Isothermal vapour-liquid equilibrium of (difluoromethane + trifluoroiodomethane) at temperatures ranging from 253.150 K to 293.150 K
| Autor: | Yuhuai Wang, Xueqiang Dong, Wei Liu, Yanxing Zhao, Xian Wang, Maoqiong Gong, Zhenming Li |
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| Rok vydání: | 2021 |
| Předmět: |
Relative standard deviation
Zeotropic mixture Thermodynamics 02 engineering and technology 010402 general chemistry Mole fraction 01 natural sciences Atomic and Molecular Physics and Optics Isothermal process 0104 chemical sciences chemistry.chemical_compound 020401 chemical engineering chemistry Phase (matter) General Materials Science Trifluoroiodomethane Binary system 0204 chemical engineering Physical and Theoretical Chemistry Difluoromethane |
| Zdroj: | The Journal of Chemical Thermodynamics. 152:106281 |
| ISSN: | 0021-9614 |
| Popis: | In this paper, the isothermal vapour-liquid equilibrium (VLE) data for pure difluoromethane (R32) and trifluoroiodomethane (R13I1) and their binary mixtures have been measured based on a vapour – phase single recirculation method. The data were collected for five temperatures from 253.150 K to 293.150 K. The experimental VLE data were regressed by PR-MHV2-NRTL model and PR-vdW model. The deviation curves of pressures and vapour compositions for the binary system between experimental and calculated values were given. The results indicated that the maximum mean absolute relative deviation of pressure (MARDp) for PR-MHV2-NRTL is 0.54%, which shows a better fit than PR-vdW with a maximum MARDp of 2.73%. The maximum mean absolute deviation of vapour phase mole fraction (MADy) for PR-MHV2-NRTL and PR-vdW are 0.013 and 0.010, respectively. The azeotropic behaviours were found at T = (253.150, 263.150, 273.150) K, while the zeotropic behaviours were found at 283.150 K and 293.150 K. |
| Databáze: | OpenAIRE |
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