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Excess enthalpy data for the ternary system methane—ethylene—carbon dioxide by flow calorimetry
Author(s) -
Gagné Carol,
Kaliaguine Serge C.,
Ramalho Rubens S.
Publication year - 1986
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450640318
Subject(s) - ternary operation , methane , carbon dioxide , enthalpy , thermodynamics , calorimeter (particle physics) , isothermal process , ternary numeral system , chemistry , ethylene , binary system , calorimetry , binary number , organic chemistry , physics , arithmetic , mathematics , detector , computer science , optics , programming language , catalysis
Excess enthalpy data for the ternary system methane – ethylene – carbon dioxide was obtained utilizing an isothermal flow calorimeter. The measurements were made at three temperatures: 293.15, 305.15 and 313.15 K and pressures of 1.114, 1.520 and 3.445 MPa (11, 15 and 34 atm). The determination of excess enthalpies for the binary systems methane—ethylene, ethylene—carbon dioxide and methane—carbon dioxide has been reported in three preceeding articles, respectively: Gagné et al., 1985; Ba et al., 1979 and Barry et al., 1982a. The binary interaction coefficients k ij obtained for these systems have been utilized as initial values for the optimization procedure leading to the k ij for the ternary system. For the case of the ternary system studied in this investigation, two types of binary interaction coefficients k ij have been determined from experimental data: k ij independent of temperature and pressure and k ij adjusted as function of temperature and pressure. Experimental data were compared with the predictions from Benedict—Webb—Rubin and Redlich—Kwong equations of state. In both cases, the coefficients k ij dependent on temperature and pressure led to better prediction of excess enthalpies.