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Phase behavior of solids

The enhanced solubility of solids in compressed gases at elevated temperatures and pressures was first noted more than one hundred years ago. Hannay and Hogarth (1) observed that the solubility of salts in compressed ethanol was considerably greater than expected based on the vapor pressure of the salts. Since this early investigation, numerous authors have discussed the phase behavior of solids in dense fluids at elevated temperatures and pressures. [Pg.138]

The phase behavior of solids in supercritical fluids has practical significance as well as academic interest. Since the mid-1970 s, it has been recognized that supercritical fluids can be useful as solvents for commercial-scale extractions. While a variety of applications are documented in the literature (2,6), supercritical-fluid (SCF) extraction has been particularly useful in upgrading petroleum fractions (7), extracting volatile components from coal (8), and deashing oil shale (9) and coal liquids (10). The... [Pg.138]

As indicated in Figures 5 and 6, there is a nearly linear relationship between the log[AOT] solubility and the fluid density over several order of magnitude of AOT concentration. This type of behavior would be expected for the solubility of a non-aggregate forming, solid substance in a supercritical fluid (XL). The solubility and phase behavior of solid-supercritical fluid systems has been described by Schneider (2H) and others, and such behavior can be predicted from a simple Van der Waal s equation of state. Clearly, this approach is not appropriate for predicting surfactant solubilities in fluids, because it does not account for the formation of aggregates or their solubilization in a supercritical fluid phase. [Pg.101]

The complex phase behavior of solid-state AN has been described in Sec. 1.1.1. Understanding the nature of these phase changes is of paramount importance in the rational design of energetic materials based on AN. [Pg.465]

Be able to compute the phase behavior of solid mixtures (Sec. 12.4)... [Pg.658]

Phase Behavior of Solid Mixtures 679 Problems for Section 12.4 687... [Pg.963]

See other pages where Phase behavior of solids is mentioned: [Pg.295]    [Pg.163]    [Pg.7]    [Pg.118]    [Pg.29]    [Pg.69]    [Pg.170]    [Pg.171]    [Pg.489]    [Pg.679]    [Pg.679]    [Pg.681]    [Pg.683]    [Pg.684]    [Pg.685]    [Pg.687]    [Pg.7]   


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Phase behavior

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