WO2000003962A1 - Procede pour produire du fluoroethane - Google Patents
Procede pour produire du fluoroethane Download PDFInfo
- Publication number
- WO2000003962A1 WO2000003962A1 PCT/JP1999/003868 JP9903868W WO0003962A1 WO 2000003962 A1 WO2000003962 A1 WO 2000003962A1 JP 9903868 W JP9903868 W JP 9903868W WO 0003962 A1 WO0003962 A1 WO 0003962A1
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- WO
- WIPO (PCT)
- Prior art keywords
- reaction
- hcfc
- catalyst
- fluorination
- fluorinated
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 19
- UHCBBWUQDAVSMS-UHFFFAOYSA-N fluoroethane Chemical compound CCF UHCBBWUQDAVSMS-UHFFFAOYSA-N 0.000 title abstract 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 30
- 239000011737 fluorine Substances 0.000 claims abstract description 30
- BOUGCJDAQLKBQH-UHFFFAOYSA-N 1-chloro-1,2,2,2-tetrafluoroethane Chemical compound FC(Cl)C(F)(F)F BOUGCJDAQLKBQH-UHFFFAOYSA-N 0.000 claims abstract description 29
- OHMHBGPWCHTMQE-UHFFFAOYSA-N 2,2-dichloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)C(Cl)Cl OHMHBGPWCHTMQE-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229950011008 tetrachloroethylene Drugs 0.000 claims abstract description 28
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 claims abstract description 27
- QCMJBECJXQJLIL-UHFFFAOYSA-L chromium(6+);oxygen(2-);difluoride Chemical compound [O-2].[O-2].[F-].[F-].[Cr+6] QCMJBECJXQJLIL-UHFFFAOYSA-L 0.000 claims abstract description 14
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims abstract description 5
- 239000003054 catalyst Substances 0.000 claims description 49
- 238000003682 fluorination reaction Methods 0.000 claims description 49
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 23
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 17
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 16
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 16
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 5
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 150000008282 halocarbons Chemical class 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims 1
- 239000011541 reaction mixture Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 49
- 239000007858 starting material Substances 0.000 description 20
- 239000011651 chromium Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- CYXIKYKBLDZZNW-UHFFFAOYSA-N 2-Chloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)CCl CYXIKYKBLDZZNW-UHFFFAOYSA-N 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- RFCAUADVODFSLZ-UHFFFAOYSA-N 1-Chloro-1,1,2,2,2-pentafluoroethane Chemical compound FC(F)(F)C(F)(F)Cl RFCAUADVODFSLZ-UHFFFAOYSA-N 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000019406 chloropentafluoroethane Nutrition 0.000 description 3
- XKKQWEPXPQZMNH-UHFFFAOYSA-M chromium(3+);oxygen(2-);fluoride Chemical compound [O-2].[F-].[Cr+3] XKKQWEPXPQZMNH-UHFFFAOYSA-M 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 2
- BAMUEXIPKSRTBS-UHFFFAOYSA-N 1,1-dichloro-1,2,2,2-tetrafluoroethane Chemical compound FC(F)(F)C(F)(Cl)Cl BAMUEXIPKSRTBS-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 description 2
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 2
- 238000010574 gas phase reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000282693 Cercopithecidae Species 0.000 description 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 125000001309 chloro group Chemical class Cl* 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000779 depleting effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000895 extractive distillation Methods 0.000 description 1
- 238000004334 fluoridation Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- -1 proceeds Chemical compound 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/26—Chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/132—Halogens; Compounds thereof with chromium, molybdenum, tungsten or polonium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/21—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms with simultaneous increase of the number of halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
Definitions
- HCFC-125 1,1,1,2,2-pentafluoroethane
- HCFC-123 2-alk ⁇ -row 1,1,1, 2-tetrafluoroethane
- HCFC-123 Z or 2,2-dichloro-1,1,1-trifluoroethane
- HFC-125 Since HFC-125 has an ozone depletion potential of 0, it is used as an alternative refrigerant component gas for 1.1-chloro-1,1-difluoromethane (HCFC-22) refrigerant.
- HCFC-22 1.1-chloro-1,1-difluoromethane
- a patent was issued in the United States to control the production of CFCs (which are currently prohibited because of the risk of damaging the ozone layer) in the production of HFC-125 from HCFC-124.
- Patent manufacturing method using chromium oxide (Cr 2 0 3) as a catalyst in the 5,475,167 discloses are described. The method described in this publication states that the conversion to HC FC-125 must be 50% or more.
- the catalyst (NH 4 ) 2 Cr 2 ⁇ ⁇ Cr 2 ⁇ 3 catalyst having a high specific surface area prepared, or C_ ⁇ it uses a Cr 2 0 3 catalyst was treated with H 2, H 2 0.
- the amount of CFCs produced is 0.3 mol1 ⁇ 2 with respect to HFC-125.
- JP-A-6-247883 discloses that a catalyst obtained by fluorinating alumina by 70% or more in the fluorination reaction of HCFC-123 or HCFC-124 is used to reduce the amount of CFCs produced.
- a method for producing HF C-125 is disclosed. According to this production method, the amount of CFCs generated in the HCFC-123 fluorination reaction of alumina was 350 at the reaction temperature. In C, it is 0.5%, but the ratio of CFCs ZHFC-125 is as large as about 1.1%.
- JP-A-8- two hundred sixty-eight thousand nine hundred and thirty-three discloses a fluorination method of tetrachlorethylene ⁇ mouth ethylene using a mixed catalyst of MgO and Cr 2 0 3. Wherein the examined had some mixed catalyst Nitsu for changing the ratio of MgO amount and Cr 2 0 3 amount is performed. ⁇ ? For catalysts with a Cr content that minimizes the 3 ⁇ 4? (— 125 ratio, the conversion of tetrachloroethylene is about 9 B% in reaction 320, and the CFC / HFC-125 ratio is 2.9%.
- the present invention has been made in view of the above circumstances, and an object thereof is to include tetrachloroethylene or HCFC-123 or HCFC-124 as a starting material and HFC-125 as a main reaction product by a fluorination reaction.
- the method for producing a fluorinated ethane of the present invention comprises the step of fluorinating at least one selected from the group consisting of tetrachloroethylene, HCFC-123 and HCFC-124 with hydrogen fluoride to obtain a fluorinated ethane containing HFC-125 as a main component.
- the method is characterized in that chromium oxide, which has a fluorine content of 30% by weight or more, is used as a catalyst when producing tutanethane.
- the fluorinated ethane to be produced usually contains not only HFC-125 but also HCF C-123 and / or HCFC-124 as described later.
- the starting material is selected from tetrachloroethylene, HCFC-123 and HCFC-124, each of which is used alone or in combination of two or more.
- the HCFC-124 can be obtained, for example, by reduction of HCFC-123 by reduction of fluoridation or CFC-114a (2,2-dic ⁇ -row 1,1,1,2-tetrafluoroethane).
- the HCFC-123 may be, for example, fluorine of tetrachloroethylene or chlorination of HCFC-133a (2-chloro-1,1,1-trifluoroethane) or CFC-113a. (1,1,1-trichloro-2,2,2-trifluoroethane).
- the above-mentioned tetrachloroethylene is also produced by an industrially well-known method of, for example, chlorinating a hydrocarbon or a chlorine derivative thereof by thermal decomposition.
- the ratio of CFCs / HFC-125 cannot be kept small by the conventional methods.
- the mechanism of by-products of CFCs is as described below.
- the starting material is HCFC-124
- the conversion to HCFC-125 cannot be 100% under normal reaction conditions, and unreacted HCFC-124 is present in the reactor.
- the unreacted HCFC-124 reacts with by-produced HC1 to produce HCFC-123.
- the starting material is HCFC-123
- the organic matter at the outlet of the reactor after the fluorination reaction is mainly chlorinated by fluorinated HCFC-124 and HFC-125 and by-product HC1. Tetrachloroethylene and unreacted HCFC-123.
- the organic matter at the outlet of the reactor is mainly HCFC-123, HCFC-124, and HFC-125.
- the HFC-125-based gas is separated to improve the yield, and the remainder is recycled to the reactor. Therefore, irrespective of the amount of the starting material, the fluorination of a mixture of tetrachloroethylene, HCFC-123 and HCFC-124 mainly proceeds, although the amount is large or small in the reactor. For this reason, HCFC-133a and HFC-134a (1,1,1,2-tetrafluoroethane), which are by-products when tetrachloroethylene is used as a raw material, and CFC-11 of CFCs 3 a. CFC— 1 1 a. CFC— 1 15 is generated.
- CFCs produced in these reactions are not converted to HFC-125 by the fluorination reaction, which is a loss in production.
- reaction gas is recycled, all CFC-114a is converted to CFC-115.
- This CFC-115 has a boiling point close to that of HFC-125 and a specific volatility close to 1, making it difficult to separate it with a normal rectification column. To remove these, equipment such as extractive distillation is required separately, It causes cost increase.
- CFCs are also substances whose production is banned as an ozone depleting substance as described above, and their release must be minimized in order to protect the global environment. For these reasons, the amount of CFCs produced, including CFC-115, must be reduced as much as possible.
- the present inventors have conducted intensive studies on the fluorination reaction of tetrachloroethylene, HCFC-123, and HCFC-124. As a result, the fluorination reaction was performed using a chromium oxyfluoride catalyst having a fluorine content of 30% by weight or more.
- Class ZHFC-125 ratio (in the case of tetrachloroethylene raw material, the ratio of CFCs to the total of HCFC-123, HCFC-124, and HFC-125) is 0 in the reaction iK300 C in the case of tetrachloroethylene raw material.
- the present invention was found to be 5% or less, and that the HCFC-123 raw material and HCFC-12 raw material can be reduced to 1.0% or less and 0.1% or less at a reaction temperature of 315 ° C, respectively. Reached.
- such an oxide film is further fluorinated to a fluorine content of 30% by weight or more, and is subjected to a reaction. Therefore, as an example, when the reactor is filled with chromium oxide (unfluorinated), this chromium oxide may be fluorinated at least immediately before the fluorination reaction of the starting material to form chromium fluorinated oxide. In monkey.
- the fluorination of chromium oxide may be performed based on a known method, for example, a method described in JP-A-5-146680.
- oxidized chromium is treated with HF at a high temperature for a long time. Good.
- fluorinated chromium oxide having a fluorine content of 31.4% by weight is obtained.
- chromium oxide fluoride prepared by a method other than the above can also be used as a suitable catalyst. It is chromium oxyfluoride used as a catalyst in the fluorination reaction of halogenated hydrocarbons. That is, the anti-J Iii was a chromium oxyfluoride having a low fluorine content, but when it is used for a long time in the fluorination reaction of the halogenated hydrocarbon, the fluorine content applicable to the present invention becomes 30%. It can be chromium oxide fluoride having a high fluorine content of not less than% by weight.
- the present inventor has found that it is extremely important to fluorinate chromium oxide so that its fluorine content is not less than 30% by weight, not merely fluorinated. According to the findings of the present inventors, the target HFC-125 can be obtained with a high selectivity only when the fluorination rate (fluorine content) of chromium oxide is 30% by weight or more, and the formation of CFCs is sufficiently suppressed. Is done. This preferred range of fluorine content lies between 30 and 45% by weight.
- the specific surface area of the chromium oxyfluoride of the catalyst is not particularly limited, it is usually in the range of 25 m 2 ng to 30 m 2 Zg, preferably 40 m 2 ng to 10 Om 2 .
- Fluorination reaction by HF starting material in the present invention is usually 250 to 40 O e C, preferably carried out at a reaction temperature of 280 to 350 ° C, contact temperature At the same temperature and molar ratio, the higher the reaction temperature, the higher the conversion to HFC-125. However, since the reaction transfer greatly affects the amount of by-products generated, it must be carefully selected.
- the ratio of HF used for the fluorination reaction to the above-mentioned starting materials is not particularly limited in the present invention.
- the molar ratio of HF to tetrachloroethylene, HF to HCFC-124, and HF to HCFC-123 is usually selected in the range of 1.5: 1 to 15: 1, preferably 2: 1 to 9: 1.
- the pressure at which the starting material is reacted with fluorine is not particularly limited, but the separation and purification steps of the product are more preferably performed under pressurized conditions. It is good to decide after putting. In general, the range of the reaction pressure that is often used is 0.01 MPa to 2. OMPaG.
- a gas containing HFC-125 as a main component produced by the fluorination reaction of the starting material is once separated and collected, It is then desirable to recycle the residue containing HCFC-123 and Z or HCFC-124 to the reactor multiple times. This is because the yield of HFC-125 is improved.
- One of the remarkable effects of the present invention is that the production of CFCs is suppressed by this recycling.
- 0.1 mol% to 10 mol of oxygen is added to the starting material as a measure for effectively preventing the deterioration of the catalyst when it becomes a particular problem.
- At least one selected from the group consisting of HCFC-123 and HCFC-124 is selected as the starting material, and when it is fluorinated with hydrogen fluoride, the fluorine content is as high as 30% by weight or more. Since the specified chromium oxyfluoride is used as a catalyst, fluorinated ethane containing HFC-125 as a main component can be produced while minimizing the production of CFCs.
- Female chromium oxide fluoride was prepared as follows. First, 10% aqueous ammonia was added to a 5.7% aqueous solution of chromium nitrate 7652, and the obtained precipitate was filtered and washed, dried in air for 120 hours, and dried for 12 hours to obtain chromium hydroxide. This chromium hydroxide was formed into a pellet having a diameter of 3.0 mm and a height of 3.0 mm, and the pellet was 400 in a nitrogen stream. The mixture was baked at C for 2 hours to obtain an oxidized film.
- Amount of catalyst 1 0 g HCFC- 124 & 5 ONml mi n HFSfifi: 1 0 ONml / mi n W / F o: 4 (g ⁇ sec ⁇ Nm 1 - 1), HF / HCFC- 124 molar ratio: 4 Reaction: 3 15 ° Co
- the reaction was carried out by filling the catalyst into a Hastelloy C ⁇ reaction tube having an inner diameter of 15 mm.
- the reaction gas was washed with water and analyzed by gas chromatography on a Volapack Q column. The results are shown in Table 1 below.
- the fluorination reaction of HCFC-124 was carried out under the same conditions as in Example 1 except that chromium oxyfluoride (fluorine content: 41.5 weight) used in the fluorination reaction of HCFC133a was used. went. The results of the reaction are shown in Table 3 below.
- HCFC-124 was used under the same conditions as in Example 2 except that HCFC-12 was set to 10 ONmlZmin, HF flow rate was set to 20 ONml / min, and WZFo was set to 2 (g ⁇ sec ⁇ Nm1 "O.
- the fluorination reaction was carried out 7. The results of the reaction are shown in Table 5 below.
- the fluorination of HCFC-124 was carried out under the same conditions as in Example 1 except that the catalyst used for the fluorination of chromium oxide was 365 and the time was 155 hours (fluorine content: 25% by weight). The reaction went. The results of the reaction are shown in Table 6 below.
- Example 8 Under the same conditions as in Example 2 except that the HF / HCFC-124 molar ratio was set to 4, the HCFC-124 flow rate was set to 3 ON ml min, and the HF flow rate was set to 120 Nm 1 ⁇ in.
- the results of the reaction are shown in Table 8 below.
- the fluorination reaction was performed under the same conditions as in Example 2 except that the reaction temperature was set at 315. The results of the reaction are shown in Table 10 below.
- Example 7 the fluorination reaction of tetrachloroethylene was carried out under the same conditions as in Example 7, except that the catalyst used was the same as the catalyst used in Comparative Example 1. The results of the reaction are shown in Table 13 below.
- Example 8 In the reaction of Example 8, the same catalyst as that used in Comparative Example 1 was used. The fluorination reaction of tetrachloroethylene was carried out under the same conditions as in Example 8 except that the above conditions were used. The results of the reaction are shown in Table 15 below.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/743,468 US6455745B1 (en) | 1998-07-17 | 1999-07-16 | Manufacturing method for fluorine-containing ethane |
EP99929890.4A EP1110936B2 (en) | 1998-07-17 | 1999-07-16 | Process for producing fluoroethane |
DE69937244.5T DE69937244T3 (de) | 1998-07-17 | 1999-07-16 | Verfahren zur herstellung von fluoroethan |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/203515 | 1998-07-17 | ||
JP20351598A JP4378779B2 (ja) | 1998-07-17 | 1998-07-17 | 含フッ素エタンの製造方法 |
Publications (1)
Publication Number | Publication Date |
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WO2000003962A1 true WO2000003962A1 (fr) | 2000-01-27 |
Family
ID=16475439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1999/003868 WO2000003962A1 (fr) | 1998-07-17 | 1999-07-16 | Procede pour produire du fluoroethane |
Country Status (9)
Country | Link |
---|---|
US (1) | US6455745B1 (ja) |
EP (1) | EP1110936B2 (ja) |
JP (1) | JP4378779B2 (ja) |
KR (1) | KR100415739B1 (ja) |
CN (1) | CN1212297C (ja) |
AT (1) | ATE374738T1 (ja) |
DE (1) | DE69937244T3 (ja) |
ES (1) | ES2293727T3 (ja) |
WO (1) | WO2000003962A1 (ja) |
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GB0525700D0 (en) * | 2005-12-17 | 2006-01-25 | Ineos Fluor Holdings Ltd | Process |
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JP4849058B2 (ja) | 2007-11-21 | 2011-12-28 | ダイキン工業株式会社 | 含フッ素オレフィンの製造方法 |
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ES2879276T3 (es) | 2008-09-05 | 2021-11-22 | Mexichem Fluor Sa De Cv | Catalizador de fluoración fluorado y procedimiento para la producción de hidrocarburos fluorados |
GB0816208D0 (en) | 2008-09-05 | 2008-10-15 | Ineos Fluor Holdings Ltd | Catlyst and process using the catalyst |
JP5418603B2 (ja) | 2009-04-23 | 2014-02-19 | ダイキン工業株式会社 | 2,3,3,3−テトラフルオロプロペンの製造方法 |
ES2643322T3 (es) | 2009-06-03 | 2017-11-22 | The Chemours Company Fc, Llc | Proceso de fabricación del 2,3,3,3-tetrafluoropropeno |
US9284240B2 (en) | 2010-10-22 | 2016-03-15 | Arkema France | Process for the manufacture of 2-chloro-3,3,3-trifluoropropene by gas phase fluorination of pentachloropropane |
CN102617271A (zh) * | 2012-03-05 | 2012-08-01 | 常熟三爱富氟化工有限责任公司 | 五氟乙烷的制备方法 |
JP6806174B2 (ja) * | 2019-02-19 | 2021-01-06 | ダイキン工業株式会社 | 1,1,2−トリフルオロエタン(hfc−143)の製造方法 |
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- 1999-07-16 KR KR10-2001-7000393A patent/KR100415739B1/ko not_active IP Right Cessation
- 1999-07-16 AT AT99929890T patent/ATE374738T1/de not_active IP Right Cessation
- 1999-07-16 CN CNB998083275A patent/CN1212297C/zh not_active Expired - Fee Related
- 1999-07-16 US US09/743,468 patent/US6455745B1/en not_active Expired - Lifetime
- 1999-07-16 EP EP99929890.4A patent/EP1110936B2/en not_active Expired - Lifetime
- 1999-07-16 ES ES99929890T patent/ES2293727T3/es not_active Expired - Lifetime
- 1999-07-16 WO PCT/JP1999/003868 patent/WO2000003962A1/ja active IP Right Grant
- 1999-07-16 DE DE69937244.5T patent/DE69937244T3/de not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
ES2293727T3 (es) | 2008-03-16 |
EP1110936B1 (en) | 2007-10-03 |
ATE374738T1 (de) | 2007-10-15 |
EP1110936B2 (en) | 2015-11-18 |
JP2000034237A (ja) | 2000-02-02 |
CN1212297C (zh) | 2005-07-27 |
KR100415739B1 (ko) | 2004-01-24 |
EP1110936A4 (en) | 2003-07-16 |
EP1110936A1 (en) | 2001-06-27 |
US6455745B1 (en) | 2002-09-24 |
CN1308596A (zh) | 2001-08-15 |
DE69937244T2 (de) | 2008-07-24 |
DE69937244T3 (de) | 2016-03-10 |
KR20010071826A (ko) | 2001-07-31 |
JP4378779B2 (ja) | 2009-12-09 |
DE69937244D1 (de) | 2007-11-15 |
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