WO2005105668A1 - 二フッ化カルボニルの製造方法 - Google Patents
二フッ化カルボニルの製造方法 Download PDFInfo
- Publication number
- WO2005105668A1 WO2005105668A1 PCT/JP2005/007896 JP2005007896W WO2005105668A1 WO 2005105668 A1 WO2005105668 A1 WO 2005105668A1 JP 2005007896 W JP2005007896 W JP 2005007896W WO 2005105668 A1 WO2005105668 A1 WO 2005105668A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oxygen
- gas
- reaction
- reactor
- difluoride
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- IYRWEQXVUNLMAY-UHFFFAOYSA-N carbonyl fluoride Chemical compound FC(F)=O IYRWEQXVUNLMAY-UHFFFAOYSA-N 0.000 title abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 72
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000001301 oxygen Substances 0.000 claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 66
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000006243 chemical reaction Methods 0.000 claims description 74
- 238000000034 method Methods 0.000 claims description 36
- LTVOKYUPTHZZQH-UHFFFAOYSA-N difluoromethane Chemical compound F[C]F LTVOKYUPTHZZQH-UHFFFAOYSA-N 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 15
- 238000004821 distillation Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 11
- 239000012043 crude product Substances 0.000 claims description 11
- 229910001882 dioxygen Inorganic materials 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- AIXAANGOTKPUOY-UHFFFAOYSA-N carbachol Chemical group [Cl-].C[N+](C)(C)CCOC(N)=O AIXAANGOTKPUOY-UHFFFAOYSA-N 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 16
- 239000002994 raw material Substances 0.000 description 13
- 239000006227 byproduct Substances 0.000 description 12
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 description 9
- 229910052759 nickel Inorganic materials 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 235000013024 sodium fluoride Nutrition 0.000 description 8
- 239000011775 sodium fluoride Substances 0.000 description 8
- 238000009835 boiling Methods 0.000 description 7
- 238000003682 fluorination reaction Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000035484 reaction time Effects 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000990 Ni alloy Inorganic materials 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229910001182 Mo alloy Inorganic materials 0.000 description 3
- 229910003296 Ni-Mo Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000002222 fluorine compounds Chemical class 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- DDTIGTPWGISMKL-UHFFFAOYSA-N molybdenum nickel Chemical compound [Ni].[Mo] DDTIGTPWGISMKL-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 101100328843 Dictyostelium discoideum cofB gene Proteins 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910018054 Ni-Cu Inorganic materials 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 2
- 229910018481 Ni—Cu Inorganic materials 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000010574 gas phase reaction Methods 0.000 description 2
- 229910000856 hastalloy Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 2
- 239000011698 potassium fluoride Substances 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 2
- YIWGJFPJRAEKMK-UHFFFAOYSA-N 1-(2H-benzotriazol-5-yl)-3-methyl-8-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carbonyl]-1,3,8-triazaspiro[4.5]decane-2,4-dione Chemical compound CN1C(=O)N(c2ccc3n[nH]nc3c2)C2(CCN(CC2)C(=O)c2cnc(NCc3cccc(OC(F)(F)F)c3)nc2)C1=O YIWGJFPJRAEKMK-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000934 Monel 400 Inorganic materials 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- JAWMENYCRQKKJY-UHFFFAOYSA-N [3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-ylmethyl)-1-oxa-2,8-diazaspiro[4.5]dec-2-en-8-yl]-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]methanone Chemical compound N1N=NC=2CN(CCC=21)CC1=NOC2(C1)CCN(CC2)C(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F JAWMENYCRQKKJY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 229910001515 alkali metal fluoride Inorganic materials 0.000 description 1
- 229910001618 alkaline earth metal fluoride Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- -1 conorto Chemical compound 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- OANFWJQPUHQWDL-UHFFFAOYSA-N copper iron manganese nickel Chemical compound [Mn].[Fe].[Ni].[Cu] OANFWJQPUHQWDL-UHFFFAOYSA-N 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001055 inconels 600 Inorganic materials 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000013212 metal-organic material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000004812 organic fluorine compounds Chemical class 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/80—Phosgene
Definitions
- the present invention relates to a method for producing carbon difluoride.
- Carbonyl difluoride is a useful substance that has applications such as a raw material of an organic fluorine compound and a cleaning gas in the production of semiconductors.
- Non-Patent Document 1 a method for producing carbon monoxide as a raw material is a method based on electrolytic fluorination of carbon monoxide (Patent Document 1).
- Non-Patent Document 1 a method of fluorinating phosgene with hydrogen fluoride in the presence of a solvent or hydrogen fluoride in the presence of a solvent and triethylamine (Patent Document 2), fluorination with sodium fluoride in a solvent (Patent Document 3), fluorination of phosgene with hydrogen fluoride in the gas phase using an activated carbon catalyst (Patent Document 4) is known.
- a method of reacting tetrafluoroethylene (TFE) with oxygen is known (Patent Document 5).
- electrolytic fluorination and direct fluorination which are production methods using carbon monoxide as raw materials, require expensive electrolytic tanks or require large equipment for controlling large reaction heat. This method is not industrially suitable.
- the selectivity of carbon difluoride is not high.
- the method of fluorinating phosgene with hydrogen fluoride in the presence of a solvent and the method of fluorinating phosgene with hydrogen fluoride using an activated carbon catalyst are based on the production of carbon difluoride.
- the difference in boiling point from that of hydrogen is about 1 ° C, which makes separation difficult.
- Methods for fluorinating phosgene with hydrogen fluoride in the presence of a solvent and triethylamine or for fluorinating phosgene with sodium fluoride in the presence of a solvent include the ability to produce carbon difluoride without forming hydrogen chloride. Is produced in large quantities, resulting in the disposal or reuse of Required.
- HCFC22 chlorodifluoromethane
- HFC23 trifluoromethane
- HCFC22 a method of reacting monohalodifluoromethane such as HCFC22 with oxygen
- Non-Patent Document 2 a method of reacting HCFC22 with ozone
- O ⁇ D electronically excited oxygen atoms
- Patent Document 6 only the production of carbon difluoride was confirmed, but the quantification was not performed. There is no description about by-products.
- Non-Patent Document 2 unknown by-products are obtained in addition to difluorinated compounds, in addition to HC1 and C1. Obtained here
- HFC23 is trihalogenated methane like HCFC22 and does not contain chlorine so that HC1 is not generated as a by-product, but its reactivity is very different compared to HCFC22. Things are known. For example, the atmospheric lifespan indicated by the IPCC (acids stronger than O
- Non-Patent Document 4 shows that HCFC22 power is 9 years, HFC23 power is 260 years, and other trihalogenated methane has CHBrF power of 7 years and H
- FC23 is a compound that is more difficult to react than other trihalogenated methanes. Therefore, it is impossible to predict the generation of carbonyl difluoride from HFC23 in the same manner as in Patent Document 6 and Non-Patent Document 2.
- the method of Non-Patent Document 3 is a reaction with a highly excited oxygen atom, which is basically different from the present invention. However, the method of Non-Patent Document 3 is difficult to commercialize industrially, and, like Patent Document 6, is not quantified. Further, according to Non-Patent Document 3, laser excites CO
- O (3 P) is related to the reaction with HFC23 Do not give. It is known that OO) reacts with HFC23 to generate carbon difluoride, and is inactivated and converted to O ( 3 P) by collision with the generated carbon difluoride ( Non-patent document 5), it cannot be said to be an efficient reaction. It is known that OD) reacts with carbonyl difluoride and partially decomposes to CO and F (Non-Patent Document 5).
- Patent Document 1 Japanese Patent Publication No. 45-26611
- Patent Document 2 JP-A-54-158396
- Patent Document 3 US3088975
- Patent Document 4 US2836622
- Patent Document 5 US3639429
- Patent Document 6 EP0310255
- Non-Patent Document 1 J. Am. Chem. Soc, Vol. 91, (1969) 4432-4436
- Non-patent document 2 Chemical Abstracts Vol. 93, No. l3, (1980) 621 Abstracts No. l32037x
- Non-patent document 3 Chemistry Letters (1992) 1309-1312
- Non-Patent Document 4 Climate Change 2001: The Scientific Basis
- Non-Patent Document 5 Chemical Physics Letters Vol. 69, (1983) 129-132
- Non-Patent Document 6 Zeitschrift for Anorganische und Rheine Chemie Vol.242, (1939)
- An object of the present invention is to provide an economically advantageous method for producing carbonyl difluoride, which is useful as a raw material of a fluorine-containing organic compound or as a cleaning gas in the production of semiconductors.
- the present invention provides the following method:
- a process for producing carbon difluoride comprising reacting trifluoromethane with an oxygen gas or an oxygen-containing gas under heating.
- a method for producing carbonyl difluoride by reacting trifluoromethane with an oxygen gas or an oxygen-containing gas while heating in a reactor comprising the following steps:
- the crude product gas from the reactor is pressurized by a compressor if necessary, the pressurized gas is cooled by a cooler, separated into oxygen-rich gas and liquid of other components, and converted to oxygen. The process of recycling rich gas into the reactor.
- step (ii) Step of separating the liquid separated from oxygen in step (i) by a distillation column, separating and recovering high-purity carbon difluoride, and recycling the concentrated trifluoromethane to a reactor.
- a method for producing carbonyl difluoride by reacting trifluoromethane with an oxygen gas or an oxygen-containing gas under heating in a reactor comprising the following steps:
- the gas that has not been subjected to the liquid filtration in the GO step (i) is further pressurized by a compressor if necessary and then cooled by a cooler to separate it into an oxygen-rich gas and other liquids. Recycling process.
- step (iii) Step of distilling the liquid separated in step (ii) with a distillation column, separating and recovering high-purity carbyl difluoride, and recycling the concentrated trifluoromethane to a reactor.
- HFC23 used as a raw material is obtained as a by-product of HCFC22, which is produced as a raw material for TFE, a refrigerant that is a warming gas, and is partially used as an etching gas. I have. Effective use of HFC23 is economically and globally significant.
- FIG. 1 shows an example of a COF2 production process of the present invention.
- FIG. 2 shows an example of a COF2 production process of the present invention.
- HFC23 trifluoromethane
- oxygen gas or oxygen-containing gas are supplied continuously or intermittently to the heated reaction tube, and the crude product is continuously or intermittently supplied.
- the crude product often contains CO, a by-product, in addition to the main products, luponyl difluoride and HF.
- Compounds other than carbon difluoride in the crude product can be separated by distillation or the like, if necessary.
- Compounds other than the separated carbon difluoride for example, unreacted HFC23 and oxygen (which may further contain carbonyl difluoride) can be recycled to the reaction system again. Therefore, when difluorocarbol is also separated from these, difluorocarbon There is no problem even if it contains a large amount of activated carbon.
- HF and oxygen which have a large difference in boiling point from carbonyl, such as HF or oxygen, the crude product is compressed and / or cooled without separation by distillation, etc.
- compounds having a higher boiling point than oxygen can be selectively separated to separate them.
- the air or oxygen-enriched air can be separated, recovered, recycled, etc. in the same manner as oxygen.
- about 100 ° C force is also about 1500 ° C, preferably about 300 ° C to about 1000 ° C, and more preferably about 350 ° C force is also about 700 ° C. If the reaction temperature is too low, Since the reaction rate becomes extremely slow, the reaction time becomes long, which is not efficient. On the other hand, if the reaction temperature is too high, by-products increase, and the life of the reactor is shortened due to corrosion or the like.
- the reaction time depends on the reaction temperature.
- the force is about 0.1 second and about 10 hours, preferably about 0.5 second to about 1 hour, and more preferably about 1 second and about 30 minutes.
- the longer the reaction time the more the reaction proceeds.
- the reaction time is extremely long, the reaction is heated more than necessary, which is inefficient.
- the reaction time is too short, the reaction does not proceed sufficiently, making it difficult to separate the generated carbonyl difluoride.
- the ratio of HFC23 to oxygen (O 2) is determined by the force that can be selected arbitrarily.
- the amount of element is from about 0.01 to about 200 mol, preferably about 0.1 mol and about 100 mol, more preferably about 0.5 mol and about 50 mol.
- 0.5 mole of oxygen reacts with 1 mole of HFC23, but there is no problem in the reaction with less than oxygen. However, if the amount is too small, the generated carbonyl difluoride will decrease, resulting in poor efficiency. Excessive oxygen promotes the reaction and increases the amount of generated carbon difluoride, which is efficient and unreacted oxygen can be recycled by returning it to the reaction system. If too much, the amount of recycling increases and the equipment becomes large, which is not economical.
- oxygen-containing gas air or air having an increased oxygen concentration by an oxygen-enriched film or the like can be used.
- the oxygen concentration in the oxygen-containing gas is not particularly limited as long as the reaction proceeds. For example, it is about 10% vZv or more and less than 100% vZv, preferably, about 20% vZv or more and less than 100% vZv. There is no problem if the oxygen concentration is lower than air.
- the air removes moisture and CO by a method such as compression and cooling or an adsorbent before the reaction.
- the reaction pressure can be arbitrarily selected from lower than atmospheric pressure or higher than atmospheric pressure. The higher the reaction pressure, the better the efficiency and the better the subsequent separation. More specifically, the gauge pressure is preferably from 0.09 MPaG to 20 MPaG. From the simplicity of the process, the pressure is preferably not less than atmospheric pressure and not more than 20 MPaG. Considering the pressure resistance of equipment such as reactors, not less than atmospheric pressure and not more than lOMPaG Is more preferred.
- the material of the part of the reactor that comes into contact with the reaction gas is important. Any metal or inorganic material can be selected as long as it can withstand oxygen and HF at high temperatures, and iron, copper, or alloys containing a large amount of them can be selected. Reacts with carbon fluoride to generate CO and CO, so that the recovery of carbon difluoride
- stainless steel such as SUS316, N-Cr-Mo alloy such as HASTELLOY C, N-Cr alloy such as INCONEL600,
- Corrosion-resistant materials such as nickel alloys such as Ni-Mo alloys such as HASTELLOY B, M-Cu alloys such as MONEL400, and pure nickel are selected.
- nickel alloys such as Ni-Mo alloys such as HASTELLOY B, M-Cu alloys such as MONEL400, and pure nickel are selected.
- stainless steel since stainless steel partially causes decomposition of the carbon fluoride, it is more preferable to use a nickel alloy such as a Ni-Cr alloy, a Ni-Mo alloy, a Ni-Cr-Mo alloy, a Ni-Cu alloy, or a nickel alloy.
- a material with high corrosion resistance such as is selected.
- the reactor is coated with a stable metal fluoride such as sodium fluoride, potassium fluoride, calcium fluoride, or the like, the material can withstand a high-temperature oxygen atmosphere. Or stainless steel can also be used.
- the present application is characterized in that the reaction between trifluoromethane and oxygen is carried out under heating. Carbon difluoride is partially decomposed into CO and CF by a nickel or platinum catalyst under heating.
- Non-Patent Document 6 Non-Patent Document 6
- carbonyl difluoride generated by the reaction is further decomposed to form CF, despite the fact that nickel-based reactors and nickel beads are filled.
- CF carbonyl difluoride generated by the reaction
- a catalyst can be used in the present invention as is generally used in a gas phase reaction. Or, Pellets and beads can be placed in the reactor simply as a heat medium. These materials do not cause decomposition of carbon difluoride and can be selected from sodium fluoride pellets and nickel beads.
- ruthenium, rhodium, palladium, osmium, iridium, platinum, silver, and aluminum manganese, iron, conorto, nickel, copper, zinc, zirconium, molybdenum, silver, cadmium, tin, Fluorides such as hafnium, rhenium, thallium, lead and bismuth are used. These fluorides may be chlorides, bromides, oxides, etc. which do not need to be fluorides at the time of preparation.For example, CoCl, MnBr, MgCl, CuCl, etc.
- the prepared catalyst can be fluorinated by contacting it with COF or HF before or during the reaction.
- the platinum group catalyst can also be used after carrying a metal halide and then reduced with hydrogen or the like.
- a carrier for supporting the catalyst alkali metal fluorides such as NaF and KF and alkaline earth metal fluorides such as MgF, CaF and BaF can be selected.
- the reaction of the present invention can be carried out, for example, by the production process shown in FIGS.
- the gas whose pressure has been increased is cooled by the cooler I, and the gas having a boiling point higher than that of oxygen is stored in the receiver I.
- the liquid accumulated in the receiver I is sent to the distillation process from the gas phase or liquid phase as gas or liquid.
- receiver I is cooled and HF and carbon difluoride are separated, only the phase rich in carbonyl difluoride can be sent to the next step.
- the energized gas which is not liquefied in the cooler I is a gas containing a large amount of oxygen
- the gas is adjusted to an appropriate pressure by a pressure regulating valve or the like, and then recycled to the reactor.
- the liquid collected in the receiver I is transferred to the distillation process as it is, and separated into high-purity carbon difluoride, a mixture of HFC23 and carbon difluoride, and concentrated HF.
- the mixture of HFC23 and carbon difluoride is returned to the reactor.
- the top power of the high purity carbon difluoride A mixture of HFC23 and carbon difluoride is obtained.
- the crude product gas exiting the reactor is pressurized by a compressor as necessary and cooled by the cooler 1, and HF having a high boiling point is filtered and stored in the receiver 1. If the pressure of the crude gas is sufficiently high, compression is not required.
- the energized gas which is not liquefied in the cooler 2 is a gas containing a large amount of oxygen, and is adjusted to an appropriate pressure via a pressure adjusting valve or the like and then recycled to the reactor.
- the liquid accumulated in the receiver 2 is directly transferred to the distillation step, where it is separated into high-purity carbon difluoride, a mixture of HFC23 and carbon difluoride, and concentrated HF.
- the mixture of HFC23 and carbonyl difluoride is returned to the reactor.
- high-purity carbonyl difluoride is obtained from the top of the column, and a mixture of HFC23 and carbon difluoride is obtained in the middle stage of the column.
- oxygen-containing gas such as air or air whose oxygen concentration is increased by an oxygen-enriched film can be used instead of oxygen.
- moisture and carbon dioxide as impurities are reduced by adsorption, compression, cooling or the like.
- the crude product gas exiting the reactor can be used for heating the charged raw materials via a heat exchanger.
- the compressor may not be provided.
- a 3/4 inch outer diameter SUS316 reaction tube (approximately 30 cm in heating area) was heated to a predetermined temperature with a ring heater while flowing nitrogen. After that, HFC23 and oxygen were flowed at the specified flow rate at that temperature. At this time, the pressure in the reaction tube was about 0.1 OlMPaG in gauge pressure. Dilute the gas coming out of the reaction tube with about 1 L / min of nitrogen, and analyze the product gas by FTIR. , Reaction rate and selectivity were calculated. The results are shown in Table 1.
- a HASTELLOYC reaction tube (approx. 50 cm) made of HASTELLOYC having an inner diameter of about 2 cm was heated to a predetermined temperature by flowing an nitrogen gas with an annular heater. After that, HFC23 and oxygen were flowed at a predetermined flow rate at that temperature. At this time, the pressure in the reaction tube was about 0.1 OlMPaG in gauge pressure. The gas coming out of the reaction tube was diluted with about 1 LZmin of nitrogen, and the reaction gas and selectivity were calculated by separating the generated gas by FTIR. The results are shown in Table 1.
- a 3Z8-inch outer diameter nickel reaction tube (heating portion: about 50 cm) was heated to a predetermined temperature by flowing nitrogen gas through an annular heater. After that, HFC23 and oxygen were flowed at the specified flow rate at that temperature. At this time, the pressure in the reaction tube was about 0.1 OlMPaG in gauge pressure. The gas coming out of the reaction tube was diluted with about 1 LZmin of nitrogen, and the product gas was analyzed by FTIR to calculate the reaction rate and selectivity. The results are shown in Table 1. When the residence time of the heated part was calculated from the capacity of the part, the flow rate of the raw material, and the reaction temperature, it was 18 seconds in Example 17, 12 seconds in Example 18, and 9 seconds in Example 19.
- Example 1 1 700 5.2 10.6 99.9 87
- Example 1 2 520 18.3 35.9 99 99.8 Example 1 3 520 26.9 27.1 98 99.6
- Example 1 4 420 17.1 33.3 91 99.9
- Example 1 5 380 17.1 33.3 81 99.9
- Example 1 6 350 5.2 5.2 64 99.9
- Example 1 7 450 10 20 90 99.8
- Example 1 8 450 15 30 52 99.8
- Example 1 9 450 20 40 5 97.6
- Examples 12 and 13 show that the reaction temperature (520 ° C) is excellent.
- the selectivity was low due to the high reaction temperature, and in Examples 14 to 16, the selectivity was high, but a long reaction time was required due to the low reaction temperature. Is considered to have decreased.
- the reaction temperature is preferably 400 ° C. to 600 ° C. If it is lower than that, the reaction rate is thought to be low, and if it is higher than that, it is considered that by-products are formed and the selectivity is lowered.
- the reaction tube was heated to 520 ° C in the same manner as in Example 10, and then HFC23: 5.2 ml / min, oxygen: 10. lml / min, and nitrogen: 39.8 mlZmin were passed.
- the gas coming out of the reaction tube was directly analyzed by FTIR, and the reaction rate and selectivity were calculated.
- the reaction rate was 80%, and the selectivity for carbonyl difluoride was 99.5%.
- Ni-Cr alloy Ni-Mo alloy
- Ni-Cr-Mo alloy Ni-Cr-Mo alloy
- reaction tube made of a nickel alloy such as a Ni-Cu alloy or a highly corrosion-resistant material such as nickel, decomposition of carbon difluoride into CO can be suppressed.
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims
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JP2006512785A JP5315610B2 (ja) | 2004-04-28 | 2005-04-26 | 二フッ化カルボニルの製造方法 |
US11/587,946 US7592484B2 (en) | 2004-04-28 | 2005-04-26 | Method for producing carbonyl difluoride |
CN2005800216575A CN1976873B (zh) | 2004-04-28 | 2005-04-26 | 羰基氟的制造方法 |
EP05736606.4A EP1770061B1 (en) | 2004-04-28 | 2005-04-26 | Method for producing carbonyl difluoride |
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JP2004-133275 | 2004-04-28 | ||
JP2004133275 | 2004-04-28 |
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US (1) | US7592484B2 (ja) |
EP (1) | EP1770061B1 (ja) |
JP (1) | JP5315610B2 (ja) |
CN (1) | CN1976873B (ja) |
TW (1) | TW200538197A (ja) |
WO (1) | WO2005105668A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010037151A (ja) * | 2008-08-05 | 2010-02-18 | Unimatec Co Ltd | フッ化カルボニルの製造方法 |
JP4851463B2 (ja) * | 2005-09-27 | 2012-01-11 | 独立行政法人産業技術総合研究所 | フッ化カルボニルの製造方法 |
JP2013014500A (ja) * | 2011-06-07 | 2013-01-24 | Daikin Industries Ltd | フッ化カルボニルの製造方法 |
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DE102008052012A1 (de) * | 2008-10-17 | 2010-04-22 | Bayer Materialscience Ag | Katalysator und Verfahren zur Herstellung von Chlor durch Gasphasenoxidation |
CN103303894B (zh) * | 2013-06-17 | 2015-03-11 | 邯郸净化设备研究所 | 一种碳酰氟的纯化方法 |
WO2021045115A1 (ja) * | 2019-09-05 | 2021-03-11 | 国立大学法人神戸大学 | ハロゲン化カルボニルの製造方法 |
Citations (2)
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JPH09255596A (ja) * | 1996-03-22 | 1997-09-30 | Showa Denko Kk | 低級パーフルオロアルカンの製造方法 |
JP2003313016A (ja) * | 2002-04-19 | 2003-11-06 | Daikin Ind Ltd | Cof2の製造方法 |
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US2836622A (en) * | 1955-02-18 | 1958-05-27 | Du Pont | Preparation of carbonyl fluoride |
US3088975A (en) * | 1959-04-09 | 1963-05-07 | Du Pont | Preparation of carbonyl fluoride |
US3639429A (en) * | 1963-07-09 | 1972-02-01 | Du Pont | Process for oxidizing polyfluorinated olefines |
US3404180A (en) * | 1964-12-31 | 1968-10-01 | Du Pont | Manufacture of carbonyl fluoride |
DE2823981A1 (de) | 1978-06-01 | 1979-12-13 | Hoechst Ag | Verfahren zur herstellung von carbonyl-difluoriden |
EP0310255A1 (en) * | 1987-09-14 | 1989-04-05 | STAUFFER MANAGEMENT COMPANY c/o ICI AMERICAS INC. | Production of carbonyl difluoride |
US5648530A (en) * | 1994-12-22 | 1997-07-15 | Du Pont | Manufacture of carbonyl floride |
JP4059680B2 (ja) * | 2002-01-31 | 2008-03-12 | セントラル硝子株式会社 | 二フッ化カルボニルの製造方法 |
-
2005
- 2005-04-26 EP EP05736606.4A patent/EP1770061B1/en not_active Not-in-force
- 2005-04-26 CN CN2005800216575A patent/CN1976873B/zh not_active Expired - Fee Related
- 2005-04-26 US US11/587,946 patent/US7592484B2/en active Active
- 2005-04-26 JP JP2006512785A patent/JP5315610B2/ja not_active Expired - Fee Related
- 2005-04-26 WO PCT/JP2005/007896 patent/WO2005105668A1/ja active Application Filing
- 2005-04-27 TW TW094113486A patent/TW200538197A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09255596A (ja) * | 1996-03-22 | 1997-09-30 | Showa Denko Kk | 低級パーフルオロアルカンの製造方法 |
JP2003313016A (ja) * | 2002-04-19 | 2003-11-06 | Daikin Ind Ltd | Cof2の製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4851463B2 (ja) * | 2005-09-27 | 2012-01-11 | 独立行政法人産業技術総合研究所 | フッ化カルボニルの製造方法 |
JP2010037151A (ja) * | 2008-08-05 | 2010-02-18 | Unimatec Co Ltd | フッ化カルボニルの製造方法 |
JP2013014500A (ja) * | 2011-06-07 | 2013-01-24 | Daikin Industries Ltd | フッ化カルボニルの製造方法 |
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EP1770061A4 (en) | 2009-07-15 |
US20080021243A1 (en) | 2008-01-24 |
US7592484B2 (en) | 2009-09-22 |
CN1976873A (zh) | 2007-06-06 |
EP1770061A1 (en) | 2007-04-04 |
TW200538197A (en) | 2005-12-01 |
JPWO2005105668A1 (ja) | 2008-03-13 |
CN1976873B (zh) | 2010-09-15 |
JP5315610B2 (ja) | 2013-10-16 |
EP1770061B1 (en) | 2017-07-19 |
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