ATE421497T1 - Verfahren zur herstellung von difluormethan - Google Patents

Verfahren zur herstellung von difluormethan

Info

Publication number
ATE421497T1
ATE421497T1 AT02745779T AT02745779T ATE421497T1 AT E421497 T1 ATE421497 T1 AT E421497T1 AT 02745779 T AT02745779 T AT 02745779T AT 02745779 T AT02745779 T AT 02745779T AT E421497 T1 ATE421497 T1 AT E421497T1
Authority
AT
Austria
Prior art keywords
fluorination
catalyst
producing difluoromethane
ahf
distillation
Prior art date
Application number
AT02745779T
Other languages
English (en)
Inventor
Rajasekaran Ramanathan
Rajdeep Anand
Anurag Jain
Jampani Rao
Original Assignee
Srf Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Srf Ltd filed Critical Srf Ltd
Priority claimed from PCT/IN2002/000148 external-priority patent/WO2004007410A1/en
Application granted granted Critical
Publication of ATE421497T1 publication Critical patent/ATE421497T1/de

Links

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C07C17/395—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification of at least one compound

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)
AT02745779T 2002-07-10 2002-07-10 Verfahren zur herstellung von difluormethan ATE421497T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IN2002/000148 WO2004007410A1 (en) 2002-07-10 2002-07-10 A process for the production of difluoromethane

Publications (1)

Publication Number Publication Date
ATE421497T1 true ATE421497T1 (de) 2009-02-15

Family

ID=34259912

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02745779T ATE421497T1 (de) 2002-07-10 2002-07-10 Verfahren zur herstellung von difluormethan

Country Status (6)

Country Link
EP (1) EP1542949B1 (de)
JP (1) JP2005532408A (de)
CN (1) CN100372821C (de)
AT (1) ATE421497T1 (de)
AU (1) AU2002317470A1 (de)
DE (1) DE60231010D1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527414B (zh) * 2011-12-28 2013-01-02 临海市利民化工有限公司 一种制备二氟甲烷或二氟一氯甲烷的氟化催化剂及制备方法和应用

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744148A (en) * 1952-02-04 1956-05-01 Dow Chemical Co Process for fluorination of haloalkanes using a hydrogen fluoride activated catalyst containing alumina, a metal fluoride and basic aluminum fluoride
US2745886A (en) * 1955-01-31 1956-05-15 Dow Chemical Co Process for fluorinating aliphatic halohydrocarbons with a chromium fluoride catalyst and process for preparing the catalyst
EP0508631A1 (de) * 1991-04-08 1992-10-14 Imperial Chemical Industries Plc Herstellung von Fluorkohlenwasserstoffen
JP3605831B2 (ja) * 1992-10-05 2004-12-22 ダイキン工業株式会社 ハロゲン化炭化水素のフッ素化方法
JPH06263657A (ja) * 1993-03-11 1994-09-20 Showa Denko Kk ジフルオロメタンの製造法
GB9404703D0 (en) * 1993-03-24 1994-04-27 Ici Plc Production of difluoromethane
DE69407870T2 (de) * 1993-06-18 1998-08-27 Showa Denko Kk Fluorierungskatalysator und Fluorierungsverfahren
JPH0717882A (ja) * 1993-07-05 1995-01-20 Daikin Ind Ltd ジフルオロメタンの製造方法
JPH0733691A (ja) * 1993-07-21 1995-02-03 Showa Denko Kk ジフルオロメタンの製造方法
FR2736048B1 (fr) * 1995-06-27 1997-08-01 Atochem Elf Sa Synthese du difluoromethane
FR2736050B1 (fr) * 1995-06-29 1997-08-01 Atochem Elf Sa Procede de fabrication du difluoromethane
US5763708A (en) * 1995-09-20 1998-06-09 Allied Signal Inc. Process for the production of difluoromethane
JP2003528723A (ja) * 2000-03-31 2003-09-30 カウンシル・オブ・サイエンティフィック・アンド・インダストリアル・リサーチ １，１，１，２−テトラフルオロエタンの調製のためのプロセス

Also Published As

Publication number Publication date
CN100372821C (zh) 2008-03-05
JP2005532408A (ja) 2005-10-27
CN1668558A (zh) 2005-09-14
EP1542949A1 (de) 2005-06-22
DE60231010D1 (de) 2009-03-12
EP1542949A4 (de) 2006-05-17
EP1542949B1 (de) 2009-01-21
AU2002317470A1 (en) 2004-02-02

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Legal Events

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