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Viscosities of binary mixtures in the dense gaseous state: The methane‐carbon dioxide system
Author(s) -
Dewitt Kenneth J.,
Thodos George
Publication year - 1966
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.5450440305
Subject(s) - methane , viscosity , viscometer , carbon dioxide , mole fraction , thermodynamics , binary system , binary number , chemistry , capillary action , mass fraction , analytical chemistry (journal) , organic chemistry , physics , arithmetic , mathematics
Viscosity measurements for the gaseous state of three binary mixtures of the methane‐carbon dioxide system were carried out at 50, 100, 150 and 200 °C. for pressures ranging from 34 to 680 atm. The compositions of these mixtures were 0.243, 0.464 and 0.755 mole fraction methane. These measurements were made using an unsteady state capillary viscometer which had been used previously in the procurement of viscosities of pure substances. The resulting measurements for these mixtures produced relationships between μ‐μ* and ρ which were consistent in behavior with the corresponding relationships of the pure constituents of this binary system. When these variables were normalized with ϵ the viscosity parameter, and ρ c , the critical density, the quantities (μ‐μ*)ϵ and ρ R for these mixtures and the pure components yielded a single relationship which can represent the viscosity behavior for this entire binary system.