Abstract: The present invention relates to a method for producing high-purity 1,1,1,2,3,3-hexafluoropropane and a composition containing mainly 1,1,1,2,3,3-hexafluoropropane, suitable for use as a cleaning agent in the semiconductor industry.

Abstract: 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 G1 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, L1 comprising a part of the unreacted HF, a part of the intermediate produc

Abstract: 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 C1-C10 hydrohalocarbons.

Abstract: The present invention relates to a process for modifying the fluorine distribution in a hydrocarbon compound, comprising a step of placing in contact between a hydrocarbon compound and a catalytic composition comprising a chromium-based catalyst, said process being performed in a reactor made of a material comprising a base layer made of a material M1 and an inner layer made of a material M2, said base layer and said inner layer being laid against each other, characterized in that the material M2 comprises at least 80% by weight of nickel on the basis of the total weight of the material M2, advantageously at least 90% by weight, preferably at least 95% by weight, in particular at least 99% by weight of nickel on the basis of the total weight of the material M2.

Abstract: The present invention concerns a method for preparing tetrafluoropropene utilising three reactors and comprising the steps of (a) implementing, in the first and second reactors, at least one step of reacting, in the gas phase, a compound B in the presence of hydrofluoric acid and a catalyst, in alternation with a step of regenerating the catalyst by bringing it into contact with a regeneration flow comprising an oxidising agent, (b) implementing, in the third reactor, a preliminary step of producing the compound B, in alternation with a step of regenerating the preliminary catalyst with a regeneration flow comprising an oxidising agent. The step of regenerating the preliminary catalyst in the third reactor is implemented in the absence of a step of reacting the compound B in the presence of hydrofluoric acid in said first and second reactors. The present invention also concerns a facility configured to implement the present method.

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

Abstract: The present invention concerns a method for preparing tetrafluoropropene utilising three reactors each comprising a catalytic bed containing a catalyst or a preliminary catalyst, and comprising the implementation, separately in each of the reactors, of catalytic reactions or reactions regenerating the catalyst, the quantity of catalyst or preliminary catalyst in the catalytic bed of one of the reactors representing between 90% and 110% of the quantity of catalyst or preliminary catalyst contained in the catalytic bed of one of the other two reactors. The present invention also concerns a facility configured to implement the present method.

Abstract: The invention concerns a method for purifying and drying a hydrofluoroolefin stream comprising a hydrofluoroolefin, water and impurities composed of halogenated carbon compounds, characterised in that said stream is brought into contact with an adsorbent and in that the purification and the drying processes are carried out simultaneously in one and the same step, said hydrofluoroolefin being a compound of formula (I): CX1X2?CX3CX4X5X6 in which each Xi (i ranging from 1 to 6) represents, independently of one another, a hydrogen atom or a chlorine or fluorine atom, it being understood that at least one of the Xi's represents a fluorine atom.

Abstract: A composition including the compound HFO-1234yf and at least one other, additional, compound selected from HCFC-240db, HCFO-1233xf, HCFC-243db, HCFO-1233zd, HCC-40, HCFC-114a, HCFC-115, HCFC-122, HCFC-23, HCFC-124, HCFC-124a, HFC-125, HCFC-133a, HCFC-142, HCFC-143, HFC-52a, HCFC-243ab, HCFC-244eb, HFC-281ea, HCO-1110, HCFO-1111, HCFO-1113, HCFO-1223xd, and HCFO-1224xe. A composition including the compound HFO-1234yf and at least two compounds selected from HFO-1234ze, HFC-245cb, HFC-134a, HCFC-115, HFC-152a, HCC-40 and HFO-1243zf.

Abstract: An azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoro-2-chloropropene and one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also an azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoro-2-chloropropene, and one or more compounds selected from among 1,3,3,3-tetrafluoropropene, 1,1,1,2,2-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 3,3,3-trifluoropropene, E-3,3,3-trifluoro-1-chloropropene, trifluoropropyne, 1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3-pentafluoropropene and 2-chloro,1,1,1,2-1 tetrafluoropropane.

Abstract: The present invention relates to a method for fluorinating a chlorinated compound including the steps of (a) placing said chlorinated compound in contact with gaseous hydrogen fluoride within a reactor and in the presence of a fluorination catalyst to produce a fluorinated compound, and (b) regenerating the fluorination catalyst used in step a), the step of regenerating the fluorination catalyst including (c) treating said fluorination catalyst with an oxidizing agent to form an oxidized fluorination catalyst, and (d) treating the oxidized fluorination catalyst obtained in step (c) with a gas mixture including a reducing agent.

Abstract: The present invention relates to a quasi-azeotropic composition comprising from 60 mol % to 99.9 mol % of 2,3,3,3-tetrafluoropropene and from 0.1 mol % to 40 mol % of trans-1,3,3,3-tetrafluoropropene relative to the total number of moles of the composition, said quasi-azeotropic composition having a boiling point of between 45° C. and 80° C., at a pressure of between 1 and 50 bar abs, preferably between 12 and 20 bar abs. The present invention also relates to the use of said composition in heat transfer applications.

Abstract: An azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoropropene and one or more (hydro)halogen-carbon compounds including between 1 and 3 carbon atoms. Also, a preferred azeotropic or quasi-azeotropic composition including hydrogen fluoride, 3,3,3-trifluoropropene, and one or more compounds selected from among 1,1,1,2,2-pentafluoropropane, 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, 3,3,3-trifluoro-2-chloropropene, E-3,3,3-trifluoro-l-chloropropene, trifluoropropyne, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropane, 1,1,1,3,3-pentafluoropropene, 1,1,1,2,3-pentafluoropropene and 2-chloro, 1,1,1,2-tetrafluoropropane.

Abstract: A method for producing a fluorinated compound comprises: 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 the 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 the method.

Abstract: The present invention concerns a method for producing for producing and purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) from a first composition comprising 2,3,3,3-tetrafluoro-1-propene and chloromethane (40), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extractant in order to form a second composition; (b) extractive distillation of said second composition in order to form (i) a third composition comprising said organic extractant and chloromethane (40); and (ii) a stream comprising 2,3,3,3-tetrafluoro-1-propene (1234yf); (c) recovering and separating said third composition, preferably by distillation, in order to form a stream comprising said organic extractant and a stream comprising chloromethane (40).

Abstract: The invention first relates to a composition comprising at least 99 wt. % of 1,1,1,3,3 -pentachloropropane and at least one compound selected from a list of additional compounds consisting of dichloropropanes, trichloropropanes, tetrachloropropanes, pentachloropropanes different from 1,1,1,3,3-pentachloropropane, 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.

Abstract: 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. The invention also relates to the use of this composition for manufacturing 2,3,3,3-tetrafluoropropene.

Abstract: The invention relates to an azeotropic or quasi-azeotropic composition comprising hydrochloric acid and trifluoropropyne. The invention also relates to a method for separating 2,3,3,3-tetrafluoropropene and trifluoropropyne from a composition A containing 2,3,3,3-tetrafluoropropene and trifluoropropyne, said method comprising the steps of bringing said composition A into contact with an inorganic compound in order to form a composition B; and distilling composition B in order to from a first flow B1 containing trifluoropropyne and the inorganic compound, and a second flow B2 containing 2,3,3,3-tetrafluoropropene.

Abstract: 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 CX3CHClCH2X or CX3CFClCH3, or halopropenes of formula CQX2CCNCH2 and CX2?CClCH2X 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 AlF3 or 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).

Abstract: The present invention concerns a method for purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) from a first composition comprising 2,3,3,3-tetrafluoro-1-propene and at least one of the compounds chosen from the group consisting of 1,1-difluoroethane (152a), chloropentafluoroethane (115), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) said method comprising the steps consisting of: a) bringing said first composition into contact with at least one organic extractant in order to form a second composition; b) extractive distillation of said second composition in order to form (i) a third composition comprising said organic extractant and said at least one of the compounds chosen from the group consisting of 1,1-difluoroethane (152a) chloropentafluoroethane (115), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E); and ii) a stream comprising 2,3,3,3-tetrafluoro-1-propene. The invention also concerns a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene.