KR940003901A - Method for Purifying 1,1,1,2-Tetrafluoroethane - Google Patents

Method for Purifying 1,1,1,2-Tetrafluoroethane Download PDF

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Publication number
KR940003901A
KR940003901A KR1019930001005A KR930001005A KR940003901A KR 940003901 A KR940003901 A KR 940003901A KR 1019930001005 A KR1019930001005 A KR 1019930001005A KR 930001005 A KR930001005 A KR 930001005A KR 940003901 A KR940003901 A KR 940003901A
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South Korea
Prior art keywords
tetrafluoroethane
hydrogen fluoride
mol
catalyst
unsaturated
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KR1019930001005A
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Korean (ko)
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KR100265580B1 (en
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오노 히로모또
오이 도시오
나까야마 히데또시
무라마끼 가즈오
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무라다 가쓰
쇼와 덴코 카부시키가이샤
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    • 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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

1,1,1,2-테트라플루오로에탄중의 불포화불순물을 효율적으로 제거한다.Unsaturated impurities in 1,1,1,2-tetrafluoroethane are efficiently removed.

조정제공정에서 염화수소를 2몰% 이하로 하여, 불포화불순물의 해당몰이상인 플루오르화수소를 함유하는 1,1,1,2-테트라플루오로에탄을 기체상 상태에서 촉매와 접촉시키는 정제방법.A purifying method in which a 1,1,1,2-tetrafluoroethane containing hydrogen fluoride containing not less than 2 mol% of hydrogen chloride in the coarse preparation step and containing at least a corresponding mole of unsaturated impurities is brought into contact with the catalyst in a gas phase state.

Description

1,1,1,2-테트라플루오로에탄의 정제방법Method for Purifying 1,1,1,2-Tetrafluoroethane

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (4)

트리클로로에탄과 플루오르화수소를 반응시켜 1,1,1,2-테트라플루오로에탄을 제조하는 방법에 있어서, 조정제공정에서 염화수소를2몰%이하로 제거하고, 한가지 이상의 불포화불순물을 함유하며, 또한 플루오르화수소를 불포화불순물에 대해 동일몰이상 함유하는 1,1,1,2-테트라플루오로에탄을 기체상 상태에서 촉매와 접촉시켜. 불포화불순물의 함유량을 감소시키는 것이 특징인 1,1,1,2-테트리플루오로에탄의 정제방법.In the process for producing 1,1,1,2-tetrafluoroethane by reacting trichloroethane and hydrogen fluoride, hydrogen chloride is removed to 2 mol% or less in the crude preparation process, and contains at least one unsaturated impurity. 1,1,1,2-tetrafluoroethane containing at least equal moles of hydrogen fluoride to unsaturated impurities is brought into contact with the catalyst in the gas phase state. A method for purifying 1,1,1,2-tetrifluoroethane characterized by reducing the content of unsaturated impurities. 제1항에 있어서, 1,1,1,2-테트라플루오로에탄의 농도가 70몰% 이상이고, 또한 1,1,1-트리플루오로-2-클로로에탄의 농도가 10몰% 이하인 것이 특징인 정제방법.The method of claim 1, wherein the concentration of 1,1,1,2-tetrafluoroethane is 70 mol% or more, and the concentration of 1,1,1-trifluoro-2-chloroethane is 10 mol% or less. Characteristic purification method. 제1 또는 2항에 있어서, 새로 플로우르화수소를 첨가하지 않고, 불포화불순물에 대해 플루오르화수소를 동일몰이상 함유하는 1,1,1,2-테트라플루오로에탄을 정제하는 것이 특징인 정제방법.The purification method according to claim 1 or 2, wherein 1,1,1,2-tetrafluoroethane containing at least the same mole of hydrogen fluoride with respect to the unsaturated impurity is purified without newly adding hydrogen fluoride. 제1-3항중의 어느 한 항에 있어서, 촉매가 주기율표 1B족, 2A족, 4B족, 5A족, 6A족, 7A족 및 8족중에서 선택된 적어도 한가지의 금속화합물이며, 반응온도가 130-280℃인 것이 특징인 정제방법.The catalyst according to any one of claims 1-3, wherein the catalyst is at least one metal compound selected from group 1B, 2A, 4B, 5A, 6A, 7A, and 8 of the periodic table, and the reaction temperature is 130-280. Purification method characterized in that the ℃. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930001005A 1992-08-31 1993-01-27 Purification of 1,1,1,2-tetrafluoroethane KR100265580B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP23172492A JP3250267B2 (en) 1992-08-31 1992-08-31 Method for purifying 1,1,1,2-tetrafluoroethane
JP231724/1992 1992-08-31

Publications (2)

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KR940003901A true KR940003901A (en) 1994-03-14
KR100265580B1 KR100265580B1 (en) 2000-09-15

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Application Number Title Priority Date Filing Date
KR1019930001005A KR100265580B1 (en) 1992-08-31 1993-01-27 Purification of 1,1,1,2-tetrafluoroethane

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KR (1) KR100265580B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2771737B1 (en) * 1997-12-01 2000-02-04 Solvay PROCESSES FOR THE PRODUCTION AND PURIFICATION OF 1,1-DIFLUOROETHANE AND PRODUCT THUS OBTAINED
CN103418367B (en) * 2013-07-12 2015-10-28 西安近代化学研究所 A kind of catalyst and preparation method preparing Fluorine containing olefine for chlorofluoro-alkane

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JP3250267B2 (en) 2002-01-28
JPH0672912A (en) 1994-03-15
KR100265580B1 (en) 2000-09-15

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