The volumetric behavior of carbon dioxide (1) + decane (2) mixtures has been investigated under the high pressures 20, 30, and 40 MPa in the temperature range [308.15 K to 368.15 K]. Densities have been measured for pure decane and for x 1 = 0.15, 0.30, 0.51, 0.66, 0.78, and 0.84. Density variations show a peculiar behavior: a crossover phenomenon with the composition at a given pressure and temperature is observed. The measured fluid densities have been compared with values predicted by equations of state with various mixing rules. This comparative study has revealed models well adapted to these density estimations.
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Bessières et al. (2001) studied this question.
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