PROCESS FOR PRODUCING PENTAFLUOROETHANE AND TETRAFLUOROCHLOROETHANE

A process for producing HFC-125 and/or HCFC-124 from PCE, characterized by comprising the first reaction step of fluorinating PCE in the presence of a catalyst in a liquid phase to form HCFC-123 and/or HCFC-122 and the second reaction step of fluorinating the HCFC-123 and/or HCFC-122 in the presence...

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Bibliographic Details
Main Authors YOSHIMURA, TOSHIKAZU, HOMOTO, YUKIO, TSUDA, TAKEHIDE, YAMADA, YASUFU, SHIBANUMA, TAKASHI
Format Patent
LanguageEnglish
French
Japanese
Published 29.08.1996
Edition6
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for producing HFC-125 and/or HCFC-124 from PCE, characterized by comprising the first reaction step of fluorinating PCE in the presence of a catalyst in a liquid phase to form HCFC-123 and/or HCFC-122 and the second reaction step of fluorinating the HCFC-123 and/or HCFC-122 in the presence of a catalyst in a gas phase to form HFC-125 and/or HCFC-124. This process is improved in the yield of objective products, the lifetime of catalyst, and the controllability of reaction temperature. Procédé de production de HFC-125 et/ou de HCFC-124 à partir de PCE, qui consiste d'abord à fluorurer du PCE en présence d'un catalyseur dans une phase liquide de sorte que du HCFC-123 et/ou du HCFC-122 soient formés, et à fluorurer le HCFC-123 et/ou le HCFC-122 en présence d'un catalyseur dans une phase gazeuse de sorte que du HFC-125 et/ou du HCFC-124 soient formés. Ce procédé permet d'améliorer la production de produits cibles, d'augmenter la durée de vie du catalyseur et de maîtriser la température de réaction.
Bibliography:Application Number: WO1996JP00401