Abstract
A new simplified form of an equation of state suitable for the correlation of pVT-data is presented. The new equation of state is capable to model pVT-data in the low- and high-pressure regions as well as in the critical region. Taking a fugacity approach as a basis, we have calculated the solubility of several low-volatile solid organic compounds, in particular of the globular molecule adamantane in CO 2 and the natural dyestuff β-carotene in three compressed gases, i.e. CO 2, CClF 3, and N 2O. For all systems except β-carotene+N 2O solubility data measured up to 100 MPa and more (180 MPa for β-carotene+CO 2 and+CClF 3) are available. Experimental results for the systems β-carotene+CO 2 and+CClF 3 are also reported. Here, adamantane serves as an example for a relatively high-soluble substance, while β-carotene represents low-soluble solutes. Solubility maxima, which have been found experimentally as a function of pressure or density at constant temperature, are considered in the correlations.
Published Version
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