Abstract: The present invention relates to a catalyst for producing 1,1-difluoroethane (HCFC-152a) and producing method thereof. More particularly, it is to provide the catalyst prepared by impregnating palladium on the active carbon pretreated with an aqueous hydrogen fluoride solution and an aqueous hydrogen chloride solution in series and its use in the production of 1,1-difluoroethane (HCFC-142b) by dehydrochlorinating 1,1-difluoro-1-chloroethane at 240-300° C. in the supplying molar ratio of 2-6 (H2/HCFC-142b) with maximizing a selectivity toward the product of HCFC-152a.

Abstract: The present invention relates to a process for the synthesis of highly active modified carbon supported palladium catalyst by simultaneously impregnating activated carbon with a palladium precursor and an aluminium precursor. The carbon supported palladium catalyst is useful for the hydrodechlorination of dichlorodifluoromethane to produce difluoromethane.

Abstract: A process for preparing 1-chloro-1,1,3,3,3-pentafluoropropane, CF3CH2CF2Cl, comprising contacting in a reaction zone in the substantial absence of oxygen, reactants comprising chlorine and 1,1,1,3,3-pentafluoropropane, CF3CH2CHF2 (also referred to as HFC-245fa), and subjecting the reactants to actinic radiation, such as UV light at about 2,000 to 4,000 Angstroms, wherein: (1) inert gas is present at a concentration equal to or less than about 5 wt. % of the total weight of reactants; (2) the molar ratio of chlorine to CF3CH2CHF2 is from about 0.2:1 to about 1.5:1; and (3) the concentration of chlorinated product produced having greater than one chlorine present in the molecule is less than or equal to about 10 wt. %.

Abstract: A process is disclosed for producing the pentfluropropenes of the formula CF3CX═CF2, where X is H or Cl. The process involves hydrodehalogenating CF3CCl2CF3 with hydrogen at an elevated temperature in the vapor phase over a catalyst comprising an elemental metal, metal oxide, metal halide and/or metal oxyhalide (the metal being copper, nickel, chromium and the halogen of said halides and said oxyhalides being fluorine and/or chlorine. Processes for producing the hydrofluorocarbons CF3CH2CHF2, CF3CHFCF3 and CF3CH2CF3 are also disclosed which involve (a) hydrodehalogenating CF3CCl2CF3 with the hydrogen as indicated above to produce a product comprising CF3CCl═CF2, CF3CH═CF2, HCl and HF; and (b) either reacting the CF3CCl═CF2 and/or CF3CH═CF2 produced in (a) in the vapor phase with hydrogen to produce CF3CH2CHF2, reacting CF3CCl═CF2 produced in (a) with HF to produce CF3CHFCF3, or reacting the CF3CH═CF2produced in (a) with HF to produce CF3CH2CF3.

Abstract: A process is disclosed for producing RCFZH by reaction of an iodide compound of the formula R′CFZI with hydrogen at an elevated temperature, wherein R is SF5, CF2SF5 or RfCF2Y, R′ is SF5, CF2SF5 or RfCF2X, Rf is a perfluoroalkylene group containing from 1 to about 12 carbon atoms and optionally containing one or more ether oxygen atoms, Z is selected from F, CF3 and CF2CF3, Y is selected from H, F and SF5, and X is selected from H, F, SF5, and I, provided that when Y is F, X is F, when Y is SF5, X is SF5, and when Y is H, X is H or I.

Abstract: The present invention relates to a catalyst for producing 1,1-difluoroethane (HCFC-152a) and producing method thereof. More particularly, it is to provide the catalyst prepared by impregnating palladium on the active carbon pretreated with an aqueous hydrogen fluoride solution and an aqueous hydrogen chloride solution in series and its use in the production of 1,1-difluoroethane (HCFC-142b) by dehydrochlorinating 1,1-difluoro-1-chloroethane at 240-300° C. in the supplying molar ratio of 2-6 (H2/HCFC-142b) with maximizing a selectivity toward the product of HCFC-152a.

Abstract: A composition containing less than 95 mol % of a trihydrofluorinated saturated hydrocarbon represented by the following formula (I) Rf1—R1—Rf2  (I) (wherein R1 represents a carbon chain in which CHF and CH2 are bound, and Rf1 and Rf2 are bound to each other to form a ring by a perfluoroalkylene chain of 2 to 4 carbon atoms) and the balance of a tetrahydrofluorinated saturated hydrocarbon having the same carbon number and the same carbon structure as the trihydrofluorinated saturated hydrocarbon, as represented by the following formula (II) Rf1—R2—Rf2  (II) (wherein R2 represents a carbon chain in which CH2 and CH3 are bound, and Rf1 and Rf2 are as defined above) is provided as a composition containing, in a high proportion, trihydrofluorocarbon, a hydrofluorocarbon (HFC) known to have a small global heating coefficient, which has less influence on the global environment, shows less toxicity to animals, and is chemically stable.

Abstract: CF3CHFCHF2 production is disclosed which involves reacting CF3CF═CHF with HF at an elevated temperature over a catalyst selected from the group consisting of aluminum fluoride, fluorided alumina, metals supported on aluminum fluoride, metals supported on fluorided alumina and catalysts comprising trivalent chromium. Also disclosed is enrichment of CF3CF═CHF from a starting mixture containing CF3CF═CHF and CF3CH═CF2 which involves reacting said starting mixture with HF at an elevated temperature over a catalyst consisting essentially of carbon, a catalyst consisting essentially of metal halides supported on carbon, a catalyst consisting essentially of Cr2O3, or mixtures thereof (provided that when Cr2O3 is present the temperature is about 250° C. or less) to produce a product mixture containing CF3CH2CF3 and unreacted CF3CF═CHF wherein the mole ratio of CF3CF═CHF to CF3CH═CF2 is greater than the ratio thereof in the starting mixture.

Abstract: Disclosed are azeotropic compositions comprising CF3CHFCF3 and HF. Also disclosed are compositions and a process for producing compositions comprising (c1) CF3CHFCF3, CF3CH2CF3, or CHF2CH2CF3, and (c2) at least one saturated halogenated hydrocarbon and or ether having the formula: CnH2n+2−a−bClaFbOc wherein n is an integer from 1-4, a is an integer from 0-2n+1, b is an integer from 1-2n+2a, and c is 0 or 1, provided that when c is 1 then n is an integer from 2-4, and provided that component (c2) does not include the selected component (c1) compound, wherein the molar ratio of component (c2) to component (c1) is between about 1:99 and a molar ratio of HF to component (c1) in an azeotrope or azeotrope-like composition of component (c1) with HF.

Abstract: A process for producing 1,1,1-trifluoroacetone includes the step of conducting a hydrogenolysis of a halogenated trifluoroacetone, which is represented by the general formula (1), by a hydrogen gas in the presence of a catalyst containing a transition metal, where X represents a chlorine, bromine or iodine, and n represents an integer from 1 to 3. It is possible to obtain 1,1,1-trifluoroacetone with a high yield by using the special catalyst.

Abstract: A liquid phase process is disclosed for producing halogenated alkane adducts of the formula: CAR1R2CBR3R4 (where A, B, R1, R2, R3, and R4 are as defined in the specification) which involves contacting a corresponding halogenated alkane, AB, with a corresponding olefin, CR1R2═C3R4 in a dinitrile or cyclic carbonate ester solvent which divides the reaction mixture into two liquid phases and in the presence of a catalyst system containing: (i) at least one catalyst selected from monovalent and divalent copper; and optionally (ii) a promoter selected from aromatic or aliphatic heterocyclic compounds which contain at least one carbon-nitrogen double bond in the heterocyclic ring. When hydrochlorofluorocarbons are formed, the chlorine content may be reduced by reacting the hydrochlorofluorocarbons with HF. New compounds disclosed include CF3CF2CCl2CH2CCl3, CF3CCl2CH2CH2Cl and CF3CCl2CH2CHClF. These compounds are useful as intermediates for producing hydrofluorocarbons.

Abstract: A highly selective process is disclosed for the hydrogenolysis of 2,2-dichlorohexafluoropropane (i.e., CFC-216aa or CF3CCl2CF3) to 2,2-dihydrohexafluoropropane (i.e., HFC-236fa or CF3CH2CF3) and 2-chloro-2-hydrohexafluoropropane (i.e., 226da or CF3CHClCF3). The process involves reacting the starting material with hydrogen at an elevated temperature of about 300° C. or less in the presence of a catalyst containing a catalytically effective amount of palladium supported on a support of fluorinated alumina and/or aluminum fluoride.

Abstract: Catalytic hydrogenolysis of fluorohalocarbons (e.g., CFCs) and fluorohalohydrocarbons (e.g., HCFCs), using low-phosphorous, low-sulfur catalysts of Re, Co, Ni, Ru, Rh, Pd, Os, Ir, and/or Pt on carbon. Preferred catalysts are acid-washed and also have a low content of potassium, sodium and iron.

Abstract: The invention relates to the preparation of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa), useful as an intermediate in the production of 1,1,1,3,3-pentafluoropropane (HFC-245fa). The invention further relates to a process for the preparation of HFC-245fa comprising reacting HCFC-235fa with hydrogen in the presence of a reduction catalyst wherein the said HCFC-235fa is prepared by reacting CCl3CHCCl3 with hydrogen fluoride in the presence of fluorination catalyst in either the liquid phase or the vapor phase.

Abstract: A production method in which reaction processes are divided into two regions comprising one reaction region where mainly perchloroethylene is made to react with HF in a vapor phase in the presence of a catalyst and the other reaction region where HCFC-123 (CF3CHCl2) and/or HCFC-124 (CF3CFHCl) is made to react with HF in a vapor phase in the presence of a catalyst, the former region being kept at a higher pressure and the latter region at a lower pressure during the reaction procedure. By this method it is possible to keep the conversion of perchloroethylene at a high level while securing the life of a catalyst, and it is also possible to raise the selectivity of HFC-125. This is a method of producing HFC-125 in which the content of CFC-115 is lowered to not more than 15 vol % of the total amount of HFC-125 and CFC-115, and then CFC-115 is made to react with hydrogen in the presence of a catalyst.

Abstract: The invention relates to a method for producing 1,1,2,2,3,3,4-heptafluorocyclopentane. This method includes the step of reducing 1,1-dichlorooctafluorocyclopentane by hydrogen in the presence of a hydrogenation catalyst. This catalyst contains at least one first metal selected from metals of 8, 9, and 10 groups of periodic table, such as iron, cobalt, palladium, platinum, rhodium, ruthenium, iridium, and osmium. According to this method, it is possible to produce 1,1,2,2,3,3,4-heptafluorocyclopentane with high yield and high selectivity.

Abstract: A process for the production of a hydrofluoroalkane is disclosed which comprises contacting a halofluorocarbon or hydrohalofluorocarbon with hydrogen at elevated temperature in the presence of a hydrogenation catalyst which comprises palladium and an alkali metal carried on a support.

Abstract: The present invention concerns a lubricant for improving the gliding properties of skis and its application to skiing. The lubricant possesses an elevated molecular weight but has a very low melting point. Furthermore, the lubricant does not crystallize easily and thus remains oily or waxy also at low temperatures. The lubricant is constituted of four perfluorinated chains attached to a hydrogenated core in a symmetrical arrangement in such a manner that a tetra-substituted derivative or tetrakis derivative is formed according to the following formula ##STR1## wherein each R.sub.x group can be the same or different and comprises a perfluorinated alkyl group.

Abstract: A process is disclosed for producing the hydrofluorocarbon CF.sub.3 CH.dbd.CF.sub.2. The process involves dehydrofluorinating CF.sub.3 CH.sub.2 CF.sub.3 at an elevated temperature in the vapor phase over a catalyst of (1) aluminum fluoride, (2) fluorided alumina, (3) metal supported on a trivalent aluminum compound containing fluoride anion, (4) lanthanum fluoride, (5) fluorided lanthanum oxide, (6) metal supported on a trivalent lanthanum compound containing fluoride anion, (7) trivalent chromium compounds and/or (8) catalysts of (a) at least one compound selected from the oxides, fluorides and oxyfluorides of magnesium, zinc and mixtures of magnesium and zinc, and optionally (b) at least one compound selected from the oxides, fluorides and oxyfluorides of aluminum, provided that the atomic ratio of aluminum to the total of magnesium and zinc in said catalyst is about 1:4, or less, to produce a product containing CF.sub.3 CH.dbd.CF.sub.2 and HF. The CF.sub.3 CH.dbd.CF.sub.

Abstract: A manufacturing method for 1,1,1,3,3-pentafluoropropane in which the method is composed of:step A wherein 2,3-dichloro-1,1,1,3,3-pentafluoropropane is reduced with hydrogen under the presence of hydrogenation catalyst in gaseous phase;step B wherein all of the products of the said step A are introduced into a cooler condenser, so that either a component of hydrogen and hydrogen chloride as non-condensation component and another compoment of 1,1,1,3,3-pentafluoropropane as condensation components or a component of hydrogen as non-condensation component and another component of hydrogen chloride and 1,1,1,3,3-pentafluoropropane as condensation component are obtained;step C wherein hydrogen is separated from the non-condensation component of the said step B, and it is recycled to the said step A; andstep D wherein 1,1,1,3,3-pentafluoropropane is separated from the condensation component of the said step B.

Abstract: In order to purify a crude pentafluoroethane (F125) containing chloropentafluoroethane (F115), it is subjected to a heat treatment in the presence of hydrogen, the treatment being carried out at a temperature at least equal to 550.degree. C. and with an H.sub.2 /F115 molar ratio of at least 10.

Abstract: A process is disclosed for producing the hydrofluorocarbon CF.sub.3 CH.sub.2 CHF.sub.2. The process involves dehydrofluorinating CF.sub.3 CH.sub.2 CF.sub.3 at an elevated temperature in the vapor phase over a catalyst of (1) aluminum fluoride, (2) fluorided alumina, (3) metal supported on a trivalent aluminum compound containing fluoride anion, (4) lanthanum fluoride, (5) fluorided lanthanum oxide, (6) metal supported on a trivalent lanthanum compound containing fluoride anion, (7) trivalent chromium compounds and/or (8) catalysts of (a) at least one compound selected from the oxides, fluorides and oxyfluorides of magnesium, zinc and mixtures of magnesium and zinc, and optionally (b) at least one compound selected from the oxides, fluorides and oxyfluorides of aluminum, provided that the atomic ratio of aluminum to the total of magnesium and zinc in said catalyst is about 1:4, or less, to produce a product containing CF.sub.3 CH.dbd.CF.sub.2 and HF; and reacting the CF.sub.3 CH.dbd.CF.sub.

Abstract: Processes for decreasing the chlorine to carbon ratio for halogenated hydrocarbons containing chlorine and from 1 to 6 carbon atoms, in the presence of a catalyst are disclosed. The processes are each characterized by employing a catalyst comprising ruthenium on a support of (i) fluorided alumina, (ii) aluminum fluoride, or (iii) fluorides of Zn, Mg, Ca, Ba, Y, Sm, Eu, and/or Dy. Also disclosed are multiphase catalyst compositions of ruthenium supported on fluorides of Zn, Mg, Ca, Ba, Y, Sm, Eu and/or Dy.

Abstract: The present invention relates to a process for the reduction dechlorination of ClCF.sub.2 CFClCF.sub.2 Cl to HCF.sub.2 CHFCF.sub.2 H comprising the step of contacting 1,2,3-trichloropentafluoroethane and H.sub.2 over a catalyst selected from the group consisting of palladium, platinum, ruthinium, rhodium, iridium and mixtures thereof under reaction conditions sufficent to produce a product stream containing 1,1,2,3,3-pentafluoropropane. The present invention further relates to a three step process wherein the ClCF.sub.2 CFClCF.sub.2 Cl to be reduced is synthesized by:(a) reacting HF with a compound of formula I: XCH.dbd.CYCH.sub.2 X, where X is H, Cl, or F, Y is H or Cl;to give a compound of formula II: CH.sub.2 XCFYCH.sub.2 X, where X and Y are the same as in the compound of formula I:(b) chlorinating the compound of formula II to give a compound of formula III: CCl.sub.3-m F.sub.m CFClCCl.sub.3-m F.sub.m where m is zero or 1, and(c) fluorinating the compound of formula III to give CClF.sub.2 CFClCF.sub.

Abstract: A process for the production of difluoromethane which comprises reacting a compound of formula XYCF.sub.2 wherein X and Y are each H, Cl or Br but at least one of X and Y is an atom other than hydrogen, and in particular chlorodifluoromethane, with hydrogen at elevated temperature in the presence of a hydrogenation catalyst, in particular a catalyst comprising palladium carried on an active carbon support.

Abstract: A process for the preparation of 1,1,2,2,3-pentafluoropropane is provided. In the process of the present invention, 1,3-dichloro-1,1,2,2,3-pentafluoropropane is catalytically reduced, using a platinum group metal supported on alumina, to 1,1,2,2,3-pentafluoropropane.

Abstract: The purification of pentafluoroethane (HFC-125) which is composed of a process A, in which an unpurified mixture (1), containing at least chloropentafluoroethane (CFC-115) and pentafluoroethane (HFC-125) is reacted with hydrogen (4) in the presence of a catalyst in gas phase to reduce the said chloropentafluoroethane (CFC-115); and a process B, in which a reaction mixture produced by the preceding reaction is separated into a first mixture (3) composed mainly of hydrogen and a second mixture (2), composed mainly of pentafluoroethane (HFC-125). In this method, purification is performed by adding the said first mixture (3) to the said unpurified mixture (1) in a state that the hydrogen chloride is removed from the first mixture (3) in process B until the level of hydrogen chloride drops to 0.

Abstract: A production method in which reaction processes are divided into two regions comprising one reaction region where mainly perohloroethylene is made to react with HF in a vapor phase in the presence of a catalyst and the other reaction region where HCFC-123 (CF.sub.3 CHCl.sub.2) and/or HCFC-124 (CF.sub.3 CFHCl) is made to react with HF in a vapor phase in the presence of a catalyst, the former region being kept at a higher pressure and the latter region at a lower pressure during the reaction procedure. By this method it is possible to keep the conversion of perchloroethylene at a high level while securing the life of a catalyst, and it is also possible to raise the selectivity of HFC-125. This is a method of producing HFC-125 in which the content of CFC-115 is lowered to not more than 15 vol % of the total amount of HFC-125 and CFC-115, and then CFC-115 is made to react with hydrogen in the presence of a catalyst.

Abstract: This invention relates to a process for the hydrogenolysis of halogenated hydrocarbons containing fluorine together with chlorine and/or bromine.

Abstract: A manufacturing method for 1,1,1,3,3-pentafluoropropane by reducing 2,3-dichloro-1,1,1,3,3-pentafluoropropane as a raw material with hydrogen under the presence of a catalyst in a gaseous phase to produce 1,1,1,3,3-pentafluoropropane where a hydrogenation catalyst is used composed of palladium and at least one kind of additional metal selected from the group of silver, gold, copper, zinc, rhenium, cobalt, nickel, iridium, ruthenium, rhodium, tantalum, niobium, molybdenum, osmium and tungsten.

Abstract: As replacements for chlorofluorcarbons, hydro(chloro)fluorocarbons are synthesized by hydrogenating chlorofluorocarbons over a Pd/ZnO/.gamma.--Al.sub.2 O3 catalyst. The ZnO is partially reduced before use and assists the Pd to function catalytically for days instead of hours despite the evolution of halogen.

Abstract: A method for producing a hydrofluorocarbon of the formula H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with a reducing agent in a gas phase.

Abstract: The invention relates to a method of preparing a saturated hydrofluorocarbon represented by C.sub.n H.sub.p F.sub.z, by reducing a chlorofluorocarbon or hydrochlorofluorocarbon represented by C.sub.n H.sub.x Cl.sub.y F.sub.z by hydrogen in the presence of a catalyst having palladium and bismuth, wherein "n" is an integer within a range from 3 to 6, "x" is an integer within a range from 0 to 2n, each of "y" and "z" is an integer within a range from 1 to 2n+1, x+y+z=2n+2 or 2n, p=x+y when x+y+z=2n+2, and p=x+y+2 when x+y+z=2n. The catalyst has a long lifetime in the reduction. According to the invention, conversion of the chlorofluorocarbon or hydrochlorofluorocarbon is high, and the saturated hydrofluorocarbon is prepared with a high yield and a high selectivity.

Abstract: This invention is related to the preparation of hydrofluorocarbons (HFCs). Specifically, it relates to the manufacture of 1,1,1,3,3-pentafluoropropane, CF.sub.3 CH.sub.2 CF.sub.2 H (HFC-245fa) by the steps comprising (1) the formation of CCl.sub.3 CH.sub.2 CCl.sub.3 by the reaction of CCl.sub.4 with vinylidene chloride; (2) the conversion of CCl.sub.3 CH.sub.2 CCl.sub.3 to CF.sub.3 CH.sub.2 CF.sub.2 Cl by reaction with HF in the presence of a fluorination catalyst, selected from TiCl.sub.4, SnCl.sub.4 or mixtures thereof; and (3) reduction of CF.sub.3 CH.sub.2 CF.sub.2 Cl to CF.sub.3l CH.sub.2 CF.sub.2 H.

Abstract: 2,2,3-trichloro-1,1,1,3,3-pentafluoropropane is used as a raw material, to which not less than 4.5 equivalent parts of hydrogen are added to effect a hydrogenation reaction in the presence of a noble metal catalyst, particularly a palladium catalyst, by the vapor phase method to manufacture 1,1,1,3,3-pentafluoropropane. Further, propane, propene, and hexachloropropene, etc. are chlorofluorinated in the presence of a metal catalyst to produce 2,2,3-trichloro-1,1,1,3,3-pentafluoropropane, then this compound is reduced with hydrogen in the presence of a noble metal catalyst to produce 1,1,1,3,3-pentafluoropropane. 2,2,3-trichloro-1,1,1,3,3-pentafluoropropane and 1,1,1,3,3-pentafluoropropane can thus be efficiently and economically produced.

Abstract: A method is proposed for producing 1,1,1,3,3-pentafluoropropane, in which 1,1,3,3,3-pentafluoropropene is reduced at a temperature between 40.degree. C. and 300.degree. C. by reacting it with hydrogen in a gas phase in the presence of a palladium catalyst. Further, a method is proposed for producing 1,1,1,3,3-pentafluoropropane and/or 1,1,3,3,3-pentafluoropropene, in which the raw material 2-chloro-1,1,3,3,3-pentafluoropropene is hydrogenated especially at a temperature between 30.degree. C. and 450.degree. C. in the presence of a catalyst composed of at least one metal selected from palladium, platinum and rhodium. Further, a method is proposed of producing 1,1,3,3,3-pentafluoropropene, in which 1,1,1,3,3-pentafluoro-2,3-dichloropropane is dechlorinated by using hydrogen in the presence of a metal oxide catalyst. Based on these production methods, 1,1,1,3,3-pentafluoropropane and/or 1,1,3,3,3-pentafluoropropene can thus be produced with high yield rates.

Abstract: The invention relates to the purification of pentafluoroethane (F125) containing chloropentafluoroethane (F115) by vapor-phase catalytic hydrogenolysis.A catalyst based on palladium deposited on aluminium trifluoride is employed.

Abstract: The invention relates to the gas-phase hydrogenolysis of chlorofluorocarbons or of chlorofluorohydrocarbons in the presence of a palladium-based catalyst deposited on a support in which sulfur is incorporated into the catalyst in order to stabilize the catalytic activity.

Abstract: A method for producing 1,1,1,3,3-pentafluoropropane, which comprises reducing at least one chlorofluorohydrocarbon selected from the group consisting of CF.sub.3 CClXCClF.sub.2 wherein X is a H atom or a Cl atom, and CF.sub.3 CCl.dbd.CF.sub.2, with hydrogen in the presence of a reduction catalyst comprising, as a first component, at least one metal selected from the group consisting of Ru, Rh, Pd and Pt, and, as a second component, at least one metal selected from the group consisting of Ni, Co, La, Re, W, Ta, Nb, Ti, Zr, Mo, Cu, Ag and Au.

Abstract: There are provided production methods of 1,1,1,3,3-pentafluoropropane characterized in that 1,1,1,3,3-pentafluoro-2,3-dichloropropane is reacted with hydrogen fluoride in the presence of a noble metal catalyst; of 1,1,1,3,3-pentafluoro-2-halogeno-3-chloropropane characterized in that the halogenated propene indicated as general formula I is fluorinated in the presence of antimony trihalogenide and/or antimony pentahalogenide by hydrogen fluoride of mole ratio of or over five times the said antimony halogenide in a liquid phase; and of 1,1,1,2,3,3-hexaohloropropene characterized in that 1,1,1,2,2,3,3-heptachloropropane is reacted with an aqueous solution of alkali metal hydroxide in the presence of a phase transfer catalyst. Therefore, an industrial manufacturing method which is possible to obtain the objective product easily at low cost and high yield can be provided.

Abstract: A method for producing a hydrofluorocarbon of the formula H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with hydrogen at a temperature of not higher than 450.degree. C. in a gas phase.

Abstract: A carbon-supported metal hydrodehalogenation catalyst is disclosed which is prepared by impregnating a carbon support having an ash content of less than about 0.2% by weight (based on the weight of said support) with a combination of metals consisting essentially of from 5 to 95 parts by weight gold and from 95 to 5 parts by weight total ruthenium, rhodium, palladium, osmium, iridium, and/or platinum; and treating said impregnated carbon composition to dry the composition and to provide metal of said combination in a reduced state, the impregnation of treatment being accomplished at a temperature of about 350.degree. C. or less. The advantageous use of the catalyst for the catalytic hydrogenolysis of fluorohalocarbons and fluorohalohydrocarbons is also disclosed.

Abstract: A method for producing a hydrofluorocarbon of the formula a H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with an alkali metal hydroxide under action of an alcohol mixture comprising a primary alcohol and a secondary alcohol.

Abstract: A process is disclosed for producing CF.sub.3 CH.sub.2 F from CF.sub.3 CHClF by catalytic chlorination of CF.sub.3 CHClF to CF.sub.3 CCl.sub.2 F at elevated temperature, and reaction of CF.sub.3 CCl.sub.2 F with H.sub.2 in the presence of a carbon-supported precious metal catalyst at a temperature of from about 100.degree. C. to 250.degree. C. Suitable catalysts for the chlorination include carbon catalysts and catalysts wherein halides of certain metals (La, Zn, Cu, Cr, Ru, Rh, and/or Pt) are supported on carbon.

Abstract: A new 3,3-dichloro-1,1,1,2,2,4,4,5,5,5-decafluoropentane as a precursor of alternatives of refrigerants, etc.A method to obtain the target products at high yield and high selectivity by reacting tetrafluoroethylene and difluorodichloromethane under the Lewis acid catalyst to produce the new compound and an economical method in a continuous reaction state.A production method of 1,1,1,2,2,4,4,5,5,5-decafluoropentane at high yield by reducing 3,3-dichloro-1,1,1,2,2,4,4,5,5,5-decafluoropentane.

Abstract: A method for producing a hydrofluorocarbon of the formula a H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with an alkali metal hydroxide under action of an alcohol mixture comprising a primary alcohol and a secondary alcohol.

Abstract: A process is disclosed for producing a product comprising CCl.sub.2 FCF.sub.3 substantially free of CClF.sub.2 CClF.sub.2. The process includes (i) contacting a mixture of perhalogenated hydrocarbons which is essentially free of CClF.sub.2 CClF.sub.2 and comprises from 20 to 80 mole percent CCl.sub.3 CF.sub.3 and from 5 to 80 mole percent total of at least one compound selected from the group consisting of CCl.sub.2 .dbd.CCl.sub.2, CCl.sub.3 CCl.sub.2 F, CCl.sub.2 FCCl.sub.2 F and CClF.sub.2 CCl.sub.3 with HF and optionally Cl.sub.2 (provided that when the mixture comprises CCl.sub.2 .dbd.CCl.sub.2, Cl.sub.2 is supplied in a mole ratio of Cl.sub.2 to CCl.sub.2 .dbd.CCl.sub.2 of at least 1:2) over a fluorination catalyst at an elevated temperature no higher than 375.degree. C., to provide a product mixture comprising CCl.sub.2 FCClF.sub.2 and C.sub.2 Cl.sub.2 F.sub.4 wherein the ratio of CClF.sub.2 CClF.sub.2 to CCl.sub.2 FCF.sub.3 is less than about 1:50; (ii) recovering said C.sub.2 Cl.sub.2 F.sub.

Abstract: A process for producing a hydrogen-containing 2,2-difluoropropane of the following formula (2), which comprises subjecting a 2,2-difluoropropane of the following formula (1) to hydrogen reduction:C.sub.3 H.sub.a Cl.sub.b F.sub.c (1)C.sub.3 H.sub.a+x Cl.sub.b-y F.sub.c-z (2)wherein a, b, c, x, y and z are integers satisfying the following conditions:a.gtoreq.0, b.gtoreq.1, c.gtoreq.2, x.gtoreq.1, y.gtoreq.0, z.gtoreq.0, a+b+c=8, x=y+z b-y.gtoreq.0, and c-z.gtoreq.2.

Abstract: Saturated, fluorine-containing and chlorine-free hydrocarbons are prepared by catalytically hydrogenating unsaturated, fluorine- and chlorine-containing hydrocarbons at temperatures above 80.degree. C. in the gas phase.

Abstract: A process is disclosed for the catalytic hydrogenolysis of at least one starting material selected from saturated acyclic halofluorocarbons and hydrohalofluorocarbons containing three or four carbon atoms, and from one to five non-fluorine halogens (each non-fluorine halogen being independently chlorine or bromine) wherein all non-fluorine halogen substituents are contained on end carbons. The process involves reacting the starting material with hydrogen at an elevated temperature of about 300.degree. C. or less in the presence of a catalyst containing a catalytically effective amount of palladium supported on carbon to produce a hydrogenolysis product wherein over 80 mole percent of the hydrogenolysis product is a saturated compound having the same distribution of fluorine substituents as the starting material. The carbon support has an ash content of less than about 0.5% by weight.