The Thermodynamic Characteristics of Multicomponent Reaction Mixtures in the Sub and Supercritical States Full article
| Journal |
Russian Journal of Physical Chemistry B
ISSN: 1990-7931 , E-ISSN: 1990-7923 |
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| Output data | Year: 2009, Volume: 3, Number: 7, Pages: 1044-1061 Pages count : 18 DOI: 10.1134/S1990793109070033 | ||||||
| Tags | α-pinene, Chemical and phase equilibrium, Heteroazeotropes, Mathematical modeling, Monoterpenes, Multicomponent mixture, Nonideality, Phase diagrams critical point, Supercritical fluids, Thermophysical properties | ||||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Foundation for Basic Research | 01-03-32866 |
| 2 | Russian Foundation for Basic Research | 06-08-00024 |
| 3 | International Science and Technology Center | 2383 |
Abstract:
The paper presents mathematical models and calculation methods for solving particular research problems related to the thermodynamic characteristics of multicomponent and multiphase mixtures. The special features of chemical and phase equilibria in such mixtures are considered in the ideal gas approximation and taking nonideality into account. The conditions of equilibrium phase stability are studied for multiphase systems. The results of calculations of characteristic phase diagrams and binodal and spinodal are given for model systems with a fixed chemical composition, and a new interpretation of the mathematical model for localizing the critical point of a multicomponent mixture with a given composition is presented. A new interpretation of the well-known classic homotopy method is suggested for solving complex nonlinear systems of equations. Some anomalies of phase portraits and critical curves that are necessary to take into account in selecting (planning) experimental conditions and calculating chemical processes and reaction parameters are considered separately. The possibility of calculating thermodynamic and thermophysical properties (entropy, enthalpy, heat capacity, heat effects of reactions, and adiabatic heating) is demonstrated for the example of particular multicomponent nonideal mixtures. The conclusion is drawn that cubic equations of state can be used for predicting the deviations of these properties from the ideal gas state and their anomalies in the vicinity of the critical points of mixtures.
Cite:
Ermakova A.
, Chibiryaev A.M.
, Kozhevnikov I.V.
, Anikeev V.I.
The Thermodynamic Characteristics of Multicomponent Reaction Mixtures in the Sub and Supercritical States
Russian Journal of Physical Chemistry B. 2009. V.3. N7. P.1044-1061. DOI: 10.1134/S1990793109070033 WOS Scopus РИНЦ OpenAlex
The Thermodynamic Characteristics of Multicomponent Reaction Mixtures in the Sub and Supercritical States
Russian Journal of Physical Chemistry B. 2009. V.3. N7. P.1044-1061. DOI: 10.1134/S1990793109070033 WOS Scopus РИНЦ OpenAlex
Original:
Ермакова А.
, Чибиряев А.М.
, Кожевников И.В.
, Аникеев В.И.
Термодинамика сложных реакционных смесей в докритическом и сверхкритическом состоянии
Сверхкритические флюиды: Теория и практика. 2009. Т.4. №1. С.18-48. РИНЦ
Термодинамика сложных реакционных смесей в докритическом и сверхкритическом состоянии
Сверхкритические флюиды: Теория и практика. 2009. Т.4. №1. С.18-48. РИНЦ
Dates:
| Submitted: | Sep 15, 2008 |
| Published print: | Dec 1, 2009 |
| Published online: | Jan 14, 2010 |
Identifiers:
| Web of science: | WOS:000276487600003 |
| Scopus: | 2-s2.0-75149190101 |
| Elibrary: | 15301884 |
| OpenAlex: | W2068175020 |