СПОСОБЫ ПОЛУЧЕНИЯ 2-ХЛОР-1,1,1,2,3,3,3-ГЕПТАФТОРПРОПАНА, ГЕКСАФТОРПРОПЕНА И 1,1,1,2,3,3,3-ГЕПТАФТОРПРОПАНА

Изобретение относится к способу получения 2-хлор-1,1,1,2,3,3,3-гептафторпропана, который включает (а) контактирование смеси, содержащей фтороводород, хлор и, по меньшей мере, одно исходное вещество, выбранное из группы, состоящей из галогенпропенов формулы СХ3CCl=СХ2 и галогенпропанов формулы CX3CClYCX3, где каждый X независимо представляет F или Cl и Y представляет Н, Cl и F (при условии, что число X и Y, которые являются F, в целом не более шести) с катализатором хлорфторирования в зоне реакции с получением продукта в виде смеси, содержащей CF3CClFCF3, HCl, HF и недостаточно фторированные галогенированные углеводородные промежуточные соединения и (b) разделение полученного продукта с выделение CF3CClFCF3. Указанный катализатор хлорфторирования, содержащий, по меньшей мере, один содержащий хром компонент, выбранный из (i) кристаллического альфа-оксида хрома, где, по меньшей мере, 0,05 атом.% атомов хрома в кристаллической решетке альфа-оксида хрома заменено на никель, трехвалентный кобальт ...

ПОЛУЧЕНИЕ ФТОРСОДЕРЖАЩИХ СОЕДИНЕНИЙ

Изобретение относится к усовершенствованному способу получения фторсодержащих соединений из галогенсодержащих, предпочтительно хлорсодержащих, соединений за счет обмена галогена на фтор в присутствии HF-аддукта моно- или бициклического амина с по меньшей мере двумя атомами азота, при этом по меньшей мере один атом азота встроен в циклическую систему в качестве фторирующего агента, либо в присутствии фтористого водорода в качестве фторирующего агента и указанного HF-аддукта моно- или бициклического амина в качестве катализатора. При использовании соответствующих растворителей реакционные смеси можно разделять на две фазы и таким образом упрощать переработку продуктов. Изобретение также относится к HF-аддуктам 1, 5-диазабицикло[4.3.0]нон-5-ена и N,N-диалкиламинопиридина, где алкил представляет собой С1-С4алкил и где молярное соотношение HF к амину равно 1:1 и к HF-аддуктам 1, 8-диазабицикло[5.4.0]ундец-7-ена, где молярное соотношение HF к амину составляет более 1:1. 2 н. и 15 з.п. ф-лы.

СПОСОБ СИНТЕЗА ГИДРОФТОРАЛКАНА

Изобретение относится к способу синтеза гидрофторалкана, в котором по меньшей мере один хлорсодержащий или хлор- и фторсодержащий предшественник гидрофторалкана, имеющий атомное отношение F/Cl менее 1, вводят в реакцию в жидкой фазе с фтористым водородом в жидкой среде, причем в указанной среде постоянно поддерживается весовое содержание, большее или равное 50% фторсодержащих или хлор- и фторсодержащих органических соединений, имеющих среднее атомное отношение F/Cl по меньшей мере 1. Технический результат - повышение выхода продукта. 10 з.п.ф-лы, 4 ил., 1 табл.

СПОСОБ ПОЛУЧЕНИЯ 2,3,3,3-ТЕТРАФТОРПРОПЕНА

Изобретение относится к вариантам способа получения 2,3,3,3-тетрафторпропена. Один из вариантов включает в себя следующие стадии: (а) каталитическую реакцию 1,1,1,2,3-пентахлорпропана и/или 1,1,2,2,3-пентахлорпропана с HF с образованием продукта 2-хлор-3,3,3-трифторпропена; (b) каталитическую реакцию полученного таким образом 2-хлор-3,3,3-трифторпропена до 2,3,3,3-тетрафторпропена; где стадию (a) проводят в жидкой фазе; и где температура процесса на стадии (b) выше, чем температура процесса на стадии (a), по меньшей мере, на 30°C. Использование настоящего способа позволяет получать желаемый продукт со значительной селективностью. 2 н. и 13 з.п. ф-лы, 15 пр., 1 табл., 4 ил.

СПОСОБ ФТОРИРОВАНИЯ НИЗШИХ АЛИФАТИЧЕСКИХ ФТОРУГЛЕВОДОРОДОВ

Использование: в качестве хладагента, распыляющего агента, реактивного топлива. Реагент 1 низший алифатический фторуглеводород. Реагент 2 фтористый водород. Условия синтеза: катализатор фторирования - частично фторированный оксид хрома, содержащий металлсодержащую добавку рутений или платину, 290 380°С. Катализатор обладает высокой производительностью и высоким сроком службы. 5 з.п. ф-лы.

ПОЛУЧЕНИЕ ФТОРСОДЕРЖАЩИХ СОЕДИНЕНИЙ

... 1. Способ получения фторсодержащих соединений из галогенсодержащих, предпочтительно хлорсодержащих, соединений за счет обмена галогена на фтор или путем присоединения HF по многократным углерод-углеродным связям в присутствии HF-аддукта моно- или бициклического амина с по меньшей мере двумя атомами азота, при этом по меньшей мере один атом азота встроен в циклическую систему, в качестве катализатора или фторирующего агента. 2. Способ по п.1, в котором используют HF-аддукт моно- или бициклического соединения с двумя атомами азота, при этом один либо оба этих атома азота встроены в циклическую систему. 3. Способ по п.1 или 2, отличающийся тем, что в качестве моно- или бициклического соединения используют соединение, выбранное из группы, включающей аминозамещенные пиридины и бициклические амины. 4. Способ по п.3, отличающийся тем, что моно- или бициклическое соединение выбрано из группы, включающей диазобициклононан, диазобициклоундекан и диалкиламинопиридин. 5. Способ по п.1, отличающийся ...

СПОСОБ ПОЛУЧЕНИЯ 1,1,1,2-ТЕТРАФТОРЭТАНА

Использование: 1,1,1,2-тетрафторэтан используется как растворитель, хладагент, не разрушающий озоновый слой атмосферы. 1,1,1,2-тетрафторэтан получают из трихлорэтилена с помощью двухступенчатого способа, включающего взаимодействие трихлорэтилена с фтористым водородом в первом реакторе с образованием 1,1,1-трифтор-2-хлорэтана и его взаимодействие с фтористым водородом в другом реакторе с образованием 1,1,1,2-тетрафторэтана. 9 з. п. ф-лы, 2 табл.

ПРОЦЕСС ПОЛУЧЕНИЯ 2-ХЛОР-3, 3, 3-ТРИФТОРПРОПЕНА (HCFO 1233XF) ФТОРИРОВАНИЕМ ПЕНТАХЛОРПРОПАНА В ЖИДКОЙ ФАЗЕ

... 1. Способ каталитического фторирования в жидкой фазе продукта 1,1,1,2,3-пентахлорпропана и/или 1,1,2,2,3-пентахлорпропана в продукт 2-хлор-3,3,3-трифторпропен в присутствии катализатора.2. Способ по п.1, который осуществляют в органической среде.3. Способ по любому из пп.1 и 2, который осуществляют в присутствии растворителя.4. Способ по п.3, в котором растворитель присутствует в количестве, необходимом для обеспечения степени разбавления, по меньшей мере, 20%, предпочтительно от 20% до 80%, преимущественно от 40% до 60%.5. Способ по п.3, в котором растворитель выбирают из 1,2-дихлорэтана, 1,2,3-трихлорпропана, 1-хлор-1-фторэтана, 1,1-дифторэтана, 1,1-дихлорэтана и 1,3-дихлор-1-фторбутана, изомеров тетрахлорфторпропана, изомеров трихлордифторпропана и изомеров дихлортрифторпропана, 1,1,1,3,3-пентафторбутана и 1,1,2-трихлор-2,2-дифторэтана, нитрованных растворителей, включая нитрометан и нитробензол, сульфонов, включая тетраметиленсульфон и диметилсульфон, 1,1,2-трихлор-2-фторэтан или перхлорэтилен ...

СПОСОБ ПОЛУЧЕНИЯ 1,1,1-ТРИФТОР-2,3-ДИХЛОРПРОПАНА

... 1. Способ получения 1,1,1-трифтор-2,3-дихлорпропана (243db), включающий контактирование 3,3,3-трифторпропена (1243zf) с хлором в присутствии катализатора, включающего активированный уголь, оксид алюминия и/или оксид переходного металла. ! 2. Способ по п.1, который проводят при температуре от примерно -100 до примерно 400°С и давлении от 0 до примерно 3000 кПа. ! 3. Способ по п.1, где молярное отношение 1243zf: хлор составляет от примерно 10:1 до примерно 1:5. ! 4. Способ по п.1, где катализатор включает активированный уголь. ! 5. Способ по п.1, включающий стадию (b) конверсии 1,1,1,3-тетрахлорпропена с образованием 3,3,3-тетрафторпропена (1243zf). ! 6. Способ по п.5, включающий стадию (а) теломеризации этилена и четыреххлористого углерода (CCl4) с образованием 1,1,1,3-тетрахлорпропена. ! 7. Способ получения 1,1,1-трифтор-2,3-дихлорпропана (243db), включающий ! (a) теломеризацию этилена и четыреххлористого углерода (CCl4) с образованием 1,1',1,3-тетрахлорпропана; ! (b) конверсию 1,1,1,3- ...

КАТАЛИТИЧЕСКОЕ ГАЗОФАЗНОЕ ФТОРИРОВАНИЕ

... 1. Способ фторирования, который содержит:- стадию активации, содержащую контактирование катализатора фторирования с потоком газа, содержащего окислитель, в течение, по меньшей мере, одного часа; и- по меньшей мере, одну реакционную стадию, содержащую взаимодействие хлорированного соединения с фторидом водорода в газовой фазе в присутствии катализатора фторирования с тем, чтобы получить фторированное соединение.2. Способ по п. 1, который содержит множество реакционных стадий, чередующихся с множеством стадий регенерации, в котором реакционные стадии содержат взаимодействие хлорированного соединения с фторидом водорода в газовой фазе в присутствии катализатора фторирования, и стадии регенерации содержат контактирование катализатора фторирования с потоком газа, содержащим окислитель.3. Способ по любому одному из пп. 1 или 2, в котором потоком газа, содержащим окислитель, стадии активации и/или стадий регенерации является кислородсодержащий газовый поток.4. Способ по любому одному из пп. 1 ...

CПOCOБ ПOЛУЧEHИЯ 1,1,1,2-TETPAФTOPЭTAHA

CПOCOБ ПOЛУЧEHИЯ 1,1,1,2-TETPAФTOPЭTAHA

Способ получения перфторалкилйодида

HERSTELLUNG VON FLUORENTHALTENDEN DIHALOMETHANEN UND AZEOTROPEN CHLORENTHALTENDEN DIHALOMETHANEN MIT HF

VERFAHREN ZUR HERSTELLUNG VON 1,1,1,2,2-PENTAFLUOROETHAN, VERFAHREN ZUR HERSTELLUNG VON 2,2-DICHLORO-1,1,1-TRIFLUOROETHAN UND VERFAHREN ZUR REINIGUNG VON 1,1,1,2,2-PENTAFLUOROETHAN

VERFAHREN ZUR HERSTELLUNG EINES 2,2-DIFLUORPROPANS

PROCESS FOR THE PREPARATION OF TRIFLUOROMETHYL BENZENES FROM THE CORRESPONDING TRICHLORO OR TRIBROMO METHYL BENZENES

Ofen zur Durchfuehrung katalytischer Reaktionen

Verfahren zur Herstellung von 1,1,1-Trifluorchlorethan und 1,1,1,2-Tetrafluorethan

Verfahren zur Herstellung von 1,1,1,2-Tetrafluorethan.

Auf Aluminiumfluorid basierender Katalysator fuer die Fluorierung von Kohlenwasserstoffen in der Gasphase

VERFAHREN ZUR HERSTELLUNG VON 1,1,1,3,3-PENTAFLUORPROPAN

VERFAHREN ZUR HERSTELLUNG VON FLUORIERTEN KOHLENWASSERSTOFFEN

Verfahren zum Halogen-Fluor-Austausch in organischen Verbindungen und Katalysatoren hierzu.

Verfahren zur Herstellung von Tetrafluoraethylen

VERFAHREN ZUR HERSTELLUNG VON 1,1,1,2,2-PENTAFLUOROETHAN

Verfahren zur geometrischen Isomerisation halogenierter Olefine

Verfahren zur Herstellung von fluorierten organischen Verbindungen, bei dem man mindestens eine Verbindung der Formel (I) in mindestens eine Verbindung der Formel (II) umwandelt, wobei X, Y und Z jeweils unabhängig für H, F, Cl, I oder Br stehen und m jeweils für 1, 2 oder 3 steht und n für 0 oder 1 steht.

Verfahren zur Herstellung fluorhaltiger aliphatischer Verbindungen

Production of difluoromethane

Improvements in or relating to the manufacture of fluorine derivatives of aliphatic hydrocarbons

The vapour of a saturated halogen derivative of an aliphatic hydrocarbon containing not more than three carbon atoms and at least one halogen atom other than fluorine is reacted with hydrogen fluoride in the presence of a chromium halide to form a fluoro-derivative of the hydrocarbon. A temperature of 350--550 DEG C. is suitable. Initial materials specified are CCl4, CHCl3, CFCl3, and C2H2Cl4. Using CCl4 temperatures of 400-550 DEG C. and contact times of 15--25 secs. are satisfactory. The catalyst may be chromic chloride or fluoride, with or without the oxide, supported on carbon. The hydrocarbon halide is preferably in excess although for highly fluorinated derivatives a large proportion of hydrogen fluoride may be necessary. A mixture of fluoro-derivatives is normally obtained which can be separated, unchanged halide and any fluoro-derivatives containing less than the desired proportion of fluorine being returned to the reaction. In examples: (1) vapours obtained by bubbling hydrogen ...

Catalyst for fluorination of 1,1,1-trifluoro-2, 2-dichloroethane and method for preparing the same

A catalyst for the fluorination of 1,1,1-trifluoro-2,2-dichloroethane comprises chromium, a compound of Mg or Ca, and at least one metal component selected from Zn, Ce and Ni, with the molar ratio of Cr to Mg or Ca ranging from 1:1 to 1:32 and the molar ratio Cr to the metal component being not more than 1:0.5, and a method for preparing the catalyst comprising the steps of producing an admixture of a composition comprising chromium, magnesium fluoride or calcium fluoride, and at least one metal compound selected from cerium fluoride, zinc fluoride and nickel fluoride with water, and refluxing the admixture in methanol or ethanol.

A process for the preparation of 1, 1, 1, 2-tetrafluoroethane

The invention relates to a process for preparing a co-precipitated Cr2O3/A12O3 catalyst promoted by zinc, said process comprising co-precipitation of chromium and aluminum metal hydroxides from corresponding trivalent metal salt solutions using NH4OH, NaOH or KOH as a base and followed by calcination to give mixed oxide precatalyst in amorphous form which is impregnated with an activity promoting amount of Zinc compound. The catalyst is used for the preparation of HFL-134a by fluorination of trichloroethylene and fluorination of the intermediate product of the former reaction (HCFC-133A).

Improvements in and relating to fluorination

Vinyl fluoride and 1,1-difluoroethane are obtained by passing a mixture of ethylene dichloride or vinyl chloride or both and hydrogen fluoride over a chromium oxide catalyst at 200 DEG to 500 DEG C. From 2 to 20 moles of hydrogen fluoride may be used per mole of ethylene dichloride and/or vinyl chloride. Vinyl chloride and 1,1-difluoroethane may be separated from the reaction product and recycled. The catalyst may be granular or shaped hydrous chromium oxide, or co-precipitated chromium oxide and alumina, or chromium oxide on an alumina support. Examples are given.

Catalytic fluorination of organic compounds

Fluorinated and/or fluorochlorinated aliphatic hydrocarbons are prepared by passing a chlorinated aliphatic hydrocarbon with gaseous hydrofluoric acid and, optionally, chlorine at a temperature of 100 DEG to 500 DEG C. over a catalyst containing thorium fluoride. An inert gas may also be present. The catalyst may be supported, e.g. on active carbon, and may be combined with aluminium and/or chromium fluoride and, optionally, with one or more oxides or basic fluorides of aluminium, chromium or thorium. Examples are given.ALSO:A catalyst for the fluorination of chlorinated aliphatic hydrocarbons (see Division C2) comprises thorium fluoride which may be supported on an inert support such as active carbon or may be combined with fluorides of aluminium or chromium and/or one or more oxides or basic fluorides of metals such as chromium, aluminium and thorium. Various methods of preparation are described. The catalyst may be re-activated by heating at a temperature below 600 DEG C. in a light ...

Process

Process

Manufacture of methane derivatives containing chlorine and fluorine

Fluorochloromethanes are obtained by causing hydrogen fluoride to react on carbon tetrachloride in the gaseous phase and, if desired, under increased pressure, in the presence of a mixture of antimony trichloride and antimony pentachloride. The mixture of chlorides may be used directly in a fused state or deposited on a carrier such as coke. According to an example, a mixture of antimony trichloride and antimony pentachloride is maintained at a temperature of 100-130 DEG C. in a copper vessel, while a mixture of hydrogen fluoride, carbon tetrachloride, and a little chlorine is passed in continuously. The exit gases, containing hydrogen chloride, carbon tetrachloride, fluorochloromethanes, and small quantities of antimony chlorides are first washed in a scrubber with carbon tetrachloride, the liquid obtained being returned to the reaction vessel, then passed through a water scrubber, and are finally condensed at about -30 DEG C. The condensate on fractionation yields fluorotrichloromethane ...

FLUORINATION CATALYST AND PROCESS

TRICHLOROMETHYL-TRIFLUOROMETHYL-BENZENES

... 1510280 Preparation of trichloromethyl trifluoromethylbenzenes BAYER AG 13 Oct 1976 [3 Nov 1975 14 April 1976] 42546/76 Heading C2C The invention comprises a process for the preparation of a compound of Formula I wherein R1 and R2 are independently H, F or Cl by reacting a compound of Formula II wherein m and n are independently 0 or integers from 1 to 3 with a halogen transfer catalyst. During the reaction described above corresponding bis(trichloromethyl)benzenes and compounds having one or two mixed fluorochloromethyl groups are also produced as byproducts. Mixtures of isomers having the general Formula II above are prepared by reacting the corresponding bis(trichloromethyl)benzene with anhydrous HF and where desired specific isomers, e.g. 1-trifluoromethyl-3-difluorochloromethyl - benzene,1 - difluorochloromethyl - 3- fluorodichloromethylbenzene, 1, 4 - bis(difluorochloromethyl)benzene,1,4 - bis(fluorodichloromethyl)benzene,1,4 - bis(trifluoromethyl)benzene,2,5- bis ...

A process for the manufacture of aliphatic fluorine compounds

Aliphatic fluorine compounds are prepared by reacting a halogenated aliphatic hydrocarbon which contains at least one halogen atom, other than fluorine, with hydrogen fluoride in the presence of an antimony compound and metallic aluminium. Suitable catalysts are antimonous halides in the presence of chlorine or antimonic halides. The reaction may be conveniently carried out in an aluminium vessel which is found to accelerate the reaction rate and also to be corroded less easily than steel or copper vessels. The reaction may also be activated by the addition of 0,1 to 10% of an arsenic halide e.g. the trichloride or trifluoride based on the weight of the antimony compound. In examples (1) trifluorodichloroethane and difluorotrichloroethane are prepared from pentachlaroethane (2) (3) tetrafluorodichloroethane and trifluorotrichloroethane are prepared from hexachloroethane, (4) methylene difluoride is prepared from methylene dichloride. (5) 1:1:1-trifluoroethyl chloride is prepared from trichlorethylene ...

Process for the preparation of tetrafluoroethane

... 1,2,2,2-Tetrafluoroethane is prepared by reacting 1-chloro-2,2,2- trifluoroethane with excess of hydrogen fluoride in the presence of an inorganic chromium (iii) compound as a catalyst. Addition of oxygen to the reaction system prevents the deterioration of the activity of the catalyst and assures a high yield of 1,2,2,2-tetrafluoroethane even after a long time run.

MANUFACTURE OF 1,1,1,2-TETRAFLUOROETHANE HALOGENATED COMPOUNDS

Activation of chromic fluoride catalyst

A process for activating chromic fluoride halogen-exchange catalyst, comprising contacting the catalyst with hydrogen chloride and then chlorine, or, hydrogen chloride and chlorine, simultaneously, and contacting the intermediate chloride-containing compound thus formed with hydrogen fluoride to complete the activation.

M-BROMO-BENZOTRIFLUORIDES

LIQUID PHASE PROCEDURE FOR THE PRODUCTION OF HCFC 123

PROCEDURE FOR THE PRODUCTION OF BROMINE (CHLORINE) - FLUORINE ALKANES

WITH FLUORINE POLYMER LINED REACTOR

PROCEDURE FOR THE PRODUCTION OF 1,1,1,2 - TETRAFLUORETHAN

PROCEDURE FOR THE PRODUCTION OF PENTAFLUORETHAN (R 125).

PROCEDURE FOR the PRODUCTION OF 1,1,1CHLORDIFLUORETHAN.

PROCEDURE FOR THE HYDRAULIC FLUORIDATION OF ALKANES WITH THE HELP OF THE TAX5-KATALYSATOREN.

PROCEDURE FOR the PRODUCTION OF 1,1,1-TRIFLUORETHAN

PROCEDURE FOR THE PRODUCTION OF PENTAFLUORETHAN

PROCEDURE FOR FLUORIDATE

PRODUCTION OF FLUOROCARBONS

PROCEDURE FOR THE PRODUCTION OF HYDROCARBONS FLUORIDATED ON AT LEAST ONE CARBON ATOM IN AN ALKYL CHAIN

PROCEDURE FOR the SEPARATION OF HYDROGEN FLUORIDE FROM ITS MIXTURES WITH 1,1,1,3,3-PENTAFLUORBUTAN AND PROCEDURE FOR the PRODUCTION OF PENTAFLUORBUTAN

PROCEDURE FOR THE PRODUCTION OF DIFLUOROMETHAN

Process for the manufacture of 1,1,1,2-tetrafluoroethane

PREPARATION OF 1,1,1,2-TETRAFLUOROETHANE BY GAS-PHASE REACTION OF 1,1,1-TRIFLUOROCHLOROETHANE WITH HYDROGEN FLUORIDE

Collection assembly

PROCESS FOR THE MANUFACTURE OF 1,1,1,2-TETRAFLUOROETHANE

CHROMIUM OXIDE CATALYST FOR GAS PHASE FLUORIDATION

CHROMIUM SULPHATE CATALYST FOR GAS PHASE FLUORIDATION

Gas phase catalytic fluorination of halogenated hydrocarbons

Method for preparing a halogenated olefin

Process for the manufacture of 1,1,1,3,3-pentafluoropropane

Process for producing 1,1,1,3,3-pentafluoropropane

Process for producing difluoromethane

ALUMINIUM PHOSPHATE AND CHROMIUM CATALYST FOR GAS PHASE FLUORIDATION

FLUORINATION CATALYST AND PROCESS

Process for production of 1,1,1,3,3,3-hexafluoropropane

MANUFACTURE OF 1,1,1,2-TETRAFLUOROETHANE

HALOCARBON PRODUCTION PROCESSES, HALOCARBON SEPARATION PROCESSES, AND HALOCARBON PRODUCTION SYSTEMS

MANUFACTURE OF HALOGENATED COMPOUNDS

METHOD FOR SEPARATING A MIXTURE COMPRISING AT LEAST AN HYDROFLUOROALKANE AND HYDROGEN FLUORIDE, METHODS FOR PREPARING A HYDROFLUOROALKANE AND AZEOTROPIC COMPOSITIONS

Procédé de séparation d'un mélange comprenant au moins un hydrofluoroalcane et du fluorure d'hydrogène, selon lequel on fait réagir un mélange hydrofluoroalcane/fluorure d'hydrogène avec au moins un précurseur chloré ou chlorofluoré de l'hydrofluoroalcane. Procédé de préparation d'un hydrofluoroalcane comprenant une telle séparation, combinée à une étape réactionnelle catalytique. Compositions azéotropiques.

PROCESS FOR THE MANUFACTURE OF HYDROFLUOROOLEFINS

The invention relates to a process for manufacturing 1,1,1,2-tetrafluoropropene (1234yf, CF3-CF=CH2) from 1,1,3,3- tetrachlororopropene (1230za, CCl2=CH-CHCl2) and/or 1,1,1,3,3-pentachloropropane (240fa, CCl3CH2CHCl2). The process comprises an isomerization step of 1-chloro- 3,3,3 trifluoropropene (1233zd, CF3-CH=CHCl) to 2-chloro- 3,3,3 trifluoropropene (1233xf or CF3-CCl=CH2).

MANUFACTURE OF HALOGENATED COMPOUNDS

... 1,1,1,2-tetrafluoroethane is prepared by reacting 1,1,1-trifluoro-2-chloroethane with hydrogen fluoride in the vapour phase in the presence of a chromium oxide catalyst. The method permits high selectivities to be obtained for the desired tetrafluoroethane.

PROCESS FOR SYNTHESIZING CHLOROPENTAFLUOROETHANE FROM DICHLOROTETRAFLUOROETHANE AND HYDROFLUORIC ACID

L'invention a pour objet un procédé de fabrication en phase gazeuse du chloropentafluoroéthane, par action de l'acide fluorhydrique sur le dichlorotétrafluoroéthane en présence d'un catalyseur, ledit catalyseur étant préparé en faisant réagir en phase gazeuse une alumine dont la teneur en oxyde de sodium est inférieure à 300 ppm et dont le volume des pores de rayon de 40 Angstr?ms et plus est supérieur à 0,7 cm3/g avec de l'acide fluorhydrique ou avec un mélange d'acide fluorhydrique et d'air, d'azote ou d'un composé fluoré. Ce procédé selon l'invention a l'avantage d'être simple, souple et économique.

CHROME OXIDE MICROBALLOONS CATALYSTS USED FOR THE FLUORINATION OF ALIPHATIC CHLORINATED DERIVATIVES IN THE GASEOUS PHASE, AND FLUORINATION PROCESSES UTILISING THESE CATALYSTS

Catalyseurs de fluoruration en phase gazeuse des dérivés chlorés aliphatiques constitués de microbilles d'oxyde de chrome amorphe, obtenues par un procédé L'invention vise également un procédé de fluoruration en phase gazeuse des dérivés chlorés aliphatiques utilisant ces catalyseurs dans des réacteurs à lit fluidisé.

CATALYZED HYDROFLUORINATION OF HALOGENATED ALKANES

Catalyzed Hydrofluorination of Halogenated Alkanes Process for the preparation of fluorinated alkanes by contacting halogenated alkanes with HF in the presence of TaCl5 or TaBr5.

PROCESSES FOR SYNTHESIS OF 1,3,3,3-TETRAFLUOROPROPENE AND 2,3,3,3-TETRAFLUOROPROPENE

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. In another embodiment, the process comprises (a) reacting chlorine with a compound of formula (I) CH3CH=CH2 to produce a reaction product comprising a compound of formula (II) CCI3CHC1CH2C1; (b) fluorinating the ...

MANUFACTURE OF HALOHYDROCARBONS

PROCESSES FOR PRODUCING TRIFLUOROIODOMETHANE AND TRIFLUOROACETYL IODIDE

The present disclosure provides a process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and at least one trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, reacting the reactant stream in the presence of a first catalyst at a first reaction temperature from about 25 °C to about 400 °C to produce an intermediate product stream comprising trifluoroacetyl iodide, and reacting the intermediate product stream in the presence of a second catalyst at a second reaction temperature from about 200 °C to about 600 °C to produce a final product stream comprising the trifluoroiodomethane.

COMPOSITIONS COMPRISING 2,3-DICHLORO-1,1,1-TRIFLUOROPROPANE, 2-CHLORO-1,1,1-TRIFLUOROPROPENE, 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE OR 2,3,3,3-TETRAFLUOROPROPENE

COMPOSITIONS COMPRISING 2,3-DICHLORO-1,1,1-TRIFLUOROPROPANE, 2-CHLORO-1,1,1-TRIFLUOROPROPENE, 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE OR 2,3,3,3-TETRAFLUOROPROPENE

... ²Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, ²HCFC-244db and/or HFO-1234yf and at least one additional compound. For the ²composition ²comprising 1234yr, the additional compound is selected from the group ²consisting of ²HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, ²HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243fa, ethylene, ²HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, ²HFO-1336, HCFC-133a, HCFC-254fb, HCFC-1131, HFO-1141, HCFO-1242zf, ²HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising ²HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make ²HFO-1234yt. Compositions comprising HFO-1234yf are useful, among other uses, ²as heat ²transfer compositions for use in refrigeration, air-conditioning and heat pump ²systems.² ...

LIQUID PHASE FLUORINATION PROCESS

PROCESS FOR THE PREPARATION OF 1,1,1,3,3-PENTAFLUOROPROPANE AND 1,1,1,3,3,3-HEXAFLUOROPROPANE

... ²²²A process for the manufacture of CF3CH2CHF2 and CF3CH2CF3 is disclosed. The ²process involves (a) reacting HF and at least one halopropene of the formula ²CX3CCl=CClX (where each X is independently F or Cl) to produce a product ²including both CF3CCl=CF2 and CF3CHClCF3; (b) reacting CF3CCl=CF2 and ²CF3CHClCF3 produced in (a) with hydrogen to produce a product including both ²CF3CH2CHF2 and CF3CH2CF3; and (c) recovering CF3CH2CHF2 and CF3CH2CF3 from the ²product produced in (b). In (a), the CF3CCl=CF2 and CF3CHClCF3 are produced in ²the presence of a fluorination catalyst including a ZnCr2O4/crystalline ².alpha.-chromium oxide composition, a ZnCr2O4/crystalline .alpha.-chromium ²oxide composition which has been treated with a fluorinating agent, a zinc ²halide/.alpha.-chromium oxide composition and/or a zinc halide/.alpha.-²chromium oxide composition which has been treated with a fluorinating agent.² ...

INTEGRATED PROCESS FOR MAKING HCFO-1233ZD AND HFC-245FA

A process is described wherein otherwise unusable by-products from a process for the manufacture of trans HCFO-1233zd(E) are converted to a valuable product by introducing them into a process for the production of HFC-245fa. The process includes the catalytic hydrofluorination of a reaction mixture comprising the HCFO-1233zd production by-products.

METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS

Disclosed is a method for producing a fluorinated organic compound of formula (II): CF3CF=CH2 (II), also known as HFO-1234yf. The method typically comprises converting a compound of Formula (IB): CF3CFC1CH3 (IB), also known as HCFC-244bb, wherein the converting step comprises a gas phase reaction of HCFC-244bb inside a reactor. The reaction occurs at a reaction temperature of from 200 C to 800 C. Preferably, the method comprises a pre-heating step before injecting a stream of gas phase HCFC-244bb into the vessel. Preferably, the method is a direct conversion of HCFC-244bb into HFO-1234yf.

PROCESS

The invention provides a process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf) comprising (a) contacting 1,1,1-trifluoro-2,3-difluoropropane (243db) with hydrogen fluoride (HF) in the presence of a zinc/chromia catalyst to produce a compound having the formula CF3CHFCH2X, wherein X is Cl or F, and (b) dehydrohalogenating the compound of formula CF3CHFCH2X to produce 1234yf.

INTEGRATED PROCESS FOR THE PRODUCTION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE

The present invention is directed to processes for the production of 1233zd from 240fa and HF, with or without a catalyst, at a commercial scale. The 240fa and HF are fed to a reactor operating at high pressure. The resulting product stream comprising 1233zd, HCl, HF, and other byproducts is treated to one or more purification techniques including phase separation and one or more distillations to provide purified 1233zd, which meets commercial product specifications, i.e., having a GC purity of 99.5% or greater.

PROCESS FOR THE PREPARATION OF TETRAFLUORO-1,1,1,2-ETHANE

L'invention concerne la fabrication du tétrafluoro-1,1,1,2 éthane (134a) par fluoration catalytique du chloro-1-trifluoro-2,2,2-éthane (F133a) en phase gazeuse. On utilise un catalyseur mixte composé d'oxydes, halogénures et/ou oxyhalogénures de nickel et de chrome déposés sur un support constitué de fluorure d'aluminium ou d'un mélange de fluorure d'aluminium et d'alumine. Le catalyseur est préalablement activé par séchage et par fluoration au moyen d'acide fluorhydrique. Ce catalyseur mixte permet d'obtenir une excellente sélectivité en F134a avec une productivité élevée.

Collection Assembly

PRODUCTION OF TETRAFLUOROETHANES

... 2115430 9325506 PCTABS00028 A process for the production of tetrafluoroethanes which comprises contacting 1,1,2,2-tetrachloroethane with hydrogen fluoride over a fluorination catalyst/agent in the liquid phase or in the vapour phase at 200 ·C to 400 ·C. 1,1,2,2-tetrafluoroethane produced by the process may be isomerised to 1,1,1,2-tetrafluoroethane. The 1,1,2,2-tetrachloroethane may be co-fed with trichloroethylene to a vapour-phase process for producing 1,1,1,2-tetrafluoroethane from trichloroethylene.

PROCESS FOR THE FLUORINATION OF PERCHLOROETHYLENE OR PENTACHLOROETHANE

L'invention concerne la fluoration catalytique du perchloréthylène ou du pentachloréthane en phase gazeuse au moyen d'acide fluorhydrique. On utilise un catalyseur mixte composé d'oxydes, d'halogénures et/ou d'oxyhalogénures de nickel et de chrome, déposés sur un support constitué de fluorure d'aluminium ou d'un mélange de fluorure d'aluminium et d'alumine, ledit catalyseur étant préalablement activé par séchage et par fluoration au moyen d'acide fluorhydrique.

PROCESS FOR THE MANUFACTURE OF 1,1,1-CHLORODIFLUOROETHANE

VAPORISATION OF LIQUIDS

Prior to carrying out a gaseous phase chemical reaction, a liquid phase organic compound which is prone to degrade is vaporised at elevated pressures with the aid of a second compound. In one embodiment of the invention, vaporisation is effected by co-vaporising a mixture of the two compounds in a vaporiser (30) (figure 2). In another embodiments (figures 5-7), the first compound (146, 148) is injected into a hot gaseous stream and undergoes atomisation into droplets which then vaporise within the gaseous stream. The second compound (160,162) is used to assist the atomisation process and/or to sweep atomised droplets of the first compound away from hot surfaces where the first compound would otherwise tend to undergo degradation if the droplets arc allowed to reside in contact with such surfaces.

PROCESS FOR THE HYDROFLUORATION OF CHLORO(FLUORO)BUTANE

Procédé pour l'hydrofluoration de chloro(fluoro) butane de formule générale C4H5C1x F5-x dans laquelle x = 1 à 5, au moyen de fluorure d'hydro- gène et en présence d'un catalyseur choisi parmi les dérivés des métaux des groupes IIIa, IVa, IVb, Va, Vb et VIb du tableau périodique des éléments. ...

Methods to produce 3,3,3-trifluoropropene

Disclosed is a process for the preparation of 3,3,3-trifluoropropene comprising the steps of; (1) fluorination of 240fa to form 245fa; (2) conversion of 245fa to a cis/trans mixture of 1234ze; (3) hydrogenation of the cis/trans mixture of 1234ze to form 254fb; and (4) dehydrofluorination of 254fb to produce 3,3,3-trifluoropropene. Alternatively or additionally, a second process for the preparation of the desired compound comprises the following steps; (1) fluorination of HCC-240fa to form HCFC-244fa; (2) conversion of 244fa to a cis/trans mixture of HFO-1234ze; (3) hydrogenation of the cis/trans mixture of 1234ze to form HFC-254fb; and (4) dehydrofluorination of 254fb to produce 3,3,3-trifluoropropene.

Process For Preparing 3,3,3-Trifluoropropene

The invention provides a process for preparing 3,3,3-trifluoropropene (1243zf), the process comprising contacting a compound of formula CX 3 CH 2 CH 2 X or CX 3 CH═CH 2 , with hydrogen fluoride (HF) in the presence of a zinc/chromia catalyst, wherein each X independently is F, Cl, Br or I, provided that in the compound of formula CX 3 CH═CH 2 , at least one X is not F.

Process

The invention provides a process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf) comprising (a) contacting 1,1,1-trifluoro-2,3-difluoropropane (243db) with hydrogen fluoride (HF) in the presence of a zinc/chromia catalyst to produce a compound having the formula CF 3 CHFCH 2 X, wherein X is Cl or F, and (b) dehydrohalogenating the

METHOD FOR PRODUCING 2-CHLORO-3,3,3,-TRIFLUOROPROPENE (HCFC-1233xf)

The present invention relates to an improved method for manufacturing 2-chloro-3,3,3,-trifluoropropene (HCFC-1233xf) by reacting 1,1,2,3-tetrachloropropene, 1,1,1,2,3-pentachloropropane, and/or 2,3,3,3-tetrachloropropene with hydrogen fluoride, in a vapor phase reaction vessel in the presence of a vapor phase fluorination catalyst and stabilizer. HCFC-1233xf is an intermediate in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf) which is a refrigerant with low global warming potential.

Process for making tetrafluoropropene

The present invention describes a process for making CF 3 CH═CHF (HFO-1234ze). The process involves the addition of carbon tetrachloride (CCl 4 ) to 1,2-dichloroethylene to form CCl 3 CHClCHCl 2 . The compound CCl 3 CHClCHCl 2 thus can then either be treated with HF to produce CF 3 CHClCHClF as the main product, or it can be converted to CCl 2 ═CHCHCl 2 (1230za) by dechlorination. CCl 2 ═CHCHCl 2 can be treated with HF such that the main product obtained is CF 3 CHClCHClF. CF 3 CH═CHCl may be produced as a by-product, but upon treatment with HF, it affords the compound CF 3 CHClCHClF. The desired compound, CF 3 CH═CHF (HFO-1234ze), is obtained as a trans/cis mixture by dehydrochlorination of CF 3 CH 2 CHClF or by dechlorination of CF 3 CHClCHClF.

Method of calibrating and correcting color-bleed factors for color separation in dna analysis

A method includes calibrating color bleed factors of optical detector channels of a sample processing apparatus through processing a color bleed calibration substance which includes a plurality of different size fragments replicated from different groups of DNA loci, wherein fragments in a same group are labeled with a same fluorescent dye, and fragments in different groups are labeled with different fluorescent dyes having different emission spectra, wherein the different size fragments are processed during different acquisition times.

Integrated process to coproduce trans-1-chloro-3,3,3-trifluoropropene, trans-1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoropropane

Disclosed is an integrated manufacturing process to co-produce (E) 1-chloro-3,3,3-trifluoropropene, (E) 1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoro-propane starting from a single starting feed material or a mixture of unsaturated hydrochloro-carbon feed materials comprising 1,1,1,3-tetrachloropropene and/or 1,1,3,3-tetrachloro-propene. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E) 1-chloro-3,3,3-trifluoro-propene (1233zd (E)) from these feed materials, which may also include 240fa. In the second liquid phase fluorination reactor 1233zd (E) is contacted with HF in the presence of catalyst to produce 1,1,1,3,3-pentafluoropropane (245fa) with high conversion and selectivity. A third reactor is used for dehydrofluorination of 245fa to produce (E) 1,3,3,3-tetrafluoro-propene (1234ze (E)) by contacting in the liquid phase with a caustic solution or in the vapor phase using a dehydrofluorination catalyst. This operation may be followed by one or more purification processes to recover the 1234ze (E) product.

PROCESS FOR THE PREPARATION OF 2,3,3,3 TETRAFLUOROPROPENE

The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene, comprising the following steps: (a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into product 2-chloro-3,3,3-trifluoropropene; (b) catalytic reaction of the thus-obtained 2-chloro-3,3,3-trifluoropropene into 2,3,3,3-tetrafluoropropene. 1. Process for preparing 2 ,3 ,3 ,3-tetrafluoropropene , comprising the steps:(a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into 2-chloro-3,3,3-trifluoropropene;(b) catalytic reaction of said 2-chloro-3,3,3-trifluoropropene into 2,3,3,3-tetrafluoropropene.2. The process of claim 1 , wherein step (b) comprises:(i) contacting 2-chloro-3,3,3-trifluoro-1-propene with hydrogen fluoride in the gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture;(ii) separating the reaction mixture into a first stream comprising HCl, 2,2,2,3-tetrafluoropropene and a second stream comprising HF, unreacted 2-chloro-3,3,3-trifluoro-1-propene 1,1,1,2,2-pentafluoropropane; and(iii) recycling at least a part of the second stream back to step (i).3. The process according to claim 2 , wherein the first stream is separated into HCl and 2 claim 2 ,2 claim 2 ,2 claim 2 ,3-tetrafluoropropene.4. The process of claim 1 , wherein step (b) comprises:(i) contacting 2-chloro-3,3,3-trifluoro-1-propene with hydrogen fluoride in the gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture comprising HCl and fluorinated products;(ii) separating the reaction mixture into HCl and a stream containing the fluorinated products;(iii) separating said stream containing the fluorinated products into a first stream comprising 2,2,2,3-tetrafluoropropene and a second stream comprising HF, unreacted 2-chloro-3,3,3-trifluoro-1-propene and 1,1,1,2,2-pentafluoropropane; and(iv) recycling at least a ...

PROCESS FOR THE MANUFACTURE OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE

The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3- pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2-chloro-3,3,3-trifluoropropene in presence of a catalyst and oxygen. 1. Process comprising the catalytic fluorination in the gas phase of 1 ,1 ,1 ,2 ,3-pentachloropropane and/or 1 ,1 ,2 ,2 ,3-pentachloropropane into 2-chloro-3 ,3 ,3-trifluoropropene in the presence of Hf , a catalyst and oxygen.2. Process according to claim 1 , wherein the ratio of oxygen with respect to 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane and/or 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,2 claim 1 ,3-pentachloropropane is 0.05 to 15 mole.3. Process according to wherein said catalyst comprises Ni—Cr claim 1 , preferably supported.4. Process according to claim 1 , wherein said catalyst is supported on a support selected from fluorinated alumina claim 1 , fluorinated chromia claim 1 , fluorinated activated carbon or graphite carbon.5. Process according to claim 1 , wherein said catalyst further comprises a co-catalyst selected from Ni claim 1 , Co claim 1 , Zn claim 1 , Mn or mixtures thereof and wherein said co-catalyst is present in an amount from about 1-10 wt % of said catalyst.6. Process according to claim 1 , wherein said catalyst is activated with a fluorine-containing compound.7. Process according to claim 1 , in which said 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane contains up to 40 mol % of 1 claim 1 ,1 claim 1 ,2 claim 1 ,2 claim 1 ,3-pentachloropropane.8. Process according to claim 1 , carried out at a pressure from 1 to 20 bars.9. Process according to claim 1 , carried out at a temperature of from 200 to 450° C.10. Process according to claim 1 , carried out with a contact time from 6 to 100 sec.11. Process according to claim 1 , carried out at a molar ratio of 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane and/or 1 claim 1 ,1 claim 1 ,2 claim 1 ,2 ...

PROCESSES FOR SELECTIVE DEHYDROHALOGENATION OF HALOGENATED ALKANES

Disclosed are processes for producing halogenated olefins, and preferably tetrafluorinated propene(s), from one or more alkanes having both fluorine substituents and non-fluorine substituents, preferably with a high degree of conversion and selectivity. Preferably the process comprises the use of a catalyzed reaction in which the catalyst is selected from the group consisting of activated carbons, halogentated mono- and di-valent metal oxides, mono- and di-valent Lewis acid metal halides, zero-valent metals, and combinations of these. 1. A process for the production fluorinated olefin having from three to six carbon atoms , the process comprising exposing a fluorinated and chlorinated alkane having from two to six carbon atoms and a degree of non-fluorine halogen substitution of N and a degree of fluorine substitution of M to conditions effective to convert at least about 20% by weight of said alkane to one or more olefins having a degree of non-fluorine halogen substitution of a N−1 and a degree of fluorine substitution of M.2. The process of wherein said fluorinated olefins has the same number of carbon atoms as said alkane.3. (canceled)4. (canceled)5. (canceled)6. (canceled)9. (canceled)10. (canceled)11. The process of wherein said exposing step comprises conditions effective to convert at least about 70% by weight of said compounds of Formula (I) to one or more compounds of Formula (II).12. The process of wherein said exposing step comprises conditions effective to convert at least about 80% by weight of said compounds of Formula (I) to one or more compounds of Formula (II).13. The process of wherein said exposing step comprises conditions effective to convert at least about 90% by weight of said compounds of Formula (I) to one or more compounds of Formula (II).14. (canceled)15. The process of wherein said fluorinated olefin having a degree of substitution of N+1 comprises hexafluorpropene.16. The process of wherein said fluorinated olefin having a degree of ...

AZEOTROPE-LIKE COMPOSITION OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFC-1233XF) AND HYDROGEN FLUORIDE (HF)

Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). 112-. (canceled)13. A method of forming an azeotropic or azeotrope-like composition which comprises forming a blend consisting essentially of from about 6.2 mole percent to about 90.7 mole percent hydrogen fluoride and from about 9.3 mole percent to about 93.8 mole percent 2-chloro-3 ,3 ,3-trifluoropropene to thereby form an azeotropic or azeotrope-like composition having a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.14. The method of wherein the composition consists of hydrogen fluoride and 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene.15. The method of wherein the hydrogen fluoride in present in an amount of from about 15 to about 50 weight percent.16. The method of wherein the 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene is present in the amount from about 50 to about 85 weight percent.17. The method of wherein the composition has a boiling point of about 0° C. at a pressure of about 15 psia; or a boiling point of from about 25° C. at a pressure of about 38 psia; or a boiling point of about 61° C. at a pressure of about 107 psia.18. The method of further comprising the step of separating 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene from an azeotropic or azeotrope-like composition of 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene and hydrogen fluoride using pressure swing distillation.19. The method of further comprising the step of feeding the azeotropic or azeotrope-like composition of 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene and hydrogen fluoride to a fluorination reactor as a source of hydrogen fluoride.20. A method for removing 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene from a mixture ...

PROCESS FOR THE REDUCTION OF RfCCX IMPURITIES IN FLUOROOLEFINS

The present disclosure relates to processes for reducing the concentration of R f C≡CX impurities in fluoroolefins. The process involves: contacting a mixture comprising at least one fluoroolefin and at least one R f C≡CX impurity with at least one amine to reduce the concentration of the at least one R f C≡CX impurity in the mixture; wherein R f is a perfluorinated alkyl group, and X is H, F, Cl, Br or I. The present disclosure also relates to processes for making at least one hydrotetrafluoropropene product selected from the group consisting of CF 3 CF═CH 2 , CF 3 CH═CHF, and mixtures thereof and reducing the concentration of CF 3 C═CH impurity generated during the process. The present disclosure also relates to processes for making at least one hydrochlorotrifluoropropene product selected from the group consisting of CF 3 CCl═CH 2 , CF 3 CH═CHCl, and mixtures thereof and reducing the concentration of CF 3 C≡CH impurity generated during the process.

PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE

The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst. 122-. (canceled)23. A process of producing 2 ,3 ,3 ,3-tetrafluoropropene comprising contacting 1 ,1 ,1 ,2 ,3-pentachloropropane and/or 1 ,1 ,2 ,2 ,3-pentachloropropane with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce 2 ,3 ,3 ,3-tetrafluoropropene.24. Process according to claim 23 , carried out in a single stage.25. Process according to claim 23 , wherein the product 2 claim 23 ,3 claim 23 ,3 claim 23 ,3-tetrafluoropropene is present at a concentration of at least 1%.26. Process of claim 23 , wherein said catalyst is a chromium catalyst.27. Process of claim 26 , wherein said catalyst further comprises a co-catalyst selected from the group consisting of Ni claim 26 , Co claim 26 , Zn claim 26 , Mn claim 26 , Mg and mixtures thereof claim 26 , and wherein said co-catalyst is present in an amount from about 1-10 wt % of said fluorination catalyst.28. Process of claim 23 , carried out in the presence of a catalyst comprising Ni—Cr.29. Process of claim 23 , wherein said catalyst is supported on a support comprising fluorinated alumina claim 23 , fluorinated chromia claim 23 , fluorinated activated carbon or graphite carbon.30. Process of claim 23 , wherein the fluorination catalyst is activated with a fluorine-containing compound.31. Process of claim 23 , in which the 1 claim 23 ,1 claim 23 ,1 claim 23 ,2 claim 23 ,3-pentachloropropane contains up to 40 mol % of isomer 1 claim 23 ,1 claim 23 ,2 claim 23 ,2 claim 23 ,3-pentachloropropane.32. Process of claim 23 , which is carried out at a pressure from 3 to 20 bars.33. Process of claim 23 , carried out at a temperature of from 200 to 450° C.34. Process of claim 23 , carried out with a contact time from 6 to 100 sec.35. Process of claim 23 , carried out with a ...

CATALYTIC GAS PHASE FLUORINATION

The present invention relates to a fluorination process, comprising: 120-. (canceled)21. A fluorination process , comprising:an activation stage comprising contacting a fluorination catalyst with an oxidizing agent-containing gas flow for at least one hour; andat least one reaction stage comprising reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of the fluorination catalyst, so as to produce a fluorinated compound.22. The process of claim 21 , further comprising a plurality of reaction stages alternating with a plurality of regeneration stages claim 21 , wherein the plurality of reaction stages comprise reacting the chlorinated compound with hydrogen fluoride in gas phase in the presence of the fluorination catalyst claim 21 , and the plurality of regeneration stages comprise contacting the fluorination catalyst with an oxidizing agent-containing gas flow.23. The process of claim 22 , wherein the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages is an oxygen-containing gas flow.24. The process of claim 22 , wherein the activation stage and/or the regeneration stages comprise contacting the fluorination catalyst with the oxidizing agent-containing gas flow for at least 2 hours.25. The process of claim 22 , wherein the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages contains hydrogen fluoride in addition to the oxidizing agent claim 22 , and wherein the proportion of oxidizing agent in the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages is preferably from 2 to 98 mol % relative to the total amount oxidizing agent and hydrogen fluoride.26. The process of claim 22 , wherein the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages does not contain hydrogen fluoride.27. The process of claim 26 , wherein the oxidizing agent-containing gas flow of the activation stage and/or ...

PROCESS FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE

The present invention relates to a process for the production of 2-chloro-3,3,3-trifluoropropene comprising the stages of: 1. A process for the production of 2-chloro-3 ,3 ,3-trifluoropropene comprising the stages of:a) providing a stream A comprising at least one of the compounds selected from the group consisting of 2,3-dichloro-1,1,1-trifluoropropane, 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene and 2,3,3,3-tetrachloropropene;b) in a reactor, bringing said stream A into contact with HF in the presence or absence of a catalyst in order to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene; wherein the electrical conductivity of said stream A provided in stage a) is less than 15 mS/cm.2. The process as claimed in claim 1 , wherein stage b) is carried out in the gas phase in the presence or absence of a catalyst.3. The process as claimed in claim 1 , wherein stage b) is carried out in the liquid phase in the presence of a catalyst.4. The process as claimed in claim 1 , wherein the electrical conductivity of said stream A is less than 10 mS/cm.5. The process as claimed in claim 1 , wherein stage b) is carried out in the presence of a chromium-based catalyst.6. The process as claimed in claim 5 , wherein the catalyst is based on chromium and also comprises a cocatalyst selected from the group consisting of Ni claim 5 , Zn claim 5 , Co claim 5 , Mn and Mg.7. The process as claimed in claim 1 , wherein the stream B comprises claim 1 , besides 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene claim 1 , HCl claim 1 , HF claim 1 , 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene claim 1 , and optionally 2 claim 1 ,3-dichloro-3 claim 1 ,3-difluoropropene claim 1 , 2 claim 1 ,3 claim 1 ,3-trichloro-3-fluoropropene and/or 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,2-pentafluoropropane.8. The process as claimed in claim 1 , wherein stage b) is carried out at a temperature of between 320° C. and 440° C.9. The process as claimed in claim 1 , wherein ...

METHOD FOR PRODUCING 1-CHLORO-2,2-DIFLUOROETHANE

The invention relates to a method for producing 1-chloro-2,2-difluoroethane from 1,1,2-trichloroethane, comprising at least one step of separating 1-chloro-2,2-difluoroethane from the organic phase produced during the method; said step comprising a) purification of the organic phase obtained in step (iii) so as to form a first stream comprising 1-chloro-difluoroethane and hydrofluoric acid and a second stream comprising 1,1,2-trichloroethane; b) the elimination of the hydrofluoric acid from said first stream in order to form a third stream comprising 1-chloro-difluoroethane; and c) a purification of said third stream comprising 1-chloro-difluoroethane. 110-. (canceled)11. A process for producing 1-chloro-2 ,2-difluoroethane from 1 ,1 ,2-trichloroethane , comprising:(i) at least one step comprising reacting the 1,1,2-trichloroethane with hydrofluoric acid in the gas phase, in the presence or absence of a fluorination catalyst, so as to give a stream comprising 1-chloro-2,2-difluoroethane, hydrochloric acid, hydrofluoric acid and at least one compound A selected from the group consisting of 1,2-dichloroethylenes (cis and trans), 1-chloro-2-fluoroethylenes (cis and trans), 1,2-dichloro-2-fluoroethane and unreacted 1,1,2-trichloroethane;(ii) at least one step comprising separating the compounds resulting from the reaction step, so as to give a first stream comprising hydrochloric acid and a second stream comprising hydrofluoric acid, 1-chloro-2,2-difluoroethane, the at least one compound A and unreacted 1,1,2-trichloroethane;(iii)at least one step comprising separating the second stream, so as to give an organic phase comprising the 1-chloro-2,2-difluoroethane, the at least one compound A and unreacted 1,1,2-trichloroethane and a nonorganic phase comprising HF; and a) purifying the organic phase obtained in step (iii) so as to form a first stream comprising 1-chloro-2,2-difluoroethane, the at least one compound A and hydrofluoric acid and a second stream comprising 1,1, ...

Compositions comprising 2,3-dichloro-1,1,1-trifluoropropane, 2-chloro-1,1,1-trifluoropropene, 2-chloro-1,1,1,2-tetrafluoropropane or 2,3,3,3-tetrafluoropropene

Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, HCFC-244db and/or HFO-1234yf and at least one additional compound. For the composition comprising 1234yf, the additional compound is selected from the group consisting of HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243fa, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-133a, HCFC-254fb, HCFC-1131, HFO-1141, HCFO-1242zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems.

Process for preparing (z)-1,1,1,4,4,4-hexafluoro-2-butene

The present application is directed to processes and intermediates for preparing (Z)-1,1,1,4,4,4-hexafluoro-2-butene. The present application further provides compositions prepared according to one or more of the processes described herein and methods of using the compositions.

Process for Preparing C3-6(Hydro)Fluoroalkenes by Dehydrohalogenating C3-6 Halo(Hydro)Fluoroalkanes in the Presence of a Zinc/Chromia Catalyst

The invention relates to a process for preparing a C3-6 (hydro)fluoroalkene comprising dehydrohalogenating a C3-6 hydro(halo)fluoroalkane in the presence of a zinc/chromia catalyst, wherein the C3-6 (hydro)fluoroalkene produced is isomerised in the presence of the zinc/chromia catalyst. 1. A process for preparing 2 ,3 ,3 ,3-tetrafluoropropene (CF3CF═CH2) comprising:(i) fluorinating 3,3,3-trifluoro-2-chloropropene (CF3CCl═CH2) with HF to produce an intermediate composition comprising 1,1,1,2-tetrafluoro-2-chloropropane (CF3CFClCH3); and(ii) dehydrochlorinating the CF3CFClCH3 in the intermediate composition to produce CF3CF═CH2.2. A process according to claim 1 , wherein step (i) and/or (ii) is carried out in the presence of a catalyst.3. A process according to claim 2 , wherein step (i) is carried out in the presence of a chromia-containing catalyst.4. A process according to claim 2 , wherein step (ii) is carried out in the presence of a zinc/chromia catalyst.5. A process according to claim 4 , wherein the zinc/chromia catalyst comprises 0.01 to 25% by weight zinc.6. A process according to claim 4 , wherein the zinc/chromia catalyst is amorphous or from 0.1 to 50% by weight of the catalyst is in the form of one or more crystalline compounds of chromium and/or one or more crystalline compounds of zinc.7. A process according to claim 1 , wherein the intermediate composition further comprises 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,2-pentafluoropropene (CF3CF2CH2).8. A process according to claim 7 , wherein CF3CFClCH3 is fluorinated to produce CF3CF2CH3.9. A process according to claim 8 , wherein CF3CFClCH3 is fluorinated with HF in the presence of a chromia-containing catalyst to produce CF3CF2CH3.10. A process according to claim 7 , wherein the CF3CF2CH3 is dehydrofluorinated to produce CF3CF═CH2.11. A process according to claim 1 , wherein the ratio of HF:organics in the fluorinating step is from about 5:1 to about 30:1.12. A process according to claim 1 , ...

Process for Preparing C3-6 (Hydro)Fluoroalkenes by Dehydrohalogenating C3-6 Halo(Hydro)Fluoroalkanes in the Presence of a Zinc/Chromia Catalyst

The invention relates to a process for preparing a C3-6 (hydro)fluoroalkene comprising dehydrohalogenating a C3-6 hydro(halo)fluoroalkane in the presence of a zinc/chromia catalyst, wherein the C3-6 (hydro)fluoroalkene produced is isomerised in the presence of the zinc/chromia catalyst. 1. A fluid comprising an isomer or an isomer blend of a C3-6 (hydro)fluoroalkene , wherein the C3-6 (hydro)fluoroalkene is produced by a process comprising dehydrohalogenating a C3-6 hydro(halo)fluoroalkene in the presence of a zinc/chromia catalyst , wherein the C3-6 (hydro)fluoroalkene produced is isomerised in the presence of the zinc/chromia catalyst.2. A fluid according to claim 1 , wherein the C3-6 (hydro)fluoroalkene exists in E and Z isomers claim 1 , and the ratio of E and Z isomers is changed in the presence of the zinc/chromia catalyst.3. A fluid according to claim 4 , wherein the presence of the zinc/chromia catalyst changes the ratio of E and Z isomers from that which is the kinematic determined mixture of isomers from the preparation of the C3-6 (hydro)fluoroalkene.4. A fluid according to claim 2 , wherein the desired isomer of the C3-6 (hydro)fluoroalkene is recovered in a subsequent step.5. A fluid according to claim 1 , wherein the process is carried out at a temperature of from −70° C. to 400° C. and a pressure of from 0 to 30 bara.6. A fluid according to claim 7 , wherein the process is carried out in the vapour phase at a temperature of from 200 to 360° C.7. A fluid according to claim 5 , wherein the process is carried out at super-atmospheric pressure.8. A fluid according to claim 1 , wherein the C3-6 (hydro)fluoroalkene is a (hydro)fluoropropene and the process comprises dehydrohalogenating a hydro(halo)fluoropropene.9. A fluid according to claim 10 , wherein the (hydro)fluoropropene produced is selected from tetrafluoropropenes and pentafluoropropenes.10. A fluid according to claim 11 , wherein the (hydro)fluoropropene comprises 1 claim 11 ,2 claim 11 ,3 claim ...

CHROMIA BASED FLUORINATION CATALYST

A chromia-based fluorination catalyst comprising at least one additional metal selected from zinc, nickel, aluminium and magnesium in which from 0.1 to 8.0% by weight of the catalyst is in the form of one or more crystalline compounds of chromium and/or one or more crystalline compounds of the at least one additional metal. The catalyst can be used in processes for producing a fluorinated hydrocarbon. 1. A chromia-based fluorination catalyst consisting of:amorphous chromia;zinc oxide in a total amount of zinc of from 0.5 to 25% by weight of the catalyst; andcrystalline chromium oxide in a total amount of from 0.1 to 2.5% by weight of the catalyst;which catalyst is supported or unsupported.2. A catalyst according to having a surface area of at least 50 m2/g.3. A catalyst according to having a surface area of from 70 to 250 m2/g.4. A catalyst according to having a sulphate content of less than 10% w/w.5. A method for producing a catalyst as defined in claim 1 , which method comprises heat treating an amorphous catalyst precursor at a temperature of from 300 to 600° C. for a period of from 1 to 12 hours in an atmosphere of nitrogen or an atmosphere having an oxygen level of from 0.1 to 10% v/v in nitrogen.6. A method for prefluorinating a catalyst according to claim 1 , which method comprises heat treating the catalyst at a temperature of from 250 to 500° C. for a period of from 1 to 16 hours at atmospheric or superatmospheric pressure in the presence of hydrogen fluoride.7. A process for producing a fluorinated hydrocarbon claim 1 , which process comprises reacting a halogenated hydrocarbon with hydrogen fluoride in the presence of a catalyst as defined in .8. A process for producing a fluorinated hydrocarbon claim 6 , which process comprises reacting a halogenated hydrocarbon with hydrogen fluoride in the presence of a catalyst produced according to the method of .9. A process according to that is carried out at elevated temperature in the vapour phase.10. A process ...

Process for Preparing (Z)-1,1,1,4,4,4-Hexafluoro-2-Butene

The present application is directed to processes and intermediates for preparing (Z)-1,1,1,4,4,4-hexafluoro-2-butene. The present application further provides compositions prepared according to one or more of the processes described herein and methods of using the compositions. 1. A process of preparing 2-chloro-1 ,1 ,1 ,4 ,4 ,4-hexafluoro-2-butene , comprising reacting hexachlorobutadiene with hydrofluoric acid in the presence of a transition metal catalyst , wherein greater than about 99 mole percent of the 2-chloro-1 ,1 ,1 ,4 ,4 ,4-hexafluoro-2-butene produced is (Z)-2-chloro-1 ,1 ,1 ,4 ,4 ,4-hexafluoro-2-butene.2. The process of claim 1 , wherein the transition metal catalyst is selected from a tantalum catalyst claim 1 , a niobium catalyst claim 1 , or a tantalum-niobium catalyst.3. The process of claim 1 , wherein the transition metal catalyst is tantalum (V) chloride.4. The process of claim 1 , wherein the transition metal catalyst is niobium (V) chloride or niobium (IV) chloride.5. The process of claim 1 , wherein the transition metal catalyst is a mixture of a tantalum catalyst and a niobium catalyst.6. The process of claim 1 , wherein a molar excess of hydrofluoric acid is used based on 1 molar equivalent of hexachlorobutadiene.7. The process of claim 1 , wherein the process is performed a temperature of from about 110° C. to about 135° C.8. The process of claim 1 , wherein the process comprises:i) adding the transition metal catalyst to the hydrofluoric acid to form a first mixture; andii) adding the hexachlorobutadiene to the first mixture to form a second mixture.9. The process of claim 8 , wherein the first mixture is heated to a temperature of from about 110° C. to about 140° C.10. The process of claim 9 , further comprising cooling the first mixture to a temperature of from about −10° C. to about 10° C. prior to performing step ii).11. The process of claim 10 , further comprising heating the second mixture to a temperature of from about 110° C. to ...

Method for Producing Trans-1-Chloro-3,3,3-Trifluoropropene

wherein X is 2 or 3; when X=2, Y is an integer of 1 to 4, Z is an integer of 0 to 3, and Y+Z=4; and, when X=3, Y is an integer of 1 to 5, Z is an integer of 0 to 4, and Y+Z=5; provided that the general formula (1) represents any halogenated C3 hydrocarbon compound other than trans-1-chloro-3,3,3-trifluoropropene.

METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE

The invention relates to a method for producing 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) from at least one compound A selected from the group consisting of halopropane of formulae CXCHClCHX or CXCFClCH, or halopropenes of formula CQXCCNCHand CX═CClCHX where X independently represents a fluorine or chlorine atom, characterised in that it comprises bringing said at least one compound A into contact with HF in a gaseous phase in the presence of a fluorination catalyst AlFor fluorine-bearing alumina in order to form a gaseous flow B comprising 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) et 3,3,3-trifluoropropene (HFO-1243zf). 110.-. (canceled)11. A process for manufacturing 2-chloro-3 ,3 ,3-trifluoropropene (HCFO-1233xf) starting with at least one compound A comprising a halopropane of formula CXCHClCHX or CXCFClCH , or halopropenes of formula CClXCCl═CHor CX═CClCHX with X independently representing a fluorine or chlorine atom , the process comprising placing said at least one compound A in contact with HF in the gaseous phase at a temperature of between 225° C. and 450° C. in the presence of a fluorination catalyst AlFor fluorinated alumina to form a gaseous stream B comprising 2-chloro-3 ,3 ,3-trifluoropropene (HCFO-1233xf) and 3 ,3 ,3 -trifluoropropene (HFO-1243zf).12. The process as claimed in claim 11 , wherein stream B also comprises trichlorofluoropropene (HCFO-1231).13. The process as claimed in claim 11 , wherein stream B also comprises a dichlorodifluoropropene (HCFO-1232).14. The process as claimed in claim 11 , wherein the placing in contact is performed at a temperature of between 250° C. and 400° C.15. The process as claimed in claim 11 , wherein the placing in contact is performed with a mole ratio of HF relative to said at least one compound A of between 0.5 and 50.16. The process as claimed in claim 11 , wherein the placing in contact is performed at a pressure of between 0.5 and 20 bar.17. The process as claimed in claim 11 , wherein the placing ...

METHOD FOR CO-PRODUCING VARIOUS ALKENYL HALIDES AND HYDROFLUOROALKANES

Disclosed is a method for co-producing various alkenyl halides and hydrofluoroalkanes: cis-1-chloro-3,3,3-trifluoropropene is introduced into a first reactor to carry out an isomerization reaction in the presence of a first catalyst, and the reaction product is rectified to obtain a product trans-1-chloro-3,3,3-trifluoropropene; and 30-70 wt % of trans-1-chloro-3,3,3-trifluoropropene and hydrogen fluoride are mixed and then introduced into a second reactor to carry out a reaction in the presence of a second catalyst to obtain a second reactor reaction product; the second reactor reaction product is introduced into a phase separator for separation, and the obtained organic phase is rectified to obtain the products trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane. The invention has the advantages of simple process, high efficiency, high operation flexibility, less investment and low energy consumption. 1. A method for co-producing alkenyl halides and hydrofluoroalkanes , comprising following steps of:{'sup': '−1', '(a) introducing cis-1-chloro-3,3,3-trifluoropropene into a first reactor where an isomerization reaction occurs in the presence of a first catalyst to obtain a first reactor reaction product, wherein a temperature of the isomerization reaction is 200-400° C., and an air velocity of the isomerization reaction is 300-1000 h;'}(b) introducing the first reactor reaction product obtained in the Step (a) into a first rectification column to obtain a product of trans-1-chloro-3,3,3-trifluoropropene and a first rectification column bottom liquid;{'sup': '−1', '(c) mixing 30-70 wt % of the trans-1-chloro-3,3,3-trifluoropropene obtained in the Step (b) with hydrogen fluoride, and then introducing the trans-1-chloro-3,3,3-trifluoropropene and the hydrogen fluoride in a second reactor where a reaction occurs in the presence of a catalyst to obtain a second reactor reaction product, wherein a molar ratio of the hydrogen ...

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)

The invention pertains to a method in which the production of HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane) and/or of HCFC-122 (1,1,2-trichloro-2,2-difluoroethane) in at least one reaction step takes place in a microreactor. Particularly, in preferred embodiments of the invention pertains to a method in which the production of HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane) and/or of HCFC-122 (1,1,2-trichloro-2,2-difluoroethane) in at least one reaction step takes place in a microreactor that comprises or is made of SiC (“SiC-microreactor”), or in a microreactor that comprises or is made of an alloy, e.g. such as Hastelloy C. In an ebodiment, the processes for the manufacture of HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane) and/or of HCFC-122 (1,1,2-trichloro-2,2-difluoroethane) can be efficiently combined in that HCFC-122 (1,1,2-trichloro-2,2-difluoroethane) produced by the method according the invention by using a microreactor, preferably an SiC-microreactor, may preferably advantageously serve as starting material/and/or intermediate material in the manufacture of HCFC-123 (2,2-dichloro-1,1,1-trifluoroethane), preferably also in a microreactor. 1. A process of manufacturing CHClCF(HCFC-123) , comprising:{'sub': 2', '2, '(a) providing CHClCClF(HCFC-122);'}(b) providing HF and a catalyst;(c) mixing the HCFC-122 in the step (a) with the HF and the catalyst in the step (b);{'sub': 2', '3, '(d) feeding the mixture obtained in the step (c) into at least one continuous flow reactor with upper lateral dimensions of about ≤4 mm, and carrying out the reaction of the HCFC-122 with the HF in the presence of the catalyst in the at least one continuous flow reactor to obtain a reaction mixture comprising CHClCF(HCFC-123); and'}(e) taking out the reaction mixture obtained in the step (d) from the continuous flow reactor to yield a product comprising HCFC-123.2. The process of claim 1 , wherein the HCFC-122 in the step (a) is formed by reacting tetrachloroethylene (PER) with HF ...

METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS

Disclosed is a process for producing fluorinated organic compounds, including hydrofluoropropenes, which preferably comprises converting at least one compound of Formula (I): 2. The method of wherein said converting step is a direct converting step.3. The method of wherein said converting step is an indirect converting step.4. The method of wherein said at least one compound of Formula (I) comprises a compound wherein each X on one terminal carbon is H and wherein each X on the other terminal carbon is independently selected from F claim 1 , Cl claim 1 , I or Br.6. The method of wherein Z in said compound of Formula (II) is H.7. The method of wherein each X is F.8. The method of wherein said at least one compound of Formula (I) comprises at least pentahalogenated compound.9. The method of wherein said at least one compound of Formula (IA) comprises at least one trichlorinated claim 5 , difluorinated propane.10. The method of wherein said at least one compound of Formula (I) comprises 1 claim 1 ,1 claim 1 ,1-trichloro-2 claim 1 ,2-difluoropropane (HCFC-242bb).11. The method of wherein said at least one compound of Formula (I) comprises 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,2-pentafluoropropane (HFC-245cb).12. The method of wherein said at least one compound of Formula (I) is selected from the group consisting of HCFC-242bb claim 1 , HFC-245cb and combinations of these.14. The method of wherein said first compound of Formula (IA) comprises at least 1 claim 13 ,1 claim 13 ,1-trichloro-2 claim 13 ,2-difluoropropane (HCFC-242bb) and said second compound of Formula (IA) comprises at least 1 claim 13 ,1 claim 13 ,1 claim 13 ,2 claim 13 ,2-pentafluoropropane (HFC-245cb).15. The method of wherein said at least one compound in accordance with Formula (II) comprises HFO-1234yf.16. The method of wherein said exposing step comprises at least one gas phase catalytic reaction.17. The method of wherein said converting step comprises at least one gas phase catalytic reaction. ...

METHOD FOR PRODUCING TETRAFLUOROPROPENE

The present invention provides a method for producing tetrafluoropropene represented by formula (1) by bringing monochlorotrifluoropropene represented by formula (2) into contact with anhydrous hydrogen fluoride in the presence of a catalyst, the method being capable of maintaining the conversion of the starting material and the selectivity for the target product within an excellent range, while reducing degradation of the catalyst to maintain the reaction for a long time. The invention specifically relates to a method for producing tetrafluoropropene represented by formula (1) CFCX═CHX wherein Xs are different from each other and represent H or F, including the step of bringing an organic substance containing monochlorotrifluoropropene represented by formula (2) CFCY═CHY wherein Ys are different from each other and represent H or Cl into contact with anhydrous hydrogen fluoride in the presence of a catalyst in a reactor, wherein the amount of the anhydrous hydrogen fluoride supplied to the reactor is 30 moles or more per mole of the organic substance supplied to the reactor. 2. The production method according to claim 1 , wherein the amount of the anhydrous hydrogen fluoride supplied to the reactor is 30 to 100 moles per mole of the organic substance supplied to the reactor.3. The production method according to claim 1 , wherein the catalyst is a fluorination catalyst.4. The production method according to claim 1 , comprising supplying an oxidizing agent to the reactor.5. The production method according to claim 4 , wherein the amount of the oxidizing agent supplied to the reactor is 0.0001 to 0.5 moles per mole of the organic substance supplied to the reactor.6. The production method according to claim 4 , wherein the oxidizing agent is oxygen.7. The production method according to claim 2 , wherein the catalyst is a fluorination catalyst.8. The production method according to claim 2 , comprising supplying an oxidizing agent to the reactor.9. The production method ...

METHOD FOR CO-PRODUCING LOW-CARBON FOAMING AGENTS

The invention discloses a method for co-operating low-carbon foaming agents, comprising: preheating 1,1,1,3,3-pentachloropropane and hydrogen fluoride and then introducing into a reactor to have a reaction in the presence of a catalyst to obtain a reaction product, and separating and purifying to obtain the following low-carbon foaming agent products: trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene, 1,1,1,3,3-pentafluoropropane, trans-1-chloro-3,3,3-trifluoropropene, cis-1-chloro-3,3,3-trifluoropropene. The invention has the advantages of simple process, environmental friendliness, high production efficiency and low cost. 1. A method for co-producing low-carbon foaming agents , comprising following steps of:{'sup': '−1', '(1) preheating 1,1,1,3,3-pentachloropropane and hydrogen fluoride, introducing the 1,1,1,3,3-pentachloropropane and the hydrogen fluoride into a reactor, and reacting the 1,1,1,3,3-pentachloropropane and the hydrogen fluoride in the presence of a catalyst to obtain a reaction product, wherein a ratio of the 1,1,1,3,3-pentachloropropane and the hydrogen fluoride is 1:10-40, a temperature of the reaction is 150-400° C., a pressure of the reaction is 0.1-2.0 MPa, and a material space velocity of the reaction is 10-1000 h;'}(2) introducing the reaction product obtained in the Step (1) into a recycle column to obtain a recycle column overhead fraction and a recycle column bottom component;(3) introducing the recycle column overhead fraction obtained in the Step (2) into a hydrogen chloride separation column to obtain a hydrogen chloride separation column overhead fraction and a hydrogen chloride separation column bottom component;(4) introducing the hydrogen chloride separation column bottom component obtained in the Step (3) and an extractant into an extraction column for extraction to obtain an extraction column overhead component and an extraction column bottom component; and(5) alkaline washing the extract column bottom component ...

METHOD OF SIMULTANEOUSLY PREPARING 1,1,1-TRIFLUORO-2-CHLOROPROPENE AND 1,1,1,2-TETRAFLUOROPROPENE USING GAS PHASE CATALYST

Disclosed is a method of simultaneously preparing 1,1,1-trifluoro-2-chloropropene and 1,1,1,2-tetrafluoropropene, the method including i) a step of elevating a temperature of a reactor charged with a gas phase catalyst up to a reaction temperature; ii) a step of feeding 1,1,1-trifluoro-2,3-dichloropropane and 2-chloro-1,1,1,2-tetrafluoropropane into the reactor, the temperature of which has been elevated; iii) a step of performing dehydrochlorination while maintaining the temperature of the reactor; and iv) a step of performing washing and distillation after the dehydrochlorination. In accordance with the present disclosure, a high-efficient gas-phase process of continuously, simultaneously preparing 1,1,1-trifluoro-2-chloropropene and 1,1,1,2-tetrafluoropropene is provided. 1. A method of simultaneously preparing 1 ,1 ,1-trifluoro-2-chloropropene and 1 ,1 ,1 ,2-tetrafluoropropene , the method comprising:i) elevating a temperature of a reactor charged with a gas phase catalyst up to a reaction temperature;ii) feeding 1,1,1-trifluoro-2,3-dichloropropane and 2-chloro-1,1,1,2-tetrafluoropropane into the reactor, the temperature of which has been elevated;iii) performing dehydrochlorination while maintaining the temperature of the reactor; and 'wherein the gas phase catalyst is a catalyst in which a metal is supported on a support, the support is selected from activated carbon, activated alumina, or a molecular sieve, and the metal is selected from the group consisting of Zn, Pd, Pt, Sb, V, Sn, and Bi.', 'iv) performing washing and distillation after the dehydrochlorination: and'}2. (canceled)3. (canceled)4. (canceled)5. The method according to claim 1 , wherein the metal is Zn.6. The method according to claim 5 , wherein a Zn content in the gas phase catalyst is 1 to 20% by weight.7. The method according to claim 1 , wherein a reaction temperature of the reactor is 300 to 400° C.8. The method according to claim 1 , wherein an inflow rate of 1 claim 1 ,1 claim 1 ,1- ...

PROCESS FOR PREPARING 2-CHLORO-3,3,3-TRIFLUOROPROPENE

Provided is a process for preparing 2-chloro-3,3,3-trifluoropropene, wherein at least one chlorine-containing compound selected from the group consisting of chloropropane represented by formula (1): CXCHClCHCl, wherein each X is the same or different and each represents Cl or F, chloropropene represented by formula (2): CClYCCl═CH, wherein each Y is the same or different and each represents Cl or F, and chloropropene represented by formula (3): CZ═CClCHCl, wherein each Z is the same or different and each represents Cl or F, is used as a starting compound, and said at least one chlorine-containing compound is reacted with hydrogen fluoride while being heated in a gaseous state in the presence of 50 ppm or more of water relative to the chlorine-containing compound. The process of the present invention makes it possible to produce 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) in a manner that is easily conducted, economically advantageous, and suitable for industrial scale production. 1. A process for preparing 2-chloro-3 ,3 ,3-trifluoropropene comprising:reacting a chlorine-containing compound with hydrogen fluoride while being heated in a gaseous state in the presence of 50 ppm or more of water relative to the total weight of the chlorine-containing compound,{'sub': 3', '2', '2', '2', '2', '2, 'the chlorine-containing compound being at least one compound selected from the group consisting of chloropropane represented by formula (1): CXCHClCHCl, wherein each X is the same or different and each represents Cl or F; chloropropene represented by formula (2): CClYCCl═CH, wherein each Y is the same or different and each represents Cl or F; and chloropropene represented by formula (3): CZ═CClCHCl, wherein each Z is the same or different and each represents Cl or F.'}2. The process according to claim 1 , wherein the reaction is conducted in the absence of a catalyst.3. The process for preparing 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene according to claim 1 , wherein ...

DICHLOROMETHANE PURIFICATION METHOD AND PROCESS FOR PRODUCING DIFLUOROMETHANE USING THE SAME

To provide a dichloromethane purification method which can reduce the amount of stabilizers present in dichloromethane and is feasible in industry by a simple operation, a dichloromethane purification method includes bringing dichloromethane containing at least one stabilizer selected from the group consisting of 2-methyl-2-butene, hydroquinone and resorcinol into contact in a liquid phase state with a zeolite having an average pore size of 3 to 11 Å and thereby reducing the amount of the stabilizer. 1. A dichloromethane purification method comprising bringing dichloromethane containing at least one stabilizer selected from the group consisting of 2-methyl-2-butene , hydroquinone and resorcinol into contact in a liquid phase state with a zeolite having an average pore size of 3 to 11 Å and thereby reducing the amount of the stabilizer.2. The dichloromethane purification method according to claim 1 , wherein the zeolite is at least one selected from the group consisting of molecular sieve 3A claim 1 , molecular sieve 4A claim 1 , molecular sieve 5A claim 1 , molecular sieve 10X and molecular sieve 13X.3. The dichloromethane purification method according to claim 1 , wherein the contact between the dichloromethane and the zeolite in a liquid phase state is performed at a temperature of −15 to 65° C.4. A difluoromethane production process comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(1) a step of purifying dichloromethane by the method described in ; and'}(2) a step of reacting the dichloromethane resulting from the step (1) with hydrogen fluoride in a reactor in a gas phase in the presence of a fluorination catalyst to form a gas including difluoromethane.5. The difluoromethane production process according to claim 4 , wherein the fluorination catalyst is a supported or bulk catalyst including a catalyst component containing chromium (III) oxide.6. The difluoromethane production process according to claim 4 , wherein the fluorination catalyst is a ...

AZEOTROPIC OR AZEOTROPE-LIKE COMPOSITIONS OF 1,3-DICHLORO-3,3-DIFLUOROPROP-1-ENE (HCFO-1232zd) AND HYDROGEN FLUORIDE (HF)

Azeotropic or azeotrope-like mixtures of 1,3-dichloro-3,3-difluoroprop-1-ene (HCFO-1232zd) 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). 1. An azeotropic or azeotrope-like composition consisting essentially of 1 ,3-dichloro-3 ,3-difluoroprop-1-ene (HCFO-1232zd) and hydrogen fluoride (HF).2. The composition of claim 1 , wherein the composition consists of 1 claim 1 ,3-dichloro-3 claim 1 ,3-difluoroprop-1-ene (HCFO-1232zd) and hydrogen fluoride (HF).3. The composition of claim 1 , wherein the composition consists essentially of from about 1 to about 99 wt. % hydrogen fluoride (HF) and from about 1 to about 99 wt. % 1 claim 1 ,3-dichloro-3 claim 1 ,3-difluoroprop-1-ene (HCFO-1232nd) claim 1 , based on the combined weight of the hydrogen fluoride (HF) and 1 claim 1 ,3-dichloro-3 claim 1 ,3-difluoroprop-1-ene (HCFO-1232zd).4. The composition of claim 1 , wherein the composition consists essentially of from about 2 to about 99 wt. % hydrogen fluoride (HF) and from about 1 to about 98 wt. % 1 claim 1 ,3-dichloro-3 claim 1 ,3-difluoroprop-1-ene (HCFO-1232nd) claim 1 , based on the combined weight of the hydrogen fluoride (HF) and 1 claim 1 ,3-dichloro-3 claim 1 ,3-difluoroprop-1-ene (HCFO-1232zd).5. The composition of claim 1 , wherein the composition consists essentially of from about 2 to about 80 wt. % hydrogen fluoride (HF) and from about 20 to about 98 wt. % 1 claim 1 ,3-dichloro-3 claim 1 ,3-difluoroprop-1-ene (HCFO-1232nd) claim 1 , based on the combined weight of the hydrogen fluoride (HF) and 1 claim 1 ,3-dichloro-3 claim 1 ,3-difluoroprop-1-ene (HCFO-1232zd).6. The composition of claim 1 , wherein the composition has a boiling point of about −10° C.±0.5° C. at a pressure of about 7 psia±1 psia.7. A method of forming an azeotropic or azeotrope-like composition comprising ...

Chromium-free catalyst for gas-phase fluorination and application thereof

Disclosed in the present invention are a chromium-free gas phase fluorination catalyst and an application thereof. The precursor of the related chromium-free gas phase fluorination catalyst consists of a compound containing iron element, a compound containing rare earth metal element and a compound containing element A, wherein element A is one selected from Ca, Al, Mg and Ti, the precursor is subjected to roasting and fluorination treating to obtain the chromium-free gas phase fluorination catalyst. The precursor of the catalyst is roasted at 400-500° C. and fluoridized with hydrogen fluoride at 350-450° C. to obtain the chromium-free gas phase fluorination catalyst. The catalyst has characteristics of being chromium-free and environment-friendly, good catalytic activity and long life etc. The catalyst can be used for preparing hydrofluoroolefins or hydrochlorofluoroolefins from halohydrocarbons.

Process for Preparing Fluorobenzene and Catalyst Therefore

The invention relates to process for the manufacture or preparation of fluorinated benzene, in particular monofluorobenzene, in a vapor-phase fluorination process. The process of the invention, for example, can comprise a batch or continuous manufacture or preparation of fluorinated benzene, in particular monofluorobenzene, using hydrogen fluoride (HF) in gas phase as fluorination gas. Also, in this process of the invention, for example, fluorination catalysts are involved. 1. A process for the manufacture of a fluorinated benzene , preferably monofluorobenzene , in a vapor-phase fluorination process comprising the steps of:a) provision of a chlorinated benzene as starting compound;b) provision of a fluorination gas consisting of anhydrous hydrogen fluoride (HF);c) provision of a fluorination catalyst, optionally of an activated and/or reactivated, and/or of a pre-fluorinated fluorination catalyst;d) provision of a reactor or reactor system, resistant to hydrogen fluoride (HF), and comprising a vaporizer for the starting compound of a), and a condenser for the vapor-phase fluorination reaction product, and a reservoir for collecting the fluorination reaction product;e) at least one vapor-phase reaction stage comprising reacting of a) a vaporized chlorinated benzene with b) anhydrous hydrogen fluoride (HF) in gas phase in the presence of c) the fluorination catalyst, so as to produce a vapor-phase fluorination reaction product;f) withdrawing the vapor-phase fluorination reaction product formed in the vapor-phase reaction step e) from the reactor or reactor system of d), and transferring the vapor-phase fluorination reaction product to the condenser and condensing for collecting the condensed fluorination reaction product; andg) hydrolysing the fluorination reaction product obtained and collected according to f), in water, to obtain a fluorinated benzene, preferably monofluorobenzene; andh) phase separation of the organic phase of fluorinated benzene, preferably ...

METHOD FOR CONTINUOUS PREPARATION OF 2,3,3,3-TETRAFLUOROPROPENE

The invention provides a continuous preparation method of 2,3,3,3-tetrafluoropropene, comprising the following steps: carrying out liquid-phase catalytic telomerization reaction on ethylene and carbon tetrachloride serving as initial raw materials in the presence of a composite catalyst to obtain a reaction product; performing two-stage membrane separation and purification on the reaction product, and then sequentially performing a primary high-temperature cracking reaction, a gas-phase chlorination reaction, a secondary high-temperature cracking reaction, a primary gas-phase catalytic fluorination reaction and a secondary gas-phase catalytic fluorination reaction to obtain a reaction product; condensing and rectifying the secondary gas-phase catalytic fluorination reaction product to obtain the 2,3,3,3-tetrafluoropropene product. 1. A continuous preparation method of 2 ,3 ,3 ,3-tetrafluoropropene , comprising the following steps:step 1, in the presence of a composite catalyst, continuously introducing ethylene and carbon tetrachloride into a telomerization reactor for liquid-phase catalytic telomerization reaction to obtain a first reaction product, wherein the reaction is carried out at a temperature of 90° C. to 120° C., under a pressure of 0.5 Mpa to 1.0 Mpa and with a residence time of 1 h to 2 h, a molar ratio of carbon tetrachloride to ethylene is (1-4):1, and a mass ratio of carbon tetrachloride to composite catalyst is (40-100):1;step 2, introducing the first reaction product obtained in the step 1 into a first membrane separator for separation to obtain a first stream and a second stream;step 3, introducing the second stream obtained in the step 2 into a second membrane separator for separation to obtain a third stream and a fourth stream, and recycling the fourth stream to the telomerization reactor;step 4, mixing the third stream obtained in the step 3 with the first stream obtained in the step 2, and then introducing the mixture into a first separation ...

CATALYST AND PROCESS USING THE CATALYST

A new chromium-containing fluorination catalyst is described. The catalyst comprises an amount of zinc that promotes activity and from 0.1 to 8.0% by weight of the chromium in the catalyst based on the total weight of the chromium is present as chromium (VI). The use of the zinc-promoted, chromium-containing catalyst in a fluorination process in which a hydrocarbon or halogenated hydrocarbon is reacted with hydrogen fluoride in the vapour-phase at elevated temperatures is also described. 1. A chromium-containing fluorination catalyst comprising from 0.5 to less than 3% by weight of zinc based on the total weight of the catalyst , wherein from 0.1 to 8.0% by weight of the chromium in the catalyst based on the total weight of said chromium is present as chromium (VI) and wherein the catalyst is amorphous or partially crystalline comprising less than 5.0% by weight of crystalline compounds of chromium and/or zinc.2. The catalyst of claim 1 , wherein from 92.0 to 99.9% by weight of the chromium in the catalyst based on the total weight of said chromium is present as chromium (III).3. The catalyst of claim 1 , wherein from 0.5 to 5.0% by weight of the chromium in the catalyst based on the total weight of said chromium is present as chromium (VI).4. The catalyst of claim 3 , wherein from 95.0 to 99.5% by weight of the chromium in the catalyst based on the total weight of said chromium is present as chromium (III).5. The catalyst of claim 1 , wherein from 1.0 to 4.0% by weight of the chromium in the catalyst based on the total weight of said chromium is present as chromium (VI).6. The catalyst of claim 5 , wherein from 96.0 to 99.0% by weight of the chromium in the catalyst based on the total weight of said chromium is present as chromium (III).7. The catalyst of claim 2 , wherein the balance of the chromium in the catalyst is present as chromium (III).8. The catalyst of claim 1 , wherein the catalyst comprises one or more chromium (VI) compounds selected from the group ...

PROCESS FOR THE MANUFACTURE OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFO 1233xf) BY LIQUID PHASE FLUORINATION OF PENTACHLOROPROPANE

Process of catalytic fluorination in liquid phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2-chloro-3,3,3-trifluoropropene in presence of a catalyst. 1. Process comprising fluorination in the liquid phase of 1 ,1 ,1 ,2 ,3-pentachloropropane or/and 1 ,1 ,2 ,2 ,3-pentachloropropane into 2-chloro-3 ,3 ,3-trifluoropropene , with HF , in the presence of a catalyst.2. Process according to claim 1 , which is carried out in an organic medium.3. Process according to claim 1 , carried out in a solvent.4. Process according to claim 3 , in which the solvent is present in a dilution ratio of at least 20% with respect to said organic medium.5. Process according to claim 3 , in which the solvent is selected from the group consisting of 1 claim 3 ,2-dichloroethane claim 3 , 1 claim 3 ,2 claim 3 ,3-trichloropropane claim 3 , 1-chloro-1-fluoroethane claim 3 , 1 claim 3 ,1-difluoroethane claim 3 , 1 claim 3 ,1-dichloroethane claim 3 , 1 claim 3 ,3-dichloro-1-fluorobutane claim 3 , tetrachlorofluoropropane isomers claim 3 , trichlorodifluoropropane isomers claim 3 , dichlorotrifluoropropane isomers claim 3 , 1 claim 3 ,1 claim 3 ,1 claim 3 ,3 claim 3 ,3-pentafluorobutane claim 3 , 1 claim 3 ,1 claim 3 ,2-trichloro-2 claim 3 ,2-difluoroethane claim 3 , nitrated solvents claim 3 , sulfones claim 3 , 1 claim 3 ,1 claim 3 ,2-trichloro-2-fluoroethane claim 3 , perchloroethylene claim 3 , and mixtures thereof.6. Process according to claim 1 , in which the catalyst is an ionic liquid.7. Process according to claim 1 , in which the molar ratio catalyst 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane or/and 1 claim 1 ,1 claim 1 ,2 claim 1 ,2 claim 1 ,3-pentachloropropane lies between 2 mol % and 90 mol %.8. Process according to further comprising adding chlorine.9. Process according to further comprising injecting gaseous anhydrous HCl.10. Process according to the claim 9 , in which the flow of gas claim 9 , compared to the flow of ...

LIQUID PHASE PROCESS FOR PREPARING (E)-1,1,1,4,4,4-HEXAFLUOROBUT-2-ENE

Disclosed herein are methods of producing E-CFCH═CHCFin a liquid phase. Also disclosed are methods of preparing CFCHCHClCFand CFCHClCHCCl. 1. A process for preparing E-CFCH═CHCF , comprising:{'sub': 3', '2', '3', '3', '3, 'treating CFCHCHClCFwith an effective amount of a base to form a mixture comprising the E-CFCH═CHCF,'}wherein the process is a liquid phase process.2. The process of claim 1 , wherein the mixture further comprises one or more of hexafluoroisobutylene (1336mt) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,4 claim 1 ,4 claim 1 ,4-hexafluorobutane (356mff) claim 1 , (E)-1-chloro-1 claim 1 ,1 claim 1 ,4 claim 1 ,4 claim 1 ,4-pentafluorobut-2-ene (1335lzz) claim 1 , and Z—CFCH═CHCF.3. The process of claim 1 , wherein the base is selected from the group consisting of lithium hydroxide claim 1 , lithium oxide claim 1 , sodium hydroxide claim 1 , sodium oxide claim 1 , potassium hydroxide claim 1 , potassium oxide claim 1 , rubidium hydroxide claim 1 , rubidium oxide claim 1 , cesium hydroxide claim 1 , cesium oxide claim 1 , calcium hydroxide claim 1 , calcium oxide claim 1 , strontium hydroxide claim 1 , strontium oxide claim 1 , barium hydroxide claim 1 , and barium oxide.4. The process of claim 3 , wherein the base is potassium hydroxide or sodium hydroxide.5. The process of claim 1 , wherein the base is in an aqueous solution of from about 4 M to about 12 M.6. The process of claim 1 , wherein the process is performed in the presence of a phase transfer catalyst selected from the group consisting of a quaternary ammonium salt claim 1 , a heterocyclic ammonium salt claim 1 , an organic phosphonium salt claim 1 , and a nonionic compound.7. The process of claim 6 , wherein the phase transfer catalyst is selected from the group consisting of benzyltrimethylammonium chloride claim 6 , benzyltriethylammonium chloride claim 6 , methyltricaprylammonium chloride claim 6 , methyltributylammonium chloride claim 6 , methyltrioctylammonium chloride claim 6 , ...

PROCESS FOR THE PREPARATION 1,1,1,2,2-PENTAFLUOROPROPANE

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 (CFCCI═CH, 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. 2. The process according to wherein the dehydrochlorination step is carried out in a first reactor and the fluorination step is carried out in a second reactor.310-. (canceled)11. The process according to wherein the intermediate composition exits the first reactor and is fed directly to the second reactor.1318-.19. The process according to wherein the intermediate composition exits the first reactor and is fed directly to the second reactor.20. The process according to wherein the catalytic dehydrochlorination of 243db is carried out in the presence of HF and the intermediate composition further contains HF.21. The process according to wherein the composition comprising 243db additionally contains HF claim 20 , with a molar ratio of HF:243db of from 0.5:1 to 40:1 claim 20 , or from 1:1 to 15:1.22. The process according to wherein the contact time for the composition comprising 243db and HF with the catalyst is from 0.5 to 200 seconds claim 20 , or from 1 to 150 seconds claim 20 , or from 1 to 100 seconds claim 20 , or from 2 to 80 seconds claim 20 , or from 8 to 60 seconds.23. The process according to wherein the molar ratio of HF:1233xf in the second reactor is from 1:1 to 45:1 claim 2 , or from 2:1 to 20:1 or from 3:1 to 15:1 claim 2 , or wherein an additional feed of HF is provided to the second reactor.24. The process according to wherein the contact time for ...

PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE

The present invention relates, in part, to the discovery that, during the fluorination of certain fluoroolefin starting reagents, oligomerization/polymerization of such reagents reduces the conversion process and leads to increased catalyst deactivation. The present invention also illustrates that vaporizing such starting reagents in the presence of one or more organic co-feed reduces such oligomerization/polymerization and improves catalytic stability. 2. The composition of claim 1 , wherein the compound of Formula I comprises 1 claim 1 ,1 claim 1 ,2 claim 1 ,3-tetrachloropropene (1230xa); the compound of Formula II comprises 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrachloropropene (1230xf); and the compound of Formula III comprises 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane (240db).3. The composition of claim 1 , wherein the at least one or more organic compounds are present in an amount ranging from 1 to 50 wt %.4. The composition of claim 3 , wherein the at least one or more organic compounds are present in an amount ranging from 3 to 30 wt %.5. The composition of claim 3 , wherein the at least one or more organic compounds are present in an amount ranging from 5 to 15 wt %.6. A composition comprising:(i) 2,3-dichloro-3,3-difluoropropene (1233xf); and(ii) at least one or more organic compounds selected from 1,2-dichloro-3,3,3-trifluoropropene (1223xd), trichlorofluoropropene (1231) isomers, 2-chloro-1,1,1,2-tetrafluoropropane (244bb) and unreacted 1,1,2,3-tetrachloropropene (1230xa), 2,3,3,3-tetrachloropropene (1230xf) and 1,1,1,2,3-pentachloropropane (240db).7. The composition of further comprising HCl.8. The composition of further comprising HF. The present invention relates to a process for preparing fluorinated organic compounds, more particularly to a process for preparing fluorinated olefins, and even more particularly to a process for producing 2,3,3,3-tetrafluoropropene (HFO-1234yf).Hydrofluoroolefins (HFOs), such as ...

E-1-CHLORO-3,3,3-TRIFLUOROPROPENE PRODUCTION PROCESS FROM 1,1,3,3-TETRACHLOROPROPENE

A production process for the production of E-1-chloro-3,3,3-trifluoropropene, the process including at least one stage during which 1,3,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase, in the absence of a catalyst, with an HF/1,1,3,3- tetrachloropropene molar ratio between 3 and 20 inclusive, at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive. 1. A production process for the production of E-1-chloro-3 ,3 ,3-trifluoropropene , the process comprising at least one stage during which 1 ,3 ,3 ,3- tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase , in the absence of a catalyst , with an HF/1 ,1 ,3 ,3- tetrachloropropene molar ratio between 3 and 20 inclusive , at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive.2. A production process for the production of E-1-chloro-3 ,3 ,3-trifluoropropene , the process comprising:(i) at least one stage during which 1,1,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase in a reactor equipped with a drain and an effluent outlet;(ii) at least one stage for treating the effluent from the reactor in order to provide a flow A that comprises E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene and a flow B that comprises at least 50% HF in weight;(iii) at least one stage for recovering the hydrochloric acid from flow A, the hydrochloric acid being in flow C and flow D that includes E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene;(iv) at least one stage for purifying flow D from stage (iii) in order to purify the E-1233zd to a level higher than or equal to 98% in weight.3. The production process of claim 2 , the process comprises a drainage stage claim 2 , wherein drainage collected in the reactor drain is claim 2 , after treatment claim 2 , recycled back to the ...

Process for manufacture of 2-chloro-1,1,1-trifluoropropene

The present invention pertains to a novel process of manufacturing the compound 2,3,3,3-tetrafluoropropene (1234yf). The compound 1234yf is the newest refrigerant with zero OPD (Ozone Depleting Potential) and zero GWP (Global Warming Potential). Thus, the invention relates to a process, involving a carbene generation route, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), and optionally of the compound 2-chloro-1,1,1-trifluoropropene (1233xf) via carbene route and compound 243db (2,3-dichloro-1,1,1-trifluoropropane). The invention also relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), wherein the compound 243db (2,3-dichloro-1,1,1-trifluoropropane) serves as a starting material, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf). Further, the invention relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), and of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), the initial starting materials are selected from the group consisting of com-pound 123 (2,2-dichloro-1,1,1-trifluoroethane), compound 124 (2-chloro-1,1,1,2-tetrafluoroethane), and compound 125 (pentafluoroethane).

Process for manufacture of 2,3,3,3-tetrafluoropropene

The present invention pertains to a novel process of manufacturing the compound 2,3,3,3-tetrafluoropropene (1234yf). The compound 1234yf is the newest refrigerant with zero OPD (Ozone Depleting Potential) and zero GWP (Global Warming Potential). Thus, the invention relates to a process, involving a carbene generation route, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), and optionally of the compound 2-chloro-1,1,1-trifluoropropene (1233xf) via carbene route and compound 243db (2,3-dichloro-1,1,1-trifluoropropane). The invention also relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), wherein the compound 243db (2,3-dichloro-1,1,1-trifluoropropane) serves as a starting material, for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf). Further, the invention relates to a process for the manufacture of the compound 2,3,3,3-tetrafluoropropene (1234yf), and of the compound 243db (2,3-dichloro-1,1,1-trifluoropropane), the initial starting materials are selected from the group consisting of com-pound 123 (2,2-dichloro-1,1,1-trifluoroethane), compound 124 (2-chloro-1,1,1,2-tetrafluoroethane), and compound 125 (pentafluoroethane).

Method for Producing 1,2-Dichloro-3,3,3-Trifluoropropene

A method for producing 1,2-dichloro-3,3,3-trifluoropropene according to the present invention includes the step of reacting 1,1,2,3,3-pentachloropropene with a fluorinating agent where hydrogen fluoride is used as the fluorinating agent. 135.-. (canceled)36. A method for producing 1 ,2-dichloro-3 ,3 ,3-trifluoropropene by fluorinating 1 ,1 ,2 ,3 ,3-pentachloropropene by a reaction with a fluorinating agent , wherein hydrogen fluoride is used as the fluorinating agent.37. The method according to claim 36 , wherein the reaction is conducted in a liquid phase.38. The method according to claim 36 , wherein the reaction is conducted in a gas phase.39. The method according to claim 36 , wherein usage of the hydrogen fluoride is 3 to 40 mol relative to 1 mol of 1 claim 36 ,1 claim 36 ,2 claim 36 ,3 claim 36 ,3-pentachloropropene.40. The method according to claim 37 , wherein the reaction is conducted at 100 to 200° C.41. The method according to claim 37 , wherein the reaction is conducted at 140 to 180° C.42. The method according to claim 38 , wherein the reaction is conducted at 160 to 600° C.43. The method according to claim 36 , wherein the reaction is conducted in the absence or presence of catalyst.44. The method according to claim 43 , wherein the reaction is conducted by using a catalyst that is a metal oxide claim 43 , a metal fluoride or a metal compound-supported catalyst and that the catalyst is optionally subjected to a fluorination treatment to be used in the reaction.45. The method according to claim 36 , wherein the reaction is conducted in the presence of at least one selected from the group consisting of chlorine claim 36 , oxygen and air.46. The method according to claim 36 , wherein the reaction is conducted in the absence of solvent.47. The method according to claim 36 , wherein 1 claim 36 ,2 claim 36 ,3-trichloro-3 claim 36 ,3-difluoropropene claim 36 , together with 1 claim 36 ,2-dichloro-3 claim 36 ,3 claim 36 ,3-trifluoropropene claim 36 , is formed ...

PROCESS FOR PRODUCING 1-CHLORO-3,3,3-TRIFLUOROPROPENE IN AN IONIC LIQUID

This invention relates to methods and systems for producing hydrochlorofluoro-olefins, particularly 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) by the fluorination of a starting material selected from the group consisting of 1,1,1,3,3-pentachloropropane (HCC-240fa), 1,1,3,3-tetrachloropropene, and 1,1,1,3-tetrachloropropene, alone or in combination, in an ionic liquid. 1. A process for the formation of 1-chloro-3 ,3 ,3-trifluoropropene (HCFO-1233zd) comprising reacting a starting material selected from the group consisting of 1 ,1 ,1 ,3 ,3-pentachloropropane (HCC-240fa) , 1 ,1 ,3 ,3-tetrachloropropene , and 1 ,1 ,1 ,3-tetrachloropropene , alone or in combination , with hydrogen fluoride in a liquid phase reactor in the presence of an ionic liquid.2. The process of claim 1 , wherein the starting material comprises 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane (HCC-240fa).3. The process of claim 1 , wherein the starting material comprises 1 claim 1 ,1 claim 1 ,3 claim 1 ,3-tetrachloropropene.4. The process of claim 1 , wherein the starting material comprises 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-tetrachloropropene.5. The process of claim 1 , wherein the starting material comprises a mixture of two or three of the starting materials selected from the group consisting of 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloro-propane (HCC-240fa) claim 1 , 1 claim 1 ,1 claim 1 ,3 claim 1 ,3-tetrachloropropene claim 1 , and 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-tetrachloro-propene.6. The process of claim 1 , wherein the hydrogen fluoride is anhydrous.7. The process of claim 1 , wherein the ionic liquid comprises an anion selected from the group consisting of I claim 1 , Br claim 1 , Cl claim 1 , F claim 1 , (HF)F claim 1 , wherein n=1.0-4.0 claim 1 , and combinations thereof.8. The process of claim 7 , wherein the anions in the ionic liquid are externally introduced into the process.9. The process of claim 7 , wherein the anions in the ionic liquid are in ...

E-1-CHLORO-3,3,3-TRIFLUOROPROPENE PRODUCTION PROCESS FROM 1,1,3,3-TETRACHLOROPROPENE

A production process for the production of E-1-chloro-3,3,3-trifluoropropene, the process including at least one stage during which 1,3,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase, in the absence of a catalyst, with an HF/1,1,3,3-tetrachloropropene molar ratio between 3 and 20 inclusive, at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive. 120-. (canceled)21. A production process for the production of E-1-chloro-3 ,3 ,3-trifluoropropene , the process comprising:(i) at least one stage during which 1,1,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase in a reactor equipped with a drain and an effluent outlet;(ii) at least one stage for treating the effluent from the reactor in order to provide a flow A that comprises E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene and a flow B that comprises at least 50% HF in weight;(iii) at least one stage for recovering the hydrochloric acid from flow A, the hydrochloric acid being in flow C and flow D that includes E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene;(iv) at least one stage for purifying flow D from stage (iii) in order to purify the E-1233zd to a level higher than or equal to 98% in weight.22. The production process of claim 21 , the process comprises a drainage stage claim 21 , wherein drainage collected in the reactor drain is claim 21 , after treatment claim 21 , recycled back to the reactor.23. The production process of claim 21 , wherein before the purification stage (iv) claim 21 , the flow D from stage (iii) is subjected to at least one separation phase in order to provide a flow E that comprises at least 50% HF in weight that can be recycled to the reactor and a flow F that comprises E-1-chloro-3 claim 21 ,3 claim 21 ,3-trifluoropropene claim 21 , HCl claim 21 , HF and Z-1-chloro-3 claim 21 ,3 claim 21 ,3- ...

Process for Purifying (Hydro)Fluoroalkenes

The invention relates to a process for removing one or more undesired (hydro)halocarbon compounds from a (hydro)fluoroalkene, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminium-containing absorbent, activated carbon, or a mixture thereof.

Method for producing trans-1-chloro-3,3,3-trifluoropropene

A method for producing 1-chloro-3,3,3-trifluoropropene efficiently from an intermediate product having a low reactivity is provided. A method for producing trans-1-chloro-3,3,3-trifluoropropene comprising reacting a halogenated hydrocarbon compound having 3 carbon atoms represented by Formula (1) shown below in a gas phase with hydrogen fluoride in the presence of chlorine is provided. C 3 H X Cl Y F Z (1) wherein X is 2 or 3; and when X=2, Y is an integer from 1 to 4, Z is an integer from 0 to 3, and Y+Z=4; and when X=3, Y is an integer from 1 to 5, Z is an integer from 0 to 4, and Y+Z=5; provided that Formula (1) shown above represents a halogenated hydrocarbon compound having 3 carbon atoms excluding trans-1-chloro-3,3,3-trifluoropropene.

PROCESS FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE

The present invention relates to a process for the gas-phase production of 2,3,3,3-tetrafluoropropene, comprising the steps: i) providing a composition A comprising 2-chloro-3,3,3-trifluoropropene and/or 2,3-dichloro-1,1,1-trifluoropropane and/or 2-chloro-1,1,1,2-tetrafluoropropane or a composition B comprising 1,1,1,2,2-pentafluoropropane and/or 1,1,1,2,3-pentafluoropropane; ii) placing said composition A in contact with hydrofluoric acid in the presence of a catalytic composition comprising a chromium-based catalyst or placing said composition B in contact with a catalytic composition comprising a chromium-based catalyst to produce a composition C comprising 2,3,3,3-tetrafluoropropene, characterized in that step ii) is performed at a temperature of between 310° C. and 450° C. and in that the temperature of step ii) is controlled so as not to exceed 450° C.; and when said catalyst is deactivated, the temperature of step ii) is increased in increments from 0.5° C. to 20° C. on condition that the temperature does not exceed 450° C. 17-. (canceled)8. A process for the gas-phase production of 2 ,3 ,3 ,3-tetrafluoropropene , comprising the steps:i. providing a composition A comprising 2-chloro-3,3,3-trifluoropropene and/or 2,3-dichloro-1,1,1-trifluoropropane and/or 2-chloro-1,1,1,2-tetrafluoropropane or a composition B comprising 1,1,1,2,2-pentafluoropropane and/or 1,1,1,2,3-pentafluoropropane;ii. placing said composition A in contact with hydrofluoric acid in the presence of a catalytic composition comprising a chromium-based catalyst or placing said composition B in contact with a catalytic composition comprising a chromium-based catalyst to produce a composition C comprising 2,3,3,3-tetrafluoropropene, wherein step ii) is performed at a temperature of between 310° C. and 450° C. and the temperature of step ii) is controlled so as not to exceed 450° C.; and when said catalyst is deactivated, the temperature of step ii) is increased in increments from 0.5° C. to 20° C. ...

Continuous low-temperature process to produce trans-1-chloro-3,3,3-trifluoropropene

Disclosed is process for the production of (E) 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)) by conducting a continuous reaction without the use of a catalyst. Also disclosed is an integrated system including one or more reactors for producing hydrofluoro olefins, particularly 1233zd(E). The manufacturing process includes six major unit operations: (1) a fluorination reaction of HCC-240fa (in continuous or semi-batch mode) using HF with simultaneous removal of by-product HCl and the product 1233zd(E); (2) recycle of unreacted HCC-240fa and HF together with under-fluorinated by-products back to (1); (3) separation and purification of by-product HCl; (4) separation of excess HF back to (1); (5) purification of final product, 1233zd(E); and (6) isomerization of by-product 1233zd(Z) to 1233zd(E) to maximize the process yield.

PROCESS FOR THE MANUFACTURE OF 1,1,1,3,3-PENTACHLOROPROPANE

A process for the manufacture of haloalkanes, or more particularly to a process for the manufacture of 1,1,1,3,3-pentachloropropane (HCC-240fa) and/or 1,1,1,3-tetrachloropropane (HCC-250fb). The process includes (a) mixing a catalyst, co-catalyst and a haloalkane starting material under conditions suitable to produce a homogeneous mixture; (b) reacting the homogeneous mixture with a haloalkene and/or alkene starting material under conditions suitable to produce a haloalkane product stream; and (c) recovering a haloalkane product from said product stream. 1. A process for preparing a haloalkane comprising:(a) mixing a catalyst, co-catalyst and a haloalkane starting material under conditions suitable to produce a homogeneous mixture;(b) reacting the homogeneous mixture with a haloalkene starting material, an alkene starting material or both a haloalkene starting material and an alkene starting material under conditions suitable to produce a haloalkane product stream; and(c) recovering a haloalkane product from said product stream.2. The process of wherein said mixture comprises a substantially solid-free mixture.3. The process of wherein said haloalkane product comprises 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachlorobutane claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-tetrachloropropane or a combination thereof.4. The process of wherein said haloalkane starting material comprises carbon tetrachloride.5. The process of wherein said haloalkene starting material comprises vinyl chloride claim 1 , 2-chloro-1-propene or a combination thereof.6. The process of wherein said alkene starting material comprises ethylene.7. The process of wherein said catalyst comprises CuCl and said co-catalyst comprises CHCN claim 1 , t-Bu-NH claim 1 , n-Bu-NH claim 1 , ethanol-amine claim 1 , pyridine claim 1 , sec-Bu-NH claim 1 , benzyl-NH claim 1 , n-BuN or combinations thereof.8. The process of wherein ...

HYDROFLUORINATION OF 1233xf TO 244bb BY SbF5

The disclosure relates to a method for hydrofluorination of an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCHXCFYZ, wherein X, Y, and Z are independently the same or different and are selected from the group consisting of H, F, Cl, Br, and C 1 -C 6 alkyl which is partially or fully substituted with chloro or fluoro or bromo; and R is a C 1 -C 6 alkyl which is unsubstituted or substituted with chloro or fluoro or bromo, comprising reacting the olefin with HF in the liquid-phase, in the presence of SbF 5 , at a temperature ranging from about −30° C. to about 65° C.

PROCESSES FOR SELECTIVE DEHYDROHALOGENATION OF HALOGENATED ALKANES

Disclosed are processes for producing halogenated olefins, and preferably tetrafluorinated propene(s), from one or more alkanes having both fluorine substituents and non-fluorine substituents, preferably with a high degree of conversion and selectivity. Preferably the process comprises the use of a catalyzed reaction in which the catalyst is selected from the group consisting of activated carbons halogenated mono- and di-valent metal oxides, mono- and di-valent Lewis acid metal halides, zero-valent metals, and combinations of these. 1. A process for the production fluorinated olefin having from three to six carbon atoms , the process comprising exposing a fluorinated and chlorinated alkane having from two to six carbon atoms and a degree of non-fluorine halogen substitution of N and a degree of fluorine substitution of M to conditions effective to convert at least about 20% by weight of said alkane to one or more olefins having a degree of non-fluorine halogen substitution of a N−1 and a degree of fluorine substitution of M.2. The process of wherein said fluorinated olefins has the same number of carbon atoms as said alkane.3. The process of wherein said exposing step comprises conditions effective to convert at least about 50% by weight of said alkane to one or more olefins having a degree of non-fluorine halogen substitution of a N−1 and a degree of fluorine substitution of M.4. The process of wherein said exposing step comprises conditions effective to convert at least about 70% by weight of said alkane to one or more olefins having a degree of non-fluorine halogen substitution of a N−1 and a degree of fluorine substitution of M.5. The process of wherein said exposing step comprises conditions effective to convert at least about 80% by weight of said alkane to one or more olefins having a degree of non-fluorine halogen substitution of a N−1 and a degree of fluorine substitution of M.6. The process of wherein said exposing step comprises conditions effective to ...

METHOD FOR PRODUCING HYDROCHLOROFLUOROCARBON AND/OR HYDROFLUOROCARBON

Provided is a method for producing HCFC and/or HFC by subjecting a halogenated hydrocarbon and anhydrous hydrogen fluoride to a fluorination reaction in the presence of a catalyst, whereby efficient production can be achieved, without the need to stop the production every time catalytic activity is regenerated or recovered, and without making facilities excessive. Provided as a solution therefor is a method comprising 1. A method for producing hydrochlorofluorocarbon (HCFC) and/or hydrofluorocarbon (HFC) , the method comprising:(A) subjecting a halogenated hydrocarbon to a fluorination reaction using anhydrous hydrogen fluoride in at least two reactors each in the presence of a catalyst to thereby obtain HCFC and/or HFC; and(B) while halting the reaction in at least one of the reactors, obtaining HCFC and/or HFC by the reaction in at least one other reactor.2. The method according to claim 1 , wherein in step (B) claim 1 , catalytic activity is regenerated or recovered in the at least one reactor in which the reaction is halted.3. The method according to claim 1 , further comprising the following step (C):(C) collecting the HCFC and/or HFC obtained in step (A) using a recovering device connected to the at least two reactors.4. The method according to claim 3 , wherein in step (C) claim 3 , a composition containing the HCFC and/or HFC obtained in step (A) is separated from a composition containing an unreacted halogenated hydrocarbon and/or unreacted anhydrous hydrogen fluoride.5. The method according to claim 3 , wherein in step (C) claim 3 , the recovering device is at least one recovering device selected from the group consisting of distillation columns claim 3 , liquid separation devices claim 3 , and flash columns.6. The method according to claim 3 , further comprising the following step (D):(D) recycling the unreacted compounds obtained in step (C) as raw material compounds in the reactors.7. A method for producing HCFC and/or HFC claim 3 , the method ...

Manufacturing method of 1,2-dichlorohexafluorocyclopentene

Disclosed is a manufacturing method of 1,2-dichlorohexafluorocyclopentene. The first reaction uses dicyclopentadiene as a starting material and nitrogen gas or another inert gas as a diluting agent in a gas-phase thermal cracking reaction to obtain cyclopentadiene. The second reaction uses cyclopentadiene as a starting material in a liquid phase chlorination reaction with chlorine gas to obtain 1,2,3,4-tetrachlorocyclopentane. The third reaction uses 1,2,3,4-tetrachlorocyclopentane as a starting material in a gas-phase chlorination and fluorination reaction with hydrogen fluoride and chlorine gas in the presence of a chromium-based catalyst to obtain 1,2-dichlorohexafluorocyclopentene. The method uses easily acquired starting material and a stable fluorination catalyst, provides a high yield for a target product, and is applicable for large-scale continuous gas-phase production of 1,2-dichlorohexafluorocyclopentene.

COMPOSITIONS CONTAINING 1,1,1,3,3-PENTACHLOROPROPANE

The invention first relates to a composition comprising at least 99 wt. % of 1,1,1,3,3ºpentachloropropane and at least one compound selected from a list of additional compounds consisting of dichloropropanes, trichloropropanes, tetrachloropropanes, pentachloropropanes different from 1,1,1,3,3ºpentachloropropane, hexachloropropanes, heptachloropropanes, chloropropenes, dichloropropenes, trichloropropenes, tetrachloropropenes, pentachloropropenes and hexachloropropene, the weight content of said compound in the composition being lower than or equal to 500 ppm. 1. A composition comprising 99% by weight 1 ,1 ,1 ,3 ,3ºpentachloropropane (240fa) and one or more compound selected from the group consisting of Fº240da , Fº240db , r 240aa , and Fº240ab , said one or more compound being present in the composition in a weight content of less than 500 ppm.2. The composition of claim 1 , further comprising two or more compounds selected from the group consisting of Fº240da claim 1 , Fº240db claim 1 , Fº240aa claim 1 , and Fº240ab claim 1 , each of said two or more compounds being present in the composition in a weight content of less than 500 ppm.3. The composition of claim 2 , wherein the collective weight content of the two or more compounds is less than 500 ppm.4. The composition of claim 1 , wherein said one or more compound is present in the composition in a weight content of less than or equal to 250 ppm.5. The composition of claim 1 , further comprising one or more additional compounds selected from the group consisting of dichloropropanes claim 1 , trichloropropanes claim 1 , tetrachloropropanes claim 1 , hexachloropropanes claim 1 , heptachloropropanes claim 1 , chloropropenes claim 1 , dichloropropenes claim 1 , trichloropropenes claim 1 , tetrachloropropenes claim 1 , pentachloropropenes and hexachloropropene claim 1 , each of the one or more additional compounds being present in the composition in a weight content of less than or equal to 500 ppm.6. The composition of ...

COMPOSITIONS COMPRISING 1,1,1,2,3 PENTACHLOROPROPANE

The invention relates to a composition comprising at least 99% by weight of 1,1,1,2,3-pentachloropropane, and comprising at least one compound chosen from a list of additional compounds consisting of trichloropropanes, tetrachloropropanes, pentachloropropanes other than 1,1,1,2,3-pentachloropropane, hexachloropropanes, heptachloropropanes, dichloropropenes, trichloropropenes, tetrachloropropenes, pentachloropropenes and hexachloropropene, said compound being present in the composition in a weight content of less than or equal to 500 ppm. 1. A composition comprising at least 99 wt % of 1 ,1 ,1 ,2 ,3-pentachloropropane (240db) and at least one compound selected from the group consisting of 250fb , 1240za and 1240zf , wherein the content of said at least one compound is lower than 250 ppm.2. The composition of claim 1 , wherein the content of said at least one compound is lower than 100 ppm.3. The composition of claim 1 , wherein the content of said at least one compound is lower than 50 ppm.4. The composition of claim 1 , further comprising at least two compounds selected from the group consisting of 250fb claim 1 , 1240za and 1240zf claim 1 , wherein the content of each of said at least two compounds is lower than 250 ppm.5. The composition of claim 1 , wherein the content of each of said at least two compounds is lower than 100 ppm.6. The composition of claim 1 , wherein the content of each of said at least two compounds is lower than 50 ppm.7. The composition of claim 1 , which comprises at least 99.5% by weight claim 1 , of 240db. This application is a continuation of application Ser. No. 15/518,605, filed on Apr. 12, 2017, which is a National Stage application of International Application No. PCT/FR2015/052692, filed on Oct. 7, 2015, which claims the benefit of French Patent Application No. 1459926, filed on Oct. 16, 2014.The present invention relates to compositions based on F-240db (1,1,1,2,3-pentachloropropane) and also to the use thereof especially for ...

PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE

The present invention provides a process of manufacture of 2,3,3,3-tetrafluoropropene by fluorination of very high purity 1,1,1,2,3-pentachloropropane (HCC-240db) into product 2,3,3,3-tetrafluoropropene (HFO-1234yf), the process comprising the following steps: —step 3 of chlorination of 1,1,3-trichloropropene to produce 1,1,1,2,3-pentachloropropane, comprising: 3-a) contacting the 1,1,3-trichloropropene feedstock with chlorine in a reaction zone to produce a reaction mixture containing 1,1,1,2,3-pentachloropropane and 1,1,3-trichloropropene, the reaction zone being different from the dehydrochlorination zone, and 3-b) treating the reaction mixture obtained in step 3-a) to obtain a 1,1,1,2,3-pentachloropropane (HCC-240db) feedstock; —step 4 of producing 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprising: 4-a) reacting the 1,1,1,2,3-pentachloropropane (HCC-240db) feedstock with HF in the presence or absence of catalyst to produce a reaction mixture comprising at least one compound chosen from HCI, HF, 1,1,1,2,2-pentafluoropropane (HFC-245cb), 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and 2,3,3,3-tetrafluoropropene (HFO-1234yf). 1. A process for preparing a highly pure 2 ,3 ,3 ,3-tetrafluoropropene product comprising the following steps: 1-a) providing a reaction mixture comprising ethylene, carbon tetrachloride and a catalyst in a principal alkylation zone to produce 1,1,1,3-tetrachloropropane in the reaction mixture, and', '1-b) treating the reaction mixture obtained in step 1-a) to obtain a 1,1,1,3-tetrachloropropane feedstock;, 'optionally a step 1 of telomerisation to produce 1,1,1,3-tetrachloropropane feedstock, comprising 2-a) contacting the 1,1,1,3-tetrachloropropane feedstock with a catalyst in a dehydrochlorination zone to produce a reaction mixture comprising 1,1,1,3-tetrachloropropane and 1,1,3-trichloropropene, and', '2-b) treating the reaction mixture obtained in step 2-a) to obtain a 1,1,3-trichloropropene feedstock;, 'optionally a step 2 of ...

Method for preparing 1,2-difluoroethylene and/or 1,1,2-trifluoroethane

This invention relates to a method for preparing 1,2-difluoroethylene and/or 1,1,2-trifluoroethane, comprising a step of performing at least one fluorination reaction by bringing at least one halide selected from the group consisting of haloethanes represented by general formula (1) CHX1X2CH2X3 (wherein X1, X2, and X3 are the same or different, and represent Cl, Br, or F) and haloethylenes represented by general formula (2) CHX4═CHX5 (wherein X4 and X5 are the same or different, and represent Cl, Br or F, with the proviso that the case in which X4 and X5 are both F is excluded).

METHOD FOR THE PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE

The present invention relates to a process for the production of 2,3,3,3-tetrafluoropropene comprising the stages: 113-. (canceled)15. The process as claimed in claim 14 , wherein stage i) is carried out at a temperature which is lower than the temperature at which stage ii) is carried out; and the difference between the temperature at which stage i) is carried out and the temperature at which stage ii) is carried out is greater than 0.2° C.16. The process as claimed in claim 14 , wherein the temperature at which stage i) is carried out and/or the temperature at which stage ii) is carried out increase(s) as these stages are carried out.17. The process as claimed in claim 14 , wherein the temperature at which stage ii) is carried out remains constant and the temperature at which stage i) is carried out increases as this stage is carried out.18. The process as claimed in claim 14 , wherein the temperature at which stage i) is carried out remains constant and the temperature at which stage ii) is carried out increases as this stage is carried out.19. The process as claimed in claim 14 , wherein the temperature of stage i) and/or of stage ii) is increased incrementally by 0.5° C. to 20° C.20. The process as claimed in claim 14 , wherein stage i) is carried out at a temperature of between 330° C. and 360° C.; and the temperature of stage i) is increased incrementally by 0.5° C. to 20° C. claim 14 , provided that the temperature does not exceed 360° C. and that it remains lower than or equal to the temperature of stage ii).21. The process as claimed in claim 14 , wherein stage ii) is carried out at a temperature of 340° C. to 380° C. and the temperature of stage ii) is increased incrementally by 0.5° C. to 20° C. claim 14 , provided that the temperature does not exceed 380° C.22. The process as claimed in claim 14 , wherein stage ii) is carried out in the presence of a catalyst at a temperature of 340° C. to 380° C. and the temperature of stage ii) is increased ...

PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE

The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst. 1. Process of catalytic fluorination in gas phase of product 1 ,1 ,1 ,2 ,3-pentachloropropane and/or 1 ,1 ,2 ,2 ,3-pentachloropropane into product 2 ,3 ,3 ,3-tetrafluoropropene.2. Process according to claim 1 , carried out in a single stage claim 1 , preferably in one reactor claim 1 , more preferably in one catalytic bed.3. Process according to or claim 1 , wherein the product 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is present at a concentration of at least 1% claim 1 , preferably more than 2% claim 1 , more preferably more than 3%.4. Process according to any one of to claim 1 , wherein said catalyst is a chromium catalyst claim 1 , supported or unsupported claim 1 , preferably unsupported.5. Process according to any one of to claim 1 , wherein said catalyst further comprises a co-catalyst selected from Ni claim 1 , Co claim 1 , Zn claim 1 , Mn claim 1 , Mg or mixtures thereof claim 1 , preferably nickel or magnesium claim 1 , and wherein said co-catalyst is preferably present in an amount from about 1-10 wt % of said fluorination catalyst.6. Process according to any one of to claim 1 , carried claim 1 , out in the presence of a catalyst comprising Ni—Cr claim 1 , preferably supported.7. Process according to any one of to claim 1 , wherein said catalyst is supported on a support selected from fluorinated alumina claim 1 , fluorinated chromia claim 1 , fluorinated activated carbon or graphite carbon.8. Process according to any one of to claim 1 , wherein said fluorination catalyst is activated with a fluorine-containing compound claim 1 , preferably hydrogen fluoride.9. Process according to one of the to claim 1 , in which the 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane contains up to 40 mol % of isomer 1 claim 1 ...

PROCESS FOR PRODUCING FLUORINE-CONTAINING OLEFIN

The present invention provides a process for producing a fluoroolefin by reacting, in a gas phase, a fluorinating agent and a chlorine-containing alkene or a chlorine-containing alkane in the presence of at least one catalyst selected from the group consisting of chromium oxide, at least part of which is crystallized, and fluorinated chromium oxide obtained by fluorinating the chromium oxide. According to the present process, a target fluoroolefin can be obtained at a high conversion rate of the starting material and with high selectivity. 1. A process for producing a fluoroolefin comprising:reacting a fluorinating agent and a chlorine-containing compound in a gas phase in the presence of at least one catalyst selected from the group consisting of chromium oxide, at least part of which is crystallized, and fluorinated chromium oxide obtained by fluorinating the chromium oxide,{'sub': 3', '2', 'n', '2', '3', '2', 'n', '2', '2', '3', '2', 'n', '2', '3', '2', 'n', '2', '2, 'the chlorine-containing compound being at least one compound selected from the group consisting of a chlorine-containing alkane represented by formula (1): CX(CX)CClYCHZ, wherein each X is independently F or Cl, and Y is H or F, and when Y is H, Z is Cl or F, and when Y is F, Z is H, and n is an integer of 0 to 2; a chlorine-containing alkane represented by formula (2): CX(CX)CHCHX, wherein each X is independently F or Cl, at least one X is Cl, and n is an integer of 0 to 2; a chlorine-containing alkene represented by formula (3): CX(CX)CCl═CH, wherein each X is independently F or Cl, and n is an integer of 0 to 2; a chlorine-containing alkene represented by formula (4): CX(CX)CH═CHX, wherein each X is independently F or Cl, at least one X is Cl, and n is an integer of 0 to 2; and a chlorine-containing alkene represented by formula (5): CHXCCl═CX, wherein each X is independently F or Cl,'}{'sub': 3', '2', 'n, 'the fluoroolefin to be obtained being a compound represented by formula (6): CF(CF)CA=CHB, ...

METHOD FOR CO-PRODUCING 2,3,3,3-TETRAFLUOROPROPENE AND TRANS-1,3,3,3-TETRAFLUOROPROPENE

Disclosed is a method for co-producing 2,3,3,3-tetrafluoropropene and trans-1,3,3,3-tetrafluoropropene, comprising the following steps: preheating a mixture of 1,1,1,2,2-pentachloropropane and 1,1,1,3,3-pentachloropropane together with anhydrous hydrogen fluoride and simultaneously introducing into a first reactor to react in the presence of a catalyst LaO—CrOto obtain a first reactor product; directly introducing the first reactor product into a second reactor without separation, and carrying out a catalytic fluorination reaction in the presence of a catalyst GaO—YO—CrOto obtain a second reactor product; and separating the second reactor product to obtain the products of 2,3,3,3-tetrafluoropropene and trans-1,3,3,3-tetrafluoropropene. The invention has such advantages that the process is simple and less equipment investment is required; used catalysts have good activity, high selectivity and long total life; and the ratio of the two products can be flexibly adjusted according to market demands. 1. A method for co-producing 2 ,3 ,3 ,3-tetrafluoropropene and trans-1 ,3 ,3 ,3-tetrafluoropropene , comprising following steps of:{'sub': 2', '3', '2', '3, '(1) preheating a mixture of 1,1,1,2,2-pentachloropropane and 1,1,1,3,3-pentachloropropane together with anhydrous hydrogen fluoride and simultaneously introducing into a first reactor to react in the presence of a catalyst LaO—CrOat a reaction temperature of 200-350° C., with a contact time of 1-20 s to obtain a first reactor product, wherein a molar ratio of the anhydrous hydrogen fluoride to the mixture of 1,1,1,2,2-pentachloropropane and 1,1,1,3,3-pentachloropropane is 6-18:1;'}{'sub': 2', '3', '2', '3', '2', '3, '(2) directly introducing the first reactor product obtained in the step (1) into a second reactor without separation, and carrying out a catalytic fluorination reaction in the presence of a catalyst GaO—YO—CrOat a reaction temperature of 250-400° C., with a contact time of 1-35 s to obtain a second reactor ...

METHOD FOR PRODUCING FLUORINATED COMPOUNDS

The invention relates to a method for producing a fluorinated compound, comprising: the provision of a gaseous flow comprising hydrofluoric acid; the provision of at least one liquid flow of a chlorinated compound and the vapourisation thereof by mixing with said gaseous flow, the resulting mixture being a gaseous mixture; and the catalytic reaction of the chlorinated compound with hydrofluoric acid in a gaseous phase and the collection of a product flow. The invention also relates to a facility for carrying out said method. 116.-. (canceled)17. An installation for producing a fluoro compound , comprising:a pipe for supplying a liquid stream of chloro compound;a pipe for supplying a gas stream comprising hydrofluoric acid;a mixing and vaporizing unit fed by the pipe for supplying the liquid stream of chloro compound and the pipe for supplying the gas stream comprising hydrofluoric acid;a pipe for collecting a gas mixture at the outlet of the mixing and vaporizing unit;a catalytic fluorination reactor fed by the pipe for collecting the gas mixture; anda pipe for collecting the product stream at the outlet of the catalytic fluorination reactor.18. The installation as claimed in claim 17 , in which:the chloro compound comprises a chlorocarbon, a chlorohydrocarbon, a chlorofluorocarbon, a hydrochlorofluorocarbon, a chloroolefin, a hydrochloroolefin or a hydrochlorofluoroolefin; and in which the fluoro compound comprises a fluorocarbon, a fluorohydrocarbon, a chlorofluorocarbon, a hydrochlorofluorocarbon, a fluoroolefin, a hydrofluoroolefin or a hydrochlorofluoroolefin.19. The installation as claimed in claim 17 , in which the mixing and vaporizing unit) is a static mixer.20. The installation as claimed in claim 17 , comprising:at least one separating unit fed by the product stream collection pipe; anda fluoro compound collection pipe and a recycling stream collection pipe at the outlet of the separating unit(s).21. The installation as claimed in claim 20 , in which the ...

METHOD FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE

This invention provides a method for producing 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, in two or three reaction steps, using at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene as a starting material, the reaction products of at least two of the steps being supplied to the same distillation apparatus to subject the products to a separation operation simultaneously. With this method, 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, can be efficiently produced with reduced energy and equipment costs in an economically advantageous manner. 1. A method for producing 2 ,3 ,3 ,3-tetrafluoropropene , comprising the reaction steps of:(1) obtaining 2-chloro-3,3,3-trifluoropropene by reacting a fluorinating agent with at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene; and(2) obtaining 2,3,3,3-tetrafluoropropene by reacting the 2-chloro-3,3,3-trifluoropropene with anhydrous hydrogen fluoride in a gas phase in the presence of a fluorination catalyst while heating,the method further comprising the step of supplying the products of reaction step (1) and the products of reaction step (2) to the same distillation apparatus to separate the products into a hydrogen chloride-containing fraction and a fraction substantially free of hydrogen chloride.2. A method for producing 2 ,3 ,3 ,3-tetrafluoropropene , comprising the reaction steps of:(1) obtaining 2-chloro-3,3,3-trifluoropropene by reacting a fluorinating agent with at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3- ...

COMPOSITIONS BASED ON 1,1,3,3-TETRACHLOROPROPENE

The present invention relates to compositions based on F-1230za (1,1,3,3-tetrachloropropene), or on a mixture consisting of F-1230za and F-1230zd (1,3,3,3-tetrachloropropene), the manufacture thereof, and also the use thereof in particular for the production of F-1233zdE (trans-1-chloro-3,3,3-trifluoropropene), F-1234zeE (trans-1,3,3,3-tetrafluoropropene), and/or F-245fa (1,1,1,3,3-pentafluoropropane). 1. A composition comprising at least 99.5% by weight of 1 ,1 ,3 ,3-tetrachloropropene (F-1230za) , or a mixture of 1 ,1 ,3 ,3-tetrachloropropene and of 1 ,3 ,3 ,3-tetrachloropropene (F-1230zd) , and at least one additional compound chosen from a list of compounds consisting of pentachloropropanes , tetrachloropropenes other than F-1230za and F-1230zd , chlorobutenes , chlorobutanes and oxygenated compounds , said compound and/or the total amount of said compounds being present in the composition in a content of less than or equal to 0.5% by weight.2. The composition as claimed in claim 1 , in which said additional compound represents a content of less than or equal to 1000 ppm claim 1 , in the composition.3. The composition as claimed in claim 2 , in which said additional compound is or are chosen from 1 claim 2 ,1 claim 2 ,1 claim 2 ,3 claim 2 ,3-pentachloropropane (F-240fa) claim 2 , 1 claim 2 ,1 claim 2 ,1 claim 2 ,2 claim 2 ,3-pentachloropropane (F-240db) and 1 claim 2 ,1 claim 2 ,2 claim 2 ,3-tetrachloropropene (F-1230xa).4. A process for manufacturing the composition as claimed in claim 1 , comprising the following steps:reaction of carbon tetrachloride with vinyl chloride to produce 1,1,1,3,3-pentachloropropane (F-240fa);dehydrochlorination of F-240fa to obtain 1,1,3,3-tetrachloropropene (F-1230za);one or more steps for separating out the F-1230za.5. A process for manufacturing the composition as claimed in claim 1 , comprising the following steps:reaction of carbon tetrachloride with ethylene to produce 1,1,1,3-tetrachloropropane (F-250fb);chlorination of F- ...

PROCESS FOR MANUFACTURING TETRAFLUOROPROPENE

A process for manufacturing tetrafluoropropene, including, alternately: at least one step of reacting a chlorinated compound with hydrofluoric acid in the gas phase, in the presence of a fluorination catalyst, the proportion of oxygen optionally present being less than 0.05 mol. % relative to the chlorinated compound; a step of regenerating the fluorination catalyst by bringing the fluorination catalyst into contact with a regeneration stream including an oxidizing agent. Also, equipment suitable for carrying out this process. 1. A plant for the manufacture of tetrafluoropropene , comprising at least one gas-phase fluorination reactor comprising a bed of fluorination catalyst , said gas-phase fluorination reactor being configured in order to be fed alternately by:a system for feeding with reaction stream comprising a chlorinated compound and hydrofluoric acid, the proportion of oxygen optionally present in this reaction stream being less than 0.05 mol % with respect to the chlorinated compound; anda system for feeding with regeneration stream comprising an oxidizing agent.2. The plant as claimed in claim 1 , in which the reaction stream is essentially devoid of oxygen.3. The plant as claimed in claim 1 , in which the regeneration stream contains at least 1 mol % of oxygen with respect to the total regeneration stream.4. The plant as claimed in claim 1 , comprising a single reactor configured in order to be fed alternately by the system for feeding with reaction stream and the system for feeding with regeneration stream.5. The plant as claimed in claim 1 , comprising a plurality of reactors claim 1 , each being configured in order to be fed alternately by a system for feeding with reaction stream and a system for feeding with regeneration stream.6. The plant as claimed in claim 5 , configured so that claim 5 , when a reactor is fed by the system for feeding with reaction stream claim 5 , another reactor is fed by the system for feeding with regeneration stream.7. The ...

PROCESS TO MANUFACTURE 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE (HCFC-244bb)

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-1233x1) with hydrogen fluoride, in a liquid phase reaction in the presence of hydrogen chloride and a liquid phase fluorination catalyst. The hydrogen chloride is added into the reaction from an external source at a pressure of about 100 psig or more. The HCFC-244bb is an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf). 1. A process for the production of 2-chloro-1 ,1 ,1 ,2-tetrafluoropropane which comprises reacting 2-chloro-3 ,3 ,3 ,-trifluoropropene with hydrogen fluoride , in a liquid phase reaction in the presence of hydrogen chloride and a liquid phase fluorination catalyst , wherein the hydrogen chloride is added into the reaction from an external source at a pressure of about 100 psig or more.2. The process of wherein the reacting is conducted in a liquid phase reaction vessel.3. The process of wherein the reacting is conducted continuously.4. The process of wherein the mole ratio of hydrogen fluoride to 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene fed to the reaction ranges from at least 1:1 to about 50:1.5. The process of wherein the mole ratio of hydrogen chloride to 2-choro-3 claim 1 ,3 claim 1 ,3-trifluoropropene fed to the reaction ranges from at least 0.1:1 to about 10:1.6. The process of wherein the liquid phase fluorination catalyst comprises SbCl claim 1 , SbCl claim 1 , SbF claim 1 , SnCl claim 1 , TaCl claim 1 , TiCl claim 1 , NbCl claim 1 , MoCl claim 1 , FeCl claim 1 , CrF claim 1 , CrO claim 1 , a fluorinated species of SbCl claim 1 , a fluorinated species of SbCl claim 1 , a fluorinated species of SnCl claim 1 , a fluorinated species of TaCl claim 1 , a fluorinated species of TiCl claim 1 , a fluorinated species of NbCl claim 1 , a fluorinated species of MoCl claim 1 , a fluorinated species of FeCl claim 1 , a fluorinated species of CrO claim 1 , or ...

Hydrochloric acid purification process

The invention relates to a process for the treatment of a gas stream comprising hydrochloric acid, hydrofluoric acid and fluorinated/oxygenated compounds, in which the gas stream is successively subjected to: a stage of catalytic hydrolysis; a stage of washing with an acid solution; a stage of adsorption of impurities by active charcoal; a stage of adiabatic or isothermal absorption of the hydrochloric acid in an aqueous solution, making it possible to collect hydrochloric acid solution.

Gas-phase catalytic fluorination with chromium catalysts

A process for the fluorination of a chlorinated C3 alkane or alkene compound having at least one chlorine atom into a fluorinated C3 alkane or alkene compound having at least one fluorine atom includes the following steps: a) contacting, in a reactor, the chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound, and b) regenerating the fluorination catalyst used in step a). The step (b) of regenerating the fluorination catalyst comprises (c) the treatment of said fluorination catalyst with an oxidizing agent-containing gas flow to form an oxidized fluorination catalyst, and (d) the treatment of the oxidized fluorination catalyst obtained in step (c) with a gaseous mixture comprising a reducing agent and an inert gas. The catalyst regenerated in step b) is reused in step a) and the reducing agent is selected from C-Chydrohalocarbons. 1. Process for the fluorination of a chlorinated C3 alkane or alkene compound having at least one chlorine atom into a fluorinated C3 alkane or alkene compound having at least one fluorine atom comprising the following steps:a. contacting, in a reactor, the chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound, andb. regenerating the fluorination catalyst used in step a),{'sub': 1', '10, 'wherein the step (b) of regenerating the fluorination catalyst comprises (c) the treatment of said fluorination catalyst with an oxidizing agent-containing gas flow to form an oxidized fluorination catalyst, and (d) the treatment of the oxidized fluorination catalyst obtained in step (c) with a gaseous mixture comprising a reducing agent and an inert gas; the catalyst regenerated in step b) being reused in step a) and the reducing agent being selected from the group consisting of C-Chydrohalocarbons.'}2. Process for the fluorination of a chlorinated C3 alkane or alkene compound having at least one ...

PROCESS FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE

This invention provides a process for producing 2-chloro-3,3,3-trifluoropropene, comprising: reacting anhydrous hydrogen fluoride with at least one chlorine-containing compound selected from the group consisting of chloropropanes and chloropropenes represented by specific formulas in a gas phase in the presence of a chromium atom-containing fluorination catalyst while heating, the reaction being carried out in the presence of molecular chlorine or with a water content in the reaction system of 300 ppm or less. This invention enables suppression of catalyst deterioration and efficient production of 2-chloro-3,3,3-trifluoropropene in a simple and economically advantageous manner on an industrial scale. 1. A process for producing 2-chloro-3 ,3 ,3-trifluoropropene , comprising:{'sub': 2', '2', '2, 'reacting anhydrous hydrogen fluoride with at least one chlorine-containing compound in a gas phase in the presence of a chromium atom-containing fluorination catalyst while heating, the at least one chlorine-containing compound being selected from the group consisting of chloropropanes represented by Formula (1): CXYZCHClCHA, wherein X, Y, and Z are the same or different and each is F or Cl, and A is a halogen atom, chloropropenes represented by Formula (2): CXYZCCl═CH, wherein X, Y, and Z are the same or different and each is F or Cl, and chloropropenes represented by Formula (3): CXY═CClCHA, wherein X and Y are the same or different and each is F or Cl, and A is a halogen atom, and the reaction being carried out in the presence of molecular chlorine.'}2. A process for producing 2-chloro-3 ,3 ,3-trifluoropropene , comprising:{'sub': 2', '2', '2, 'reacting anhydrous hydrogen fluoride with at least one chlorine-containing compound in a gas phase in the presence of a chromium atom-containing fluorination catalyst while heating, the at least one chlorine-containing compound being selected from the group consisting of chloropropanes represented by Formula (1): CXYZCHClCHA, ...

Method for the production and purification of 2,3,3,3-tetrafluoropropene

The invention refers to a process for the production of 2,3,3,3-tetrafluoropropene carried out starting from a starting composition comprising the stages of bringing the starting composition into contact, in the presence of a catalyst, with HF in order to produce a composition A comprising 2,3,3,3-tetrafluoropropene (HFO-1234yf), intermediate products B consisting of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), 1,1,1,2,2-pentafluoropropane (HFC-245cb), and byproducts C consisting of E-1-chloro-3,3,3-trifluoro-1-propene (HCFO-1233zdE), trans-1,3,3,3-tetrafluoro-1-propene (HFO-1234zeE) and 1,1,1,3,3-pentafluoropropane (HFC-245fa); recovery of said composition A and purification of the latter in order to form and recover a first gas stream G 1 comprising HCl, 2,3,3,3-tetrafluoropropene (HFO-1234yf), a part of the unreacted HF, a part of the intermediate products B and a part of the byproducts C; and a stream, which is preferably liquid, L 1 comprising a part of the unreacted HF, a part of the intermediate products B and a part of the byproducts C.

Process for producing 2,3,3,3-tetrafluoropropene

The present invention relates, in part, to the discovery that the presence of moisture in 1,1,2,3-tetrachloropropene (HCO-1230xa) results in catalyst deactivation and accelerated corrosion in the reactor during the fluorination of HCO-1230xa to 2-chloro-3,3,3-trifluoropropene. By substantially removing the moisture, it is shown that the catalyst life is extended and results in improved operation efficiency of the fluorination reaction. Such steps similarly result in an overall improvement in the production of certain hydrofluoroolefins, particularly 2,3,3,3-tetrafluoropropene (HFO-1234yf).

COMPOSITIONS AND METHODS FOR AN INTEGRATED 2,3,3,3-TETRAFLUOROPROPENE MANUFACTURING PROCESS

A method of synthesizing 3,3,3-trifluoropropene including contacting 1,3,3,3-tetrachloropropane, in the vapor phase, at a temperature sufficient to effect dehydrochlorination to form 1,1,3-trichloro-1-propene. The 1,1,3-trichloro-1-propene is isolated and subsequently contacted, in the vapor phase, with hydrogen fluoride in the presence of a fluorination catalyst at a temperature sufficient to effect formation of 3,3,3-trifluoropropene. 1. A method of synthesizing 3 ,3 ,3-trifluoropropene comprising:contacting 1,3,3,3-tetrachloropropane, with a base at a temperature sufficient to effect dehydrochlorination to form 1,1,3-trichloro-1-propene; andcontacting the 1,1,3-trichloro-1-propene, in the vapor phase, with hydrogen fluoride in the presence of a fluorination catalyst at a temperature sufficient to effect formation of 3,3,3-trifluoropropene.2. The method of claim 1 , wherein the base includes sodium hydroxide claim 1 , potassium hydroxide claim 1 , or potassium tert-butoxide.3. The method of further comprising claim 1 , recovering the 1 claim 1 ,1 claim 1 ,3-trichloro-1-propene from the reaction mixture prior to contacting the 1 claim 1 ,1 claim 1 ,3-trichloro-1-propene with hydrogen fluoride.4. The method of further comprising claim 1 , recovering the 3 claim 1 ,3 claim 1 ,3-trifluoropropene from the reaction mixture.5. The method of claim 1 , wherein the temperature sufficient to effect formation of 3 claim 1 ,3 claim 1 ,3-trifluoropropene is between 250° C. and 350° C.6. The method of claim 1 , wherein the fluorination catalyst includes activated carbon claim 1 , alumina claim 1 , chromium oxide claim 1 , oxides of transition metals claim 1 , or metal halides.7. The method of claim 1 , wherein at least a 95 percent selectivity of 3 claim 1 ,3 claim 1 ,3-trifluoropropene is maintained in a continuous reaction for at least 30 hours.8. A method of synthesizing 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene comprising:contacting 1,3,3,3-tetrachloropropane ...

CATALYTIC GAS PHASE FLUORINATION

The invention relates to a fluorination process, alternately comprising reaction stages and regeneration stages, wherein the reaction stages comprise reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound, and the regeneration stages comprise contacting the fluorination catalyst with an oxidizing agent-containing gas flow. 1. A fluorination process , alternately comprising reaction stages and regeneration stages , wherein the reaction stages comprise reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of a fluorination catalyst to produce a fluorinated compound , and the regeneration stages comprise contacting the fluorination catalyst with an oxidizing agent-containing gas flow.2. The fluorination process of claim 1 , comprising a preliminary activation stage which comprises contacting the fluorination catalyst with an oxidizing agent-containing gas flow.3. The process of or claim 1 , wherein the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages is an oxygen-containing gas flow.4. The process of one of to claim 1 , wherein the activation stage and/or the regeneration stages comprise contacting the fluorination catalyst with the oxidizing agent-containing gas flow for at least 2 hours claim 1 , preferably for at least 4 hours claim 1 , more preferably for at least 10 hours claim 1 , and even more preferably for at least 15 hours.5. The process of one of to claim 1 , wherein the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages contains hydrogen fluoride in addition to the oxidizing agent claim 1 , and wherein the proportion of oxidizing agent in the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages is preferably from 2 to 98 mol % claim 1 , and more preferably from 5 to 50 mol % claim 1 , relative to the total amount ...

CATALYTIC GAS PHASE FLUORINATION

The present invention relates to a fluorination process, comprising: 1. A fluorination process , comprising:an activation stage comprising contacting a fluorination catalyst with an oxidizing agent-containing gas flow for at least one hour; andat least one reaction stage comprising reacting a chlorinated compound with hydrogen fluoride in gas phase in the presence of the fluorination catalyst, so as to produce a fluorinated compound.2. The process of claim 1 , comprising a plurality of reaction stages alternating with a plurality of regeneration stages claim 1 , wherein the reaction stages comprise reacting the chlorinated compound with hydrogen fluoride in gas phase in the presence of the fluorination catalyst claim 1 , and the regeneration stages comprise contacting the fluorination catalyst with an oxidizing agent-containing gas flow.3. The process of or claim 1 , wherein the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages is an oxygen-containing gas flow.4. The process of one of to claim 1 , wherein the activation stage and/or the regeneration stages comprise contacting the fluorination catalyst with the oxidizing agent-containing gas flow for at least 2 hours claim 1 , preferably for at least 4 hours claim 1 , more preferably for at least 10 hours claim 1 , and even more preferably for at least 15 hours.5. The process of one of to claim 1 , wherein the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages contains hydrogen fluoride in addition to the oxidizing agent claim 1 , and wherein the proportion of oxidizing agent in the oxidizing agent-containing gas flow of the activation stage and/or the regeneration stages is preferably from 2 to 98 mol % claim 1 , and more preferably from 5 to 50 mol % claim 1 , relative to the total amount oxidizing agent and hydrogen fluoride.6. The process of one of to claim 1 , wherein the oxidizing agent-containing gas flow of the activation stage ...

PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE

The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst. 1. Process of catalytic fluorination in gas phase of product 1 ,1 ,1 ,2 ,3-pentachloropropane and/or 1 ,1 ,2 ,2 ,3-pentachloropropane into product 2 ,3 ,3 ,3-tetrafluoropropene.2. Process according to claim 1 , carried out in a single stage claim 1 , preferably in one reactor claim 1 , more preferably in one catalytic bed.3. Process according to or claim 1 , wherein the product 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is present at a concentration of at least 1% claim 1 , preferably more than 2% claim 1 , more preferably more than 3%.4. Process according to any one of to claim 1 , wherein said catalyst is a chromium catalyst claim 1 , supported or unsupported claim 1 , preferably unsupported.5. Process according to any one of to claim 1 , wherein said catalyst further comprises a co-catalyst selected from Ni claim 1 , Co claim 1 , Zn claim 1 , Mn claim 1 , Mg or mixtures thereof claim 1 , preferably nickel or magnesium claim 1 , and wherein said co-catalyst is preferably present in an amount from about 1-10 wt % of said fluorination catalyst.6. Process according to any one of to claim 1 , carried out in the presence of a catalyst comprising Ni—Cr claim 1 , preferably supported.7. Process according to any one of to claim 1 , wherein said catalyst is supported on a support selected from fluorinated alumina claim 1 , fluorinated chromia claim 1 , fluorinated activated ca bon or graphite carbon.8. Process according to any one of to claim 1 , wherein said fluorination catalyst is activated with a fluorine-containing compound claim 1 , preferably hydrogen fluoride.9. Process according to one of the to claim 1 , in which the 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane contains up to 40 mole of isomer 1 claim 1 ,1 claim 1 ...

Compositions of chromium oxyfluoride or fluoride catalysts, their preparation and their use in gas-phase processes

The present invention relates to a process for modifying the fluorine distribution in a hydrocarbon compound in the presence of a catalyst, characterized by the use, as catalyst, of a solid composition comprising at least one component containing chromium oxyfluoride or fluoride of empirical formula Cr x M (1-x) O r F s , where 2r+s is greater than or equal to 2.9 and less than 6, M is a metal chosen from columns 2 to 12 of the Periodic Table of the Elements, x has a value from 0.9 to 1, s is greater than 0 and less than or equal to 6 and r is greater than or equal to 0 and less than 3, the said solid composition having a crystallinity of less than 20% by weight. The present invention also relates to the solid composition per se.

Azeotropic compositions of 1,3,3,3-tetrachloroprop-1-ene and hydrogen fluoride

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.

PROCESS FOR THE PREPARATION OF 2,3,3,3-TETRAFLUOROPROPENE (1234YF)

The present invention provides an integrated process for preparing 2,3,3, 3-tetrafluoropropene (1234yf), the process comprising: (a) vapour phase catalytic fluorination of a first composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CF3C—CNCH2, 1233xl) with hydrogen fluoride (HF) in a fluorination reactor to produce a fluorination product stream comprising 1,1,2,2-pentafluoropropane (245cb), HF and HCI; (b) vapour phase catalytic dehydrofluorination composition comprising 245cb in a dehydrofluorination reactor to produce a dehydrofluorination product stream comprising 1234yf and HF; wherein the fluorination product stream and the dehydrofluorination product stream are combined and subjected to (c) purification to produce a composition comprising 245cb and a 1234yf product stream. 121.-. (canceled)22. An integrated process for preparing 2 ,3 ,3 ,3-tetrafluoropropene (1234yf) , the process comprising{'sub': 3', '2, '(a) vapour phase catalytic fluorination of a first composition comprising 3,3,3-trifluoro-2-chloro-prop-1-ene (CFCCl═CH, 1233xf) with hydrogen fluoride (HF) in a fluorination reactor to produce a fluorination product stream comprising 1,1,1,2,2-pentafluoropropane (245cb), HF and HCl;'}(b) vapour phase catalytic dehydrofluorination of a second composition comprising 245cb in a dehydrofluorination reactor to produce a dehydrofluorination product stream comprising 1234yf and HF;wherein the fluorination product stream and the dehydrofluorination product stream are combined and subjected to (c) purification to produce a composition comprising 245cb and a 1234yf product stream,wherein the purification step (c) comprises a distillation step in which a lighter fraction comprising 245cb, 1234yf, any 1234ze(E) and some HF is distilled leaving a heavier fraction comprising the majority of the HF and unreacted 1233xf, and wherein the lighter fraction is removed from the distillation column and passed to a scrubbing train.23. A process according to claim 22 , ...

Process for Purifying (Hydro)Fluoroalkenes

The invention relates to a process for removing one or more undesired (hydro)halocarbon compounds from a (hydro)fluoroalkene, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminium-containing absorbent, activated carbon, or a mixture thereof.

AZEOTROPE-LIKE COMPOSITION OF 2-CHLOR0-3,3,3-TRIFLUOROPROPENE (HCFC-1233xf) AND HYDROGEN FLUORIDE (HF)

Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). 1. An azeotropic or azeotrope-like composition consisting essentially of hydrogen fluoride and 2-chloro-3 ,3 ,3-trifluoropropene.2. An azeotropic or azeotrope-like composition which consists essentially of from about 6.2 mole percent to about 90.7 mole percent hydrogen fluoride and from about 9.3 mole percent to about 93.8 mole percent 2-chloro-3 ,3 ,3-trifluoropropene , which composition has a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.3. The composition of which consists of hydrogen fluoride and 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene.4. The composition of wherein the hydrogen fluoride is present in the amount from about 53.5 mole percent to about 86.7 mole percent.5. The composition of wherein the hydrogen fluoride is present in the amount from about 79.3 mole percent to about 85.3 mole percent.6. The composition of wherein the hydrogen fluoride is present in the amount from about 60 mole percent to about 71 mole percent.7. The composition of wherein the hydrogen fluoride is present in the amount from about 60.2 mole percent to about 71.7 mole percent.8. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present in the amount from about 13.3 mole percent to about 46.5 mole percent.9. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present in the amount from about 14.7 mole percent to about 20.7 mole percent.10. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present in the amount from about 29 mole percent to about 40 mole percent.11. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present ...

FLUORINATION PROCESS AND REACTOR

The invention relates to a process to prepare tetrahalopropenes, such as 2-chloro-3,3,3-trifluoropropene (1233xf). The process comprises atomizing a feed material, such as 1,1,2,3-tetrachloropropene (1230xa) and the like, and mixing it with superheated HF to form a vaporized composition of feed material and HF with substantially instantaneous contact with a vapor phase fluorination catalyst. The invention extends catalyst life and forestalls catalyst deactivation. 1. A reactor apparatus comprising:a reaction chamber;a heating chamber disposed on the reaction chamber, said heating chamber comprising a mixing area in fluid communication with said reaction chamber;at least first and second feed lines in fluid communication with said mixing area; andan atomizing nozzle disposed on at least said first feed line, said nozzle having an exit into said mixing area.2. The apparatus of wherein the heating chamber comprises heating means.3. The apparatus of further comprising superheating means in communication with at least said second feed line.4. The apparatus of further comprising a catalyst bed within said reaction chamber.5. The apparatus of wherein said nozzle exit is located proximate said catalyst bed.6. The apparatus of wherein the mixing area is contiguous with the reaction chamber.7. The apparatus of further comprising at least one outlet in fluid communication with said reaction chamber.8. A process to prepare a tetrahalopropene comprising:a) providing a reactor apparatus having a catalyst bed within a reaction chamber, and a heating chamber disposed on the reaction chamber, the heating chamber comprising a mixing area in fluid communication with said reaction chamber;b) supplying superheated HF and an atomized feed material selected from the group consisting of chlorocarbons, mixed chlorocarbons, and combinations thereof, to the mixing area under conditions effective to form a vaporized composition comprising the feed material and the HF; andc) contacting the ...

PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE

The invention relates to a process to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) or 2-chloro-1,1,12-tetrafluoropropane (HCFC-244bb) using dichloro-trifluoropropanes and/or trichloro-difluoropropanes, and to prepare 2-chloro-3,3,3-trifluoropropene (HCO-1233xf) using various 242 and 243 isomers. 1. A process to prepare 2-chloro-1 ,1 ,12-tetrafluoropropane (HCFC-244bb) comprising contacting a compound selected from the group consisting of a dichloro-trifluoropropane , a trichloro-difluoropropane , and combinations thereof , with anhydrous hydrogen fluoride (HF) under conditions effective to produce HCFC-244bb.2. The process of wherein the dichloro-trifluoropropane is selected from the group consisting of 2 claim 1 ,2-dichloro-1 claim 1 ,1 claim 1 ,1-trifluoropropane (HCFC-243ab) claim 1 , 1 claim 1 ,2-dichloro-1 claim 1 ,1 claim 1 ,2-trifluoropropane (HCFC-243bc) claim 1 , 2 claim 1 ,3-dichloro-1 claim 1 ,1 claim 1 ,1-trifluoropropane (HCFC-243 db) and combinations thereof.3. The process of wherein the trichloro-difluoropropane is selected from the group consisting of 1 claim 1 ,2 claim 1 ,2-trichloro-1 claim 1 ,1-difluoropropane (HCFC-242ac) claim 1 , 1 claim 1 ,1 claim 1 ,2-trichloro-1 claim 1 ,2-difluoropropane (HCFC-242bc) claim 1 , 1 claim 1 ,2 claim 1 ,3-trichloro-1 claim 1 ,1-difluoropropane (HCFC-242dc) and combinations thereof.4. The process of wherein the process occurs in a vapor phase.5. The process of wherein the contacting occurs in the presence of a catalyst.6. The process of wherein the catalyst is selected from the group consisting of CrO claim 5 , FeCl/C claim 5 , CrO/AlO claim 5 , CrO/AlF claim 5 , CrO/carbon claim 5 , CoCl/CrO/AlO claim 5 , NiCl/CrO/AlO claim 5 , CoCl/AlF claim 5 , NiCl/AlFand combinations thereof.7. The process of wherein the contacting occurs at a temperature between about 150° C. and about 500° C.8. The process of wherein the contacting occurs at a pressure of between about 20 psig and about 200 psig.9. A process to ...

INTEGRATED PROCESS TO PRODUCE 2,3,3,3-TETRAFLUOROPROPENE

The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation. 1. A separation process which comprises: i) 2-chloro-3,3,3-trifluoropropene (1233xf),', 'ii) one or more organics selected from the group consisting of trichlorofluoropropene (1231) isomers, 2,3-dichloro-3,3-difluoropropene (1232xf), 2-chloro-1,1,1,2-tetrafluoropropane (244bb), 1,1,1,2,2-pentafluoropropane (245cb), dichlorotrifluoropropane (243) isomers, trichlorodifluorpropane (242) isomers;, 'providing a first composition comprising'}adding HF to said first composition in an amount effective to form a second composition comprising HF-azeotropes of 1233xf and of at least one of the organics; andseparating the HF azeotropes from the second composition.2. The process of wherein the HF-azeotropes are selected from the group consisting of binary and tertiary HF-azeotropes of 1233xf and of the organics.3. The process of wherein the HF-azeotropes are selected from the group consisting of 1230xa/HF claim 2 , 1233xf/HF claim 2 , 1232xf/HF claim 2 , 244bb/HF claim 2 , 243db/HF claim 2 , 1233xf/244bb/HF and the like.4. The process of wherein the HF is added in an amount of between about 5% to about 95% based on the weight of the second composition.5. The process of wherein the HF is added in an amount of between about 20% to about 80%.6. The process of wherein the separating is by distillation.8. The process of wherein the separation of step (b) is by phase separation.9. The process of wherein the separation of step (d) is by distillation.10. A process to prepare 2 claim 7 ,3 claim 7 ,3 claim 7 ,3-tetrafluoropropene (1234yf) comprising:{'claim-ref': {'@idref': 'CLM-00007', 'claim 7'}, 'a) providing a first intermediate composition comprising 2-chloro-3 ...

Method for Manufacturing 2,3,3,3-Tetrafluoropropene

The present invention relates to a method for manufacturing 2,3,3,3-tetrafluoropropene from halopropanes having the formula CXCHCICHX and halopropenes having the formulas CXCCI═CHCCIXCCI═CHand CX═CCICHX, where X is independently a fluorine or chlorine atom. The invention specifically relates to a method including at least one step during which 2-chloro-3,3,3-trifluoro-1-propene, optionally mixed with at least one halopropane having the formula CXCHCICHX and/or at least one halopropene having the formulas CCIXCCI═CHand CX═CCICHX, where X is independently a fluorine or chlorine atom, reacts with HF in the gaseous phase in the presence of a fluoridation catalyst at a temperature of between 320 and 420° C. with a molar ratio of oxygen to 2-chloro-3,3,3-trifluoro-1-propene of more than 1 but no more than 2.5, and a molar ratio of HF to the total amount of organic compounds to be reacted of between 5 and 40. 115-. (canceled)16. A process for manufacturing 2 ,3 ,3 ,3-tetrafluoropropene , comprising reacting 2-chloro-3 ,3 ,3-trifluoro-1-propene with HF in the gas phase in the presence of a fluorination catalyst in a reaction vessel at a temperature of between 320 and 420° C. , wherein a molar ratio of oxygen to 2-chloro-3 ,3 ,3-trifluoro-1-propene in the reaction vessel is greater than 1 and less than or equal to 2.5 and a molar ratio of HF to all of the compounds to be reacted is between 5 and 40.17. The process of claim 16 , wherein 2-chloro-3 claim 16 ,3 claim 16 ,3-trifluoro-1-propene is mixed with at least one halopropane of formulae CXCHClCHX and CXCFXCHand/or at least one halopropene of formulae CClXCCl═CHand CX═CClCHX claim 16 , where X is independently a fluorine or chlorine atom.18. The process as claimed in claim 16 , wherein the molar ratio of oxygen to 2-chloro-3 claim 16 ,3 claim 16 ,3-trifluoro-1-propene is between 1.25 and 2.5.19. The process as claimed in claim 17 , wherein the molar ratio of HF to the organic compounds to be reacted is between 10 and 40.20 ...

E-1-CHLORO-3,3,3-TRIFLUOROPROPENE PRODUCTION PROCESS FROM 1,1,3,3-TETRACHLOROPROPENE

A production process for the production of E-1-chloro-3,3,3-trifluoropropene, the process including at least one stage during which 1,3,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase, in the absence of a catalyst, with an HF/1,1,3,3-tetrachloropropene molar ratio between 3 and 20 inclusive, at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive. 1. A production process for the production of E-1-chloro-3 ,3 ,3-trifluoropropene , the process comprising at least one stage during which 1 ,3 ,3 ,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase , in the absence of a catalyst , with an HF/1 ,1 ,3 ,3-tetrachloropropene molar ratio between 3 and 20 inclusive , at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive.2. A production process for the production of E-1-chloro-3 ,3 ,3-trifluoropropene , the process comprising:(i) at least one stage during which 1,1,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase in a reactor equipped with a drain and an effluent outlet;(ii) at least one stage for treating the effluent from the reactor in order to provide a flow A that comprises E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene and a flow B that comprises at least 50% HF in weight;(iii) at least one stage for recovering the hydrochloric acid from flow A, the hydrochloric acid being in flow C and flow D that includes E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene;(iv) at least one stage for purifying flow D from stage (iii) in order to purify the E-1233zd to a level higher than or equal to 98% in weight.3. The production process of claim 2 , the process comprises a drainage stage claim 2 , wherein drainage collected in the reactor drain is claim 2 , after treatment claim 2 , recycled back to the reactor.4 ...

HYDROFLUORINATION OF 1233XF TO 244BB BY SBF5

A method hydrofluorinates an olefin of the formula: RCX=CYZ to produce a hydrofluoroalkane of formula RCXFCHYZ or RCXHCFYZ, where X, Y, and Z are independently the same or different and are selected from the group consisting of H, F, Cl, Br, and C-Calkyl which is partially or fully substituted with chloro or fluoro or bromo; and R is a C-Calkyl which is unsubstituted or substituted with chloro or fluoro or bromo. The method includes reacting the olefin with HF in the vapor phase, in the presence of SbF, at a temperature ranging from about −30° C. to about 65° C. and compositions formed by the process. 1. A method for preparing 2 ,3 ,3 ,3-tetrafluoro-1-propene comprising:reacting a hydrofluoroalkane composition in a vapor phase reactor to form 2,3,3,3-tetrafluoro-1-propene;{'sub': '5', 'wherein the hydrofluoroalkane composition is formed by reacting HF with 2-chloro-3,3,3-trifluoropropene in the liquid phase in the presence of a catalyst, the catalyst being SbF, at a temperature ranging from about −30° C. to about 65° C. to produce the hydrofluoroalkane composition; and'}wherein the hydrofluoroalkane composition comprises greater than 95% 2-chloro-1,1,1,2-tetrafluoropropane.2. The method of claim 1 , wherein the hydrofluoroalkane composition comprises greater than 98% 2-chloro-1 claim 1 ,1 claim 1 ,1 claim 1 ,2-tetrafluoropropane.3. The method of claim 1 , wherein the hydrofluoroalkane composition comprises greater than 99% 2-chloro-1 claim 1 ,1 claim 1 ,1 claim 1 ,2-tetrafluoropropane.4. The method of claim 1 , wherein the hydrofluoroalkane composition further comprises wherein the hydrofluoroalkane composition further comprises at least two of 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,2-pentafluoropropane claim 1 , 1 claim 1 ,1 claim 1 ,1-trifluoro-2 claim 1 ,2-dichloropropane claim 1 , and 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentafluoropropane.5. A hydrofluoroalkene composition formed by reacting a hydrofluoroalkane composition in a vapor phase reactor ...

Process for the Preparation of 2,3,3,3 Tetrafluoropropene

The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene from 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane, comprising the following steps: (a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into a reaction mixture comprising HCl, 2-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, unreacted HF, and optionally 1,1,1,2,2-pentafluoropropane; (b) separating the reaction mixture into a first stream comprising HCl and 2,3,3,3-tetrafluoropropene and a second stream comprising HF, 2-chloro-3,3,3-trifluoropropene and optionally 1,1,1,2,2-pentafluoropropane; (c) catalytic reaction of the second stream into a reaction mixture comprising 2,3,3,3-tetrafluoropropene, HCl, unreacted 2-chloro-3,3,3-trifluoropropene, unreacted HF and optionally 1,1,1,2,2-pentafluoropropane and (d) feeding the reaction mixture of step (c) directly without separation to step (a). 1. A process for preparing 2 ,3 ,3 ,3-tetrafluoropropene , comprising:(a) catalytically reacting of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF to produce a first reaction mixture comprising HCl, 2-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, unreacted HF and optionally 1,1,1,2,2-pentafluoropropane;(b) separating the first reaction mixture into a first stream comprising HCl and 2,3,3,3-tetrafluoropropene and a second stream comprising HF, 2-chloro-3,3,3-trifluoropropene and optionally 1,1,1,2,2-pentafluoropropane;(c) catalytically reacting the second stream to produce a second reaction mixture comprising 2,3,3,3-tetrafluoropropene, HCl, unreacted 2-chloro-3,3,3-trifluoropropene and HF and optionally 1,1,1,2,2-pentafluoropropane; and(d) feeding the second reaction mixture of step (c) directly to step (a).2. The process according to claim 1 , wherein step (a) and step (c) are carried out in the gas phase.3. The process according to claim 1 , or the catalyst in step (a) and/or step (c) ...

METHOD FOR PRODUCING DIFLUOROMETHANE

A method for producing difluoromethane, including the catalytic reaction of dichloromethane with hydrogen fluoride in the liquid phase, in the presence of chlorine, and in the presence of an ionic liquid catalyst consisting of the product of the reaction of antimony pentachloride with an organic salt having the general formula X+A, where A is a halide anion or hexafluoroantimonate, and X+ is a quaternary ammonium cation, quarternary phosphonium or ternary sulfonium. Further, equipment suitable for implementing said method. 1. A process for the production of difluoromethane comprising the catalytic reaction of dichloromethane with hydrogen fluoride in the liquid phase in the presence of chlorine and in the presence of an ionic liquid catalyst consisting of the product of the reaction of antimony pentachloride with an organic salt of general formula XA in which A is a halide or hexafluoroantimonate anion and X is a quaternary ammonium , quaternary phosphonium or ternary sulfonium cation.2. The process as claimed in claim 1 , in which the cation X is a tetraalkylammonium claim 1 , trialkylammonium claim 1 , alkylpyridinium claim 1 , dialkylimidazolium or trialkylimidazolium cation claim 1 , the catalyst being the product of the reaction of antimony pentachloride with 1-ethyl-3-methylimidazolium chloride.3. The process as claimed in claim 1 , comprising a separation of the products resulting from the reaction claim 1 , making possible:withdrawal of a stream of difluoromethane;recovery of a stream of chlorine and recycling of the stream of chlorine to the catalytic reaction.4. The process as claimed in claim 1 , in which the stream of chlorine comprises a mixture of chlorine and difluoromethane.5. The process as claimed in claim 1 , in which the separation of the products resulting from the reaction also makes possible the recovery of a stream of reactants and coproducts and the recycling thereof to the catalytic reaction.6. The process as claimed in claim 1 , in which ...

METHOD FOR PROLONGING A CATALYST'S LIFE DURING HYDROFLUORINATION

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). 1) A process for producing 2-chloro-1 ,1 ,1 ,2-tetrafluoropropane comprising reacting a feed comprising a substantially pure organic component of 2-chloro-3 ,3 ,3 ,-trifluoropropene with hydrogen fluoride and a fluorination catalyst in the absence of an oxidizing agent.2) The process of wherein the substantially pure organic component of 2-chloro-3 ,3 ,3 ,-trifluoropropene comprises at least 99% of 2-chloro-3 ,3 ,3-trifluoropropene. 3) The process of wherein the substantially pure organic component of 2-chloro-3 ,3 ,3 ,-trifluoropropene is produced by a process comprising fluorinating 1 ,1 ,2 ,3 ,-tetrachloropropene and/or 1 ,1 ,1 ,2 ,3-tetrachloropropane and separating 2-chloro-3 ,3 ,3-trifluoropropene from an intermediate stream.43) The process of claim wherein the intermediate stream comprises 2-chloro-3 ,3 ,3 ,-trifluoropropene and one or more reaction impurities.5) The process of wherein at least one impurity is 2 claim 4 ,3-dichloro-3 claim 4 ,3-trifluoropropene.63) The process of claim wherein the step of separating 2-chloro-3 claim 4 ,3 claim 4 ,3-trifluoropropene from one or more impurities is performed by distillation.7) The process of wherein the reaction is conducted in a liquid phase or a vapor phase.8) The process of wherein the reaction is conducted continuously or batch-wise.9) The process of wherein the mole ratio of hydrogen fluoride to the substantially pure organic component of 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene that ...

Method of fluorination in the gaseous phase

The present invention concerns a method of producing at least one compound of formula (II): CF 3 —CX(Z)n—CHX(Z)n in which X represents, independently, a hydrogen, fluorine or chlorine atom, Z represents, independently, a hydrogen or fluorine atom, and n =0 or 1, from at least one compound of formula (I): CX(Y)2—CX(Y)m—CHmXY in which X and Y represent, independently, a hydrogen, fluorine or chlorine atom and m =0 or 1. The method comprises at least one step during which at least one compound of formula (I) reacts with HF in the gaseous phase in the presence of a fluorination catalyst in order to give at least one compound of formula (II), characterised in that the catalyst is made from chromium oxyfluoride containing at least nickel as the co-metal and at least one rare earth metal.

METHOD FOR PRODUCING 1,1,2-TRIFLUOROETHANE (HFC-143)

The present disclosure provides a method for producing HFC-143 that is not expensive, and that is more efficient than conventional methods. Specifically, the present disclosure provides a method for producing 1,1,2-trifluoroethane (HFC-143) that includes contacting at least one chlorine-containing compound selected from the group consisting of 1,1,2-trichloroethane (HCC-140), 1,2-dichloro-1-fluoroethane (HCFC-141), 1,1-dichloro-2-fluoroethane (HCFC-141a), (E,Z)-1,2-dichloroethylene (HCO-1130 (E,Z)), and (E,Z)-1-chloro-2-fluoroethylene (HCFO-1131 (E,Z)) with hydrogen fluoride to perform one or more fluorination reactions, thereby obtaining a reaction gas containing HFC-143, hydrogen chloride, and hydrogen fluoride. 1. A method for producing 1 ,1 ,2-trifluoroethane (HFC-143) , the method comprisingcontacting in a gas phase at least one chlorine-containing compound selected from the group consisting of 1,1,2-trichloroethane (HCC-140), 1,2-dichloro-1-fluoroethane (HCFC-141), 1,1-dichloro-2-fluoroethane (HCFC-141a), (E,Z)-1,2-dichloroethylene (HCO-1130 (E,Z)), and (E,Z)-1-chloro-2-fluoroethylene (HCFO-1131 (E,Z)) with hydrogen fluoride to perform one or more fluorination reactions, thereby obtaining a reaction gas containing HFC-143, hydrogen chloride, and hydrogen fluoride.2. The production method according to claim 1 , wherein the one or more fluorination reactions are performed under a pressure of 0 to 2 MPaG.3. The production method according to claim 1 , wherein the one or more fluorination reactions are performed in the presence of a catalyst.4. The production method according to claim 1 , wherein the one or more fluorination reactions are performed at a temperature of 150 to 600° C.5. The production method according to claim 1 , wherein the contact time W/Fo between the at least one chlorine-containing compound and the hydrogen fluoride is 0.1 to 100 g·sec/cc in the one or more fluorination reactions.6. The production method according to claim 1 , wherein the ...

PROCESS TO MANUFACTURE 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE (HCFC-244bb)

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 a liquid phase reaction in the presence of hydrogen chloride and a liquid phase fluorination catalyst. The hydrogen chloride is added into the reaction from an external source at a pressure of about 100 psig or more. The HCFC-244bb is an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf). 1. A process for the production of 2-chloro-1 ,1 ,1 ,2-tetrafluoropropane which comprises reacting 2-chloro-3 ,3 ,3 ,-trifluoropropene with hydrogen fluoride , in a liquid phase reaction in the presence of hydrogen chloride and a liquid phase fluorination catalyst , wherein the hydrogen chloride is added into the reaction from an external source at a pressure of about 100 psig or more.2. The process of wherein the reacting is conducted in a liquid phase reaction vessel.3. The process of wherein the reacting is conducted continuously.4. The process of wherein the mole ratio of hydrogen fluoride to 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene fed to the reaction ranges from at least 1:1 to about 50:1.5. The process of wherein the mole ratio of hydrogen chloride to 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene fed to the reaction ranges from at least 0.1:1 to about 10:1.6. The process of wherein the liquid phase fluorination catalyst comprises SbCl claim 1 , SbCl claim 1 , SbF claim 1 , SnCl claim 1 , TaCl claim 1 , TiCl claim 1 , NbCl claim 1 , MoCl claim 1 , FeCl claim 1 , CrF claim 1 , Cr2O3 claim 1 , a fluorinated species of SbCl claim 1 , a fluorinated species of SbCl claim 1 , a fluorinated species of SnCl claim 1 , a fluorinated species of TaCl claim 1 , a fluorinated species of TiCl claim 1 , a fluorinated species of NbCl claim 1 , a fluorinated species of MoCl claim 1 , a fluorinated species of FeCl claim 1 , a fluorinated species of CrO claim 1 , or ...

PROCESS FOR MANUFACTURING TETRAFLUOROPROPENE

A process for manufacturing tetrafluoropropene, including, alternately: at least one step of reacting a chlorinated compound with hydrofluoric acid in the gas phase, in the presence of a fluorination catalyst, the proportion of oxygen optionally present being less than 0.05 mol. % relative to the chlorinated compound; a step of regenerating the fluorination catalyst by bringing the fluorination catalyst into contact with a regeneration stream including an oxidizing agent. Also, equipment suitable for carrying out this process. 1. A process for the manufacture of tetrafluoropropene , comprising , alternately:at least one stage of reaction of a chlorinated compound with hydrofluoric acid in the gas phase, in the presence of a fluorination catalyst, the proportion of oxygen optionally present being less than 0.05 mol % with respect to the chlorinated compound;a stage of regeneration of the fluorination catalyst by bringing the fluorination catalyst into contact with a regeneration stream comprising an oxidizing agent.2. The process as claimed in claim 1 , in which the stage of reaction of the chlorinated compound with hydrofluoric acid is carried out essentially in the absence of oxygen.3. The process as claimed in claim 1 , in which the regeneration stream contains at least 1 mol % of oxygen with respect to the total regeneration stream.4. The process as claimed in claim 1 , in which the stage of reaction of the chlorinated compound with hydrofluoric acid is carried out in a single reactor claim 1 , separately in time with respect to the stage of regeneration of the fluorination catalyst.5. The process as claimed in claim 1 , in which the stage of reaction of the chlorinated compound with hydrofluoric acid is carried out in at least one first reactor claim 1 , simultaneously with the implementation of the stage of regeneration of the fluorination catalyst in at least one second reactor.6. The process as claimed in claim 1 , in which the tetrafluoropropene is 2 claim 1 ...

COMPOSITIONS COMPRISING 2,3-DICHLORO-1,1,1-TRIFLUOROPROPANE, 2-CHLORO-1,1,1-TRIFLUOROPROPENE, 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE OR 2,3,3,3-TETRAFLUOROPROPENE

Disclosed are compositions comprising HCFC-243db, HCFO-1233xf, HCFC-244db and/or HFO-1234yf and at least one additional compound. For the composition comprising 1234yf, the additional compound is selected from the group consisting of HFO-1234ze, HFO-1243zf, HCFC-243db, HCFC-244db, HFC-245cb, HFC-245fa, HCFO-1233xf, HCFO-1233zd, HCFC-253fb, HCFC-234ab, HCFC-243fa, ethylene, HFC-23, CFC-13, HFC-143a, HFC-152a, HFC-236fa, HCO-1130, HCO-1130a, HFO-1336, HCFC-133a, HCFC-254fb, CHF═CHCl, HFO-1141, HCFO-1242zf, HCFO-1223xd, HCFC-233ab, HCFC-226ba, and HFC-227ca. Compositions comprising HCFC-243db, HCFO-1233xf, and/or HCFC-244db are useful in processes to make HFO-1234yf. Compositions comprising HFO-1234yf are useful, among other uses, as heat transfer compositions for use in refrigeration, air-conditioning and heat pump systems. 1. A composition comprising HFO-1234yf , HFO-1234ze , HFO-1243zf and at least one additional compound selected from the group consisting of HCFO-1233xf , HCFC-244bb and HCFC-1131.2. The composition of containing less than about 1 weight percent of the at least one additional compound.3. The composition of wherein said additional compound comprises HCFO-1233xf.4. The composition of wherein said additional compound comprises HCFC-1131.5. The composition of wherein said additional compound further comprises HFC-143a.6. The composition of wherein said additional compound comprises HCFC-244bb.7. The composition of wherein said additional compound comprises HCFO-1233xf and HCFC-1131.8. The composition of wherein the amount of the at least one additional compound is greater than 0 and less than about 1 weight percent.9. A composition comprising HFO-1234yf claim 7 , HFO-1234ze claim 7 , HFO-1243zf claim 7 , HCFC-1131 and HFC-143a.10. A composition comprising HFO-1234yf claim 7 , HFO-1234ze claim 7 , HFO-1243zf claim 7 , HCFC-1131 claim 7 , HFC-143a and at least one additional compound selected from the group consisting of HCFC-244db claim 7 , HFC-245cb and ...

METHOD FOR PRODUCING 1-CHLORO-3,3,3-TRIFLUOROPROPENE

The present invention relates to a process for producing 1-chloro-3,3,3-trifluoropropene, comprising the step i) of contacting hydrofluoric acid (HF) in a reactor with a starting composition comprising at least one of the chloro compounds selected from the group consisting of 1,1,3,3-tetrachloropropene (1230za), 1,3,3,3-tetrachloropropene (1230zd) and 1,1,1,3,3-pentachloropropane (240fa), or a mixture thereof, to produce a stream A comprising 1-chloro-3,3,3-trifluoropropene (1233zd), characterized in that said step i) is carried out in a low-HF liquid phase. 1. A process for producing 1-chloro-3 ,3 ,3-trifluoropropene , comprising the step i) of contacting hydrofluoric acid (HF) in a reactor with a starting composition comprising at least one of the chloro compounds selected from the group consisting of 1 ,1 ,3 ,3-tetrachloropropene (1230za) , 1 ,3 ,3 ,3-tetrachloropropene (1230zd) and 1 ,1 ,1 ,3 ,3-pentachloropropane (240fa) , or a mixture thereof , to produce a stream A comprising 1-chloro-3 ,3 ,3-trifluoropropene (1233zd) , wherein said step i) is carried out in a low-HF liquid phase.2. The process as claimed in claim 1 , wherein said low-HF liquid phase is a liquid phase comprising less than 15% by weight of HF claim 1 , based on the total weight of said liquid phase.3. The process as claimed in claim 1 , wherein said at least one of the chloro compounds is 1 claim 1 ,1 claim 1 ,3 claim 1 ,3-tetrachloropropene (1230za).4. The process as claimed in claim 1 , wherein said starting composition comprises at least 10% by weight of said at least one of the chloro compounds claim 1 , based on the total weight of said starting composition.5. The process as claimed in claim 1 , wherein said starting composition comprises less than 10% by weight of HF claim 1 , based on the total weight of said starting composition.6. The process as claimed in claim 1 , wherein said liquid phase comprises at least 10% by weight of compounds of formula (I) CHFCl(I) in which n is an integer ...

Integrated process and methods of producing (e) 1-chloro-3,3,3-trifluoropropene

The present invention relates to methods, process, and integrated systems for economically producing (E)-1-chloro-3,3,3-trifluoropropene via vapor phase and/or liquid processes.

INTEGRATED PROCESS TO PRODUCE 2,3,3,3-TETRAFLUOROPROPENE

The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation. 16.-. (canceled)8. The process of wherein the separation of step (b) is by phase separation.9. The process of wherein the separation of step (d) is by distillation.10. A process to prepare 2 claim 7 ,3 claim 7 ,3 claim 7 ,3-tetrafluoropropene (1234yf) comprising:{'claim-ref': {'@idref': 'CLM-00007', 'claim 7'}, 'a) providing a first intermediate composition comprising 2-chloro-3,3,3-trifluoropropene (1233xf) as prepared according to ;'}b) contacting said first intermediate composition comprising 1233xf with a first concentration of HF in the presence of a fluorination catalyst under conditions effective to produce a second intermediate composition comprising 244bb; andc) dehydrochlorinating at least a portion of said 244bb to produce a reaction product comprising 1234yf.11. The process of wherein the second intermediate composition further comprises unreacted 1233xf.12. The process of wherein a second concentration of HF is added to the second intermediate composition to in an amount effective to from an azeotrope with the unreacted 1233xf.13. The process of wherein the azeotrope of the unreacted 1233xf is separated from the 244bb.14. The process of wherein the azeotrope of the unreacted 1233xf is separated from the 244bb by distillation.15. The process of wherein the unreacted 1233xf is recovered.16. The process of wherein the unreacted 1233xf is recycled to step (a).17. The process of wherein the HF is added in an amount of between about 0.01% to about 20% based on the weight of the second intermediate composition.18. The process of wherein the HF is added in an amount of between about 0.05% to about 10%.1920.-. (canceled) The present ...