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Vapor‐Liquid Phase Equilibria for Carbon Dioxide+Isopentanol Binary System at Elevated Pressure
Author(s) -
Wang Lin,
Cao Fengpu,
Liu Shanshan,
Yang Hao
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201180285
Subject(s) - chemistry , dilution , thermodynamics , carbon dioxide , van der waals force , equation of state , vapor pressure , binary system , phase (matter) , volume (thermodynamics) , partial pressure , binary number , molar , partial molar property , mixing (physics) , analytical chemistry (journal) , chromatography , organic chemistry , molecule , aqueous solution , oxygen , medicine , physics , arithmetic , mathematics , dentistry , quantum mechanics
High‐pressure vapor‐liquid phase equilibrium data for carbon dioxide+isopentanol were measured at temperatures of 313.2, 323.1, 333.5 and 343.4 K in the pressure range of 4.64 to 12.71 MPa in a variable‐volume high‐pressure visual cell. The experimental data were well correlated with Peng‐Robinson equation of state (PR‐EOS) together with van der Waals‐2 two‐parameter mixing rule, and the binary interaction parameters were obtained. Henry coefficients and partial molar volumes of CO 2 at infinite dilution were estimated based on Krichevsky‐Kasarnovsky equation, and Henry coefficients increase with increasing temperature, however, partial molar volumes of CO 2 at infinite dilution are negative and the magnitudes decrease with temperature.