Solubilities of solid 1,10-decanediol and a solid mixture of 1,10-decanediol and benzoic acid in supercritical carbon dioxide

Abstract

Table IV. Comparison of Experimental Solubilities of Ammonium Bromide and Ammonium Iodide in Liquid Ammonia with Literature Values solubility, wt % solute temp, °C lit.0 obsd6 dev, % ammonium bromide 9.2 69.3 (5) 69.29 -0.01 20.0 69.7 (5) 70.22 . +0.74 32.6 70.4 (5) 71.59 +1.70 53.6 71.2 (5) 72.34 +1.60 25 70.4 (3) 70.75 +0.50 ammonium iodide 2.5 77.2 (5) 77.17 -0.04 22.6 78.6 (5) 78.47 -0.17 44.2 80.0 (5) 79.34 -0.83 57.0 80.9 (5) 81.50 +0.74 25 78.7 (4) 78.64 -0.09 0 (5) Kendall's data; (3) and (4) Hunt's data. 6 Smoothed value from observed data.1 % with the data of Hunt (4) and Kendall (5). But the values of ammonium bromide in liquid ammonia at 32.6 and 53.6 °C were 1.7 and 1.6% larger than those of Kendall (5).No literature data have been available for mixtures of ammonium halides in liquid ammonia.The solubility curves against temperature are shown in Figure 2. The solubility of ammonium iodide is shown by a smoothed increasing curve. However, it was found that the solubilitytemperature curve for ammonium bromide and its mixture of ammonium iodide had a bend point on the solubility curve. With increasing weight ratio of ammonium iodide, the solubility increased and the bend point on the solubility curve gradually moved toward lower temperature. AcknowledgmentWe express our gratitude to Mr. A. Shimomura for his experimental work and Mr. A. Kurata for his useful suggestion.

Influence of matrix composition on the ternary solubility of cholesteryl esters in supercritical carbon dioxide

“…Note that anthracene and phenanthrene are miscible over the whole composition range. However, the solubility of each solute was observed to be independent of the weight ratios of pure solids physically mixed in their study, similar to those observed for other eutectic systems [23,24]. This independence may be true for simple eutectic solid mixtures according to the phase rule and the solubility is then independent of the bed composition.…”

“…It is also noted that the fluid phase solubilities become dependent on the feed composition of the solute bed if the co-existed solid solutes undergo melting point depression and produce at least a liquid phase [40,41]. However, for most solid mixture systems, the variation of the extraction feed bed composition has made no difference in the ternary solubility of each solute [23,24,19], where the co-existing solutes retain as pure solid phase under high pressure such as simple eutectic systems.…”

“…where 23 and 32 are the two parameters characteristic of the Wilson equation and obtained by correlating the ternary solubility data.…”

Ternary solubility of mixed cholesteryl esters in supercritical carbon dioxide

“…Consequently, change of the bed composition would make no difference in their ternary solute solubility. The observation of the ternary solubility independent of feed composition has been reported in several investigations [6,26,32]. On the other hand, fluid phase solubilities become dependent on the solute composition of the solid phase if the solutes undergo melting point depression and produce at least a liquid phase.…”

Correlation and Prediction of the Solubility of Solid Solutes in Chemically Diverse Supercritical Fluids Based on the Expanded Liquid Theory

“…However, in this section an attempt is made to predict the solubilities of mixed compounds in supercritical carbon dioxide. Experimental ata provided by: Kosal and Holder [32] for mixed an d thracene and phenanthrene, Pennisi and Chimowitz [26] for mixed 1,10-decanediol and benzoic acid, Iwai el al. [33] for mixed 2,6-and 2,7-dimethylnaphtalenes are used.…”