C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 19/12 (2006.01) C07C 17/20 (2006.01) C07C 17/21 (2006.01) C07C 19/08 (2006.01)
Patent
CA 2213579
The invention relates to a process for producing HFC-125 and/or HCFC-124 from PCE. The process involves a first reaction step of fluorinating PCE in the presence of catalyst in a liquid phase to form HCFC-123 and/or HCFC-122 and a second reaction step of fluorinating HCFC-123 and/or HCFC-122 in the presence of catalyst in a vapor phase to form HFC-125 and/or HCFC-124. This process gives an improved yield of objective products, the catalyst remains effective for a long period, and the reaction temperature can be controlled without difficulty.
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.
Homoto Yukio
Shibanuma Takashi
Tsuda Takehide
Yamada Yasufu
Yoshimura Toshikazu
Daikin Industries Ltd.
Kirby Eades Gale Baker
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