reaction product is continuously drawn off in accordance with the amount fed in.
- the average residence time in the reaction vessel is preferably between 0.01 and 30 minutes, preferably between 0.01 and 3 minutes, in particular between 0.5 and 3.0 minutes. Even with very short dwell times, e.g. B. between 0.04 and 0.5 minutes, good results are already achieved.
- the optimal average residence time which u. a. depends on the lamp power and on the geometric parameters of the irradiation apparatus (flow apparatus), you can do it by simple manual tests and analysis of the product flow, e.g. B. by gas chromatography.
- the product is ß separated after leaving the respective reactions, e.g. B. by freezing.
- the process is preferably carried out batchwise.
- the advantage of the process is high turnover with high selectivity.
- Double jacket glass reactor double jacket for oil heating
- immersion shaft made of quartz glass (400 ml reaction volume) equipped with HQ immersion lamp TQ 718 from Heraeus Noble-light with water cooling.
- the 1, 1, 1-trifluoro-2, 2-dichloroethane was evaporated and fed to the reactor in gaseous form from below together with chlorine.
- the outlet of the product flow was on the top.
- the reaction temperature was 110 ° C.
- the 365mfc is pumped into the Pfaudier.
- the Hg immersion lamp 700 watts was switched on with stirring.
- 20 ml / h of chlorine are metered through an immersion tube until no more olefins were detectable in the SIM run of the GC-MSD.
- the mercury immersion lamp was operated for another hour.
- the 365mfc treated in this way is drained off and finely distilled in a distillation column (height: 3 m, diameter 100 mm, filled with 10 mm Raschig packing made of glass).
- the pentachloroethane produced in this way had a purity of 99.4% (remainder: unreacted trichlorethylene and hexachloretane) and can be used without further cleaning.
- the pentachloroethane thus produced had a purity of 83.3% (remainder: unreacted trichlorethylene and large amounts of hexachloroethane). Examples 15 to 19;
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50011826T DE50011826D1 (de) | 1999-06-16 | 2000-06-14 | Uv-aktivierte chlorierung |
JP2001503414A JP4891503B2 (ja) | 1999-06-16 | 2000-06-14 | Uv−活性化塩素化 |
AU61483/00A AU6148300A (en) | 1999-06-16 | 2000-06-14 | Uv-activated chlorination |
EP00947799A EP1189856B1 (de) | 1999-06-16 | 2000-06-14 | Uv-aktivierte chlorierung |
AT00947799T ATE312065T1 (de) | 1999-06-16 | 2000-06-14 | Uv-aktivierte chlorierung |
US10/016,127 US20020125122A1 (en) | 1999-06-16 | 2001-12-17 | UV-activated chlorination process |
US10/627,755 US20040016633A1 (en) | 1999-06-16 | 2003-07-28 | UV-activated chlorination process |
US11/008,109 US7282120B2 (en) | 1999-06-16 | 2004-12-10 | UV-activated chlorination process |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19927394 | 1999-06-16 | ||
DE19927394.4 | 1999-06-16 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/016,127 Continuation US20020125122A1 (en) | 1999-06-16 | 2001-12-17 | UV-activated chlorination process |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000076945A2 true WO2000076945A2 (de) | 2000-12-21 |
WO2000076945A3 WO2000076945A3 (de) | 2001-05-31 |
Family
ID=7911391
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/001953 WO2000076945A2 (de) | 1999-06-16 | 2000-06-14 | Uv-aktivierte chlorierung |
Country Status (9)
Country | Link |
---|---|
US (3) | US20020125122A1 (de) |
EP (1) | EP1189856B1 (de) |
JP (1) | JP4891503B2 (de) |
AT (1) | ATE312065T1 (de) |
AU (1) | AU6148300A (de) |
DE (2) | DE10029283A1 (de) |
DK (1) | DK1189856T3 (de) |
ES (1) | ES2251386T3 (de) |
WO (1) | WO2000076945A2 (de) |
Cited By (2)
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EP3650437A1 (de) | 2018-11-08 | 2020-05-13 | Fujian Yongjing Technology Co., Ltd. | Neues verfahren zur herstellung von 1,1,1-trifluor-2-chlorethan (hcfc-133a) und/oder trifluorethylamin (tfea) |
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JP6059246B2 (ja) | 2011-12-02 | 2017-01-11 | ブルー キューブ アイピー エルエルシー | 塩素化アルカンの製造方法 |
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CN104058928B (zh) * | 2014-06-19 | 2017-11-21 | 巨化集团技术中心 | 一种含溴氟代烷烃合成中提高装置生产能力的方法 |
WO2019003896A1 (ja) * | 2017-06-27 | 2019-01-03 | Agc株式会社 | 2-クロロ-1,1,1,2-テトラフルオロプロパンおよび/または3-クロロ-1,1,1,2-テトラフルオロプロパンの製造方法、ならびに2,3,3,3-テトラフルオロプロペンの製造方法 |
JP6958596B2 (ja) * | 2019-07-01 | 2021-11-02 | ダイキン工業株式会社 | アルカンの製造方法 |
JP7247045B2 (ja) * | 2019-07-26 | 2023-03-28 | 関東電化工業株式会社 | 1,1,2-トリクロロ-2-フルオロエテン(tcfe)の製造方法 |
Citations (7)
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US4060469A (en) * | 1976-12-21 | 1977-11-29 | Allied Chemical Corporation | Preparation of 1,1,1-trifluoro-2,2-dichloroethane |
EP0407989A1 (de) * | 1989-07-14 | 1991-01-16 | Hoechst Aktiengesellschaft | Verfahren zur Herstellung von 1,1,1-Trifluor-2,2-dichlorethan durch Photochlorierung |
WO1993012058A1 (en) * | 1991-12-18 | 1993-06-24 | Allied-Signal Inc. | Process for removing 2-chloro-1,1-difluoroethylene from 1,1,1,2-tetrafluoroethane and co-producing 2-chloro-1,1,1,2-tetrafluoroethane |
US5421971A (en) * | 1993-09-03 | 1995-06-06 | Alliedsignal Inc. | Hydrochlorofluorocarbons and hydrofluorocarbons and methods for producing the same |
WO1997037955A1 (en) * | 1996-04-04 | 1997-10-16 | Alliedsignal Inc. | PURIFICATION OF 1,1,1,3,3-PENTAFLUOROPROPANE (R-245fa) |
GB2318350A (en) * | 1996-10-18 | 1998-04-22 | Atochem Elf Sa | Purification of hydrochlorofluoroethanes |
US5944962A (en) * | 1995-10-03 | 1999-08-31 | Laroche Industries, Inc. | Process for photochlorination |
Family Cites Families (6)
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GB698127A (en) | 1951-03-14 | 1953-10-07 | Ici Ltd | Improvements in or relating to the production of tetrafluorodichloroethane |
JPS5013179B2 (de) | 1972-08-31 | 1975-05-17 | ||
EP0143864B1 (de) | 1983-12-01 | 1987-04-22 | The Dow Chemical Company | Verfahren zur Herstellung von 1,1,2-Trichlor-2,2-difluoräthan |
US4948479A (en) * | 1989-06-07 | 1990-08-14 | Atochem North America, Inc. | Removal of unsaturated carbon compounds from 1,1-dichloro-1-fluoroethane |
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JPH08198783A (ja) * | 1995-01-18 | 1996-08-06 | Central Glass Co Ltd | 1,1,1,3,3−ペンタフルオロブタンの製造方法 |
-
2000
- 2000-06-14 JP JP2001503414A patent/JP4891503B2/ja not_active Expired - Fee Related
- 2000-06-14 DK DK00947799T patent/DK1189856T3/da active
- 2000-06-14 DE DE10029283A patent/DE10029283A1/de not_active Withdrawn
- 2000-06-14 WO PCT/DE2000/001953 patent/WO2000076945A2/de active Search and Examination
- 2000-06-14 DE DE50011826T patent/DE50011826D1/de not_active Expired - Lifetime
- 2000-06-14 AU AU61483/00A patent/AU6148300A/en not_active Abandoned
- 2000-06-14 EP EP00947799A patent/EP1189856B1/de not_active Expired - Lifetime
- 2000-06-14 ES ES00947799T patent/ES2251386T3/es not_active Expired - Lifetime
- 2000-06-14 AT AT00947799T patent/ATE312065T1/de not_active IP Right Cessation
-
2001
- 2001-12-17 US US10/016,127 patent/US20020125122A1/en not_active Abandoned
-
2003
- 2003-07-28 US US10/627,755 patent/US20040016633A1/en not_active Abandoned
-
2004
- 2004-12-10 US US11/008,109 patent/US7282120B2/en not_active Expired - Fee Related
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US4060469A (en) * | 1976-12-21 | 1977-11-29 | Allied Chemical Corporation | Preparation of 1,1,1-trifluoro-2,2-dichloroethane |
EP0407989A1 (de) * | 1989-07-14 | 1991-01-16 | Hoechst Aktiengesellschaft | Verfahren zur Herstellung von 1,1,1-Trifluor-2,2-dichlorethan durch Photochlorierung |
WO1993012058A1 (en) * | 1991-12-18 | 1993-06-24 | Allied-Signal Inc. | Process for removing 2-chloro-1,1-difluoroethylene from 1,1,1,2-tetrafluoroethane and co-producing 2-chloro-1,1,1,2-tetrafluoroethane |
US5421971A (en) * | 1993-09-03 | 1995-06-06 | Alliedsignal Inc. | Hydrochlorofluorocarbons and hydrofluorocarbons and methods for producing the same |
US5944962A (en) * | 1995-10-03 | 1999-08-31 | Laroche Industries, Inc. | Process for photochlorination |
WO1997037955A1 (en) * | 1996-04-04 | 1997-10-16 | Alliedsignal Inc. | PURIFICATION OF 1,1,1,3,3-PENTAFLUOROPROPANE (R-245fa) |
GB2318350A (en) * | 1996-10-18 | 1998-04-22 | Atochem Elf Sa | Purification of hydrochlorofluoroethanes |
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Title |
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DATABASE WPI Section Ch, Week 199719 Derwent Publications Ltd., London, GB; Class E16, AN 1997-203978 XP002154532 & CN 1 097 189 A (ZHEJIANG PROV CHEM ACAD) , 11. Januar 1995 (1995-01-11) * |
K.L. M]LLER ET AL: "Die photochemischen Chlorierungen von cis-Dichlor{thylen zu Tetrachlor{than und von Trichlor{thylen zu Pentachlor{than" Z.PHYS.CHEM.ABT.B, Bd. 35, 1937, Seiten 455-462, XP000972376 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3613722A1 (de) | 2018-07-30 | 2020-02-26 | Fujian Yongjing Technology Co., Ltd. | Neues verfahren zur herstellung von 2,2-dichlor-1,1,1-trifluorethan (hcfc-123) und/oder hcfc-122 (1,1,2-trichlor-2,2-difluorethan) |
US10633310B2 (en) | 2018-07-30 | 2020-04-28 | Fujian Yongjing Technology Co., Ltd | Process for the manufacture of 2,2-dichloro-1,1,1-trifluoroethane (HCFC-123) and/or HCFC-122 (1,1,2-Trichloro-2,2-difluoroethane) |
EP3650437A1 (de) | 2018-11-08 | 2020-05-13 | Fujian Yongjing Technology Co., Ltd. | Neues verfahren zur herstellung von 1,1,1-trifluor-2-chlorethan (hcfc-133a) und/oder trifluorethylamin (tfea) |
US11046637B2 (en) | 2018-11-08 | 2021-06-29 | Fujian Yongjing Technology Co., Ltd. | Process for the manufacture of 1,1,1-trifluoro-2-chloroethaneand/or trifluoroethylamine |
Also Published As
Publication number | Publication date |
---|---|
DK1189856T3 (da) | 2006-04-18 |
US20050101811A1 (en) | 2005-05-12 |
AU6148300A (en) | 2001-01-02 |
DE50011826D1 (de) | 2006-01-12 |
WO2000076945A3 (de) | 2001-05-31 |
JP2003502298A (ja) | 2003-01-21 |
US20020125122A1 (en) | 2002-09-12 |
DE10029283A1 (de) | 2000-12-21 |
ATE312065T1 (de) | 2005-12-15 |
ES2251386T3 (es) | 2006-05-01 |
EP1189856A2 (de) | 2002-03-27 |
US20040016633A1 (en) | 2004-01-29 |
JP4891503B2 (ja) | 2012-03-07 |
EP1189856B1 (de) | 2005-12-07 |
US7282120B2 (en) | 2007-10-16 |
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