An article A four parameter cubic equation of state with temperature dependent covolume parameter WOS:000472199000019 published article about VAPOR-LIQUID-EQUILIBRIA; PLUS PROPANE SYSTEM; VAN-DER-WAALS; BINARY-MIXTURES; PHASE-EQUILIBRIUM; PURE COMPOUNDS; M-XYLENE; VOLUME TRANSLATION; P-XYLENE; 333.15 K in [Ghoderao, Pradnya N. P.; Narayan, Mohan] Inst Chem Technol, Dept Phys, Mumbai 400019, Maharashtra, India; [Dalvi, Vishwanath H.] Inst Chem Technol, Dept Chem Engn, Mumbai 400019, Maharashtra, India in 2019.0, Cited 73.0. Recommanded Product: Diphenyl oxide. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8
A four-parameter, Ghoderao-Dalvi-Narayan 2 cubic equation of state (GDN2 CEOS), is presented which incorporates the following: 1. The experimental value of the critical compressibility factor has been used as a fixed input parameter for calculations; 2. All the parameters (a, b, c, d) of CEOS are temperature dependent functions in the subcritical region and arc temperature independent functions in the supercritical region and; 3. A new a function is introduced with two compound specific parameters which are estimated by matching saturated vapor pressure at two fixed temperature points T-r = 0.5, 0.7. Our formalism enables us to cast three of the four parameters of the CEOS as a function of the remaining parameter. The proposed CEOS is used to predict properties of 334 pure compounds, including saturated vapor pressure and liquid density, compressed liquid density, heat capacities at the constant pressure and volume, enthalpy of vaporization, sound velocity. To calculate thermodynamic properties of a pure compound, the present CEOS require the critical temperature, the critical pressure, the Pitzer’s acentric factor, the critical compressibility factor, and two parameters of the alpha function. The saturated liquid density predictions for pure fluids are very accurate when compared with GDN1 (Ghoderao-Dalvi-Narayan 1), MPR (Modified Peng-Robinson), and PT (Patel-Teja) equations of state. Unlike MPR EOS, the proposed temperature dependent covolume parameter b in the present work satisfies all the constraints mentioned in the literature to avoid thermodynamic inconsistencies at the extreme temperature and pressure. Using van der Waals one-fluid mixing rule, the present CEOS is further used to predict bubble pressure and the vapor mole fraction of binary mixtures. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
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