Influence of temperature on phase separation in the ternary systems [Th(NO3)4(TBP)2]-decane-third organic component |
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Authors: | A K Pyartman V A Keskinov V V Lishchuk I A Spiridonova |
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Affiliation: | (1) St. Petersburg State Technological Institute, Technical University, St. Petersburg, Russia |
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Abstract: | The phase diagrams of ternary systems Th(NO3)4(TBP)2]-decane-third organic component (n-butanol, n-octanol, isobutanol, dimethylhexanol, chloroform, carbon tetrachloride, o-dichlorobenzene, tri-n-butyl phosphate, o-xylene, toluene, and linear carboxylic acids) were studied in the temperature range 288.15–333.15 K. These diagrams contain the fields of homogeneous solutions and the field of separation into two liquid phases (I, II). Phase I is enriched in Th(NO3)4(TBP)2 and third component and phase II is enriched in decane. The phase separation is not appreciably influenced by temperature. In phase separation, the third component is predominantly concentrated in phase I, in spite of the fact that the third component and decane have infinite mutual solubility at all the temperatures. The composition of the ternary systems in the critical point is dependent on the kind of the third component. |
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