Isothermal vapor–liquid equilibria of binary systems of carbon dioxide and 1-butyne, compared to other binary CO2 + C4Hn systems in terms of global parameters

文献信息

发布日期 2002-02-15
DOI 10.1039/B109059C
影响因子 3.676
作者

M. Bardas, N. Dahmen, T. Kraska, K.-D. Wagner, L. Yelash


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摘要

Isothermal vapor–liquid equilibria have been measured for binary systems carbon dioxide and 1-butyne at 303, 313, and 333 K. In advance, the accuracy of the experimental method was checked with the binary system carbon dioxide + n-butane in comparison to literature data. The measurements were performed using an analytical method with a recirculation view cell apparatus. The experimental data were correlated with the Peng–Robinson equation of state. The interaction parameters kij of the binary systems of carbon dioxide and n-butane, isobutane, 1-butene, and 1,3-butadiene were calculated and compared. The kij-values turned out to decrease with increasing degree of unsaturation of the hydrocarbons. The binary mixtures of carbon dioxide with C4-hydrocarbons were located in a global phase diagram calculated for the Peng–Robinson equation of state for the first time here. The analysis of the global phase diagram shows that the unsaturation of the C4 molecules has a quantitative effect on the phase behaviour in contrast, for example, to the chain length effect.

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来源期刊

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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