Choi, Ye-na Song, Hyun-tae Kim, Hyun Dong Yu-jeong, Yang JEONGMIN, SEO Lee, Kwan Young Moon, Dong Ju 2024-01-12T02:46:28Z 2024-01-12T02:46:28Z 2023-10-24 2023-05-15 https://pubs.kist.re.kr/handle/201004/76451 Chlorodifluoromethane (CHClF2, R-22) is used as a refrigerant for automobiles, refrigerators, and air conditioners. The Montreal Protocol (1991) defined HCFC (Hydrochloro-fluoro-carbon) as a cause of ozone layer destruction and regulated the use of HCFC globally. The research of R-22 pyrolysis under the non-catalytic and catalytic conditions has been conducted to produce TFE. The R-22 pyrolysis reaction was carried out under the fixed bed reactor system at 550-800 °C, a residence time 0.1-1.14 sec, atmospheric pressure, and a steam/R-22 molar ratio of 4-10. It was found that TFE production by non-catalytic R-22 pyrolysis was showed higher performance than catalytic R-22 pyrolysis reaction under the superheated steam conditions. R-22 conversion was increased with increasing reaction temperature under the non-catalytic pyrolysis condition, and increased with increasing the ratio of steam to R-22. TFE selectivity was obtained more than 90% at the reaction temperature range between 600-700 oC, and dramatically decreased less than 600 oC and more than 800 oC, respectively. English The Korean Institute of Chemical Engineers (KIChE) Studies on the production of Tetrafluoroethylene by thermal decomposition of R-22 under the various reaction conditions Conference 1 The 19th Korea-Japan Symposium on Catalysis (KJSC) The 19th Korea-Japan Symposium on Catalysis (KJSC) KO The Korea Science and Technology Center, Seoul, Korea 2023-05-15 The 19th Korea-Japan Symposium on Catalysis (KJSC)