Structural and interparticle interactions in the model systems of natural brines
Baranauskaite, Valeriia (2019)
School of Engineering Science, Laskennallinen tekniikka
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This study is dedicated to dynamics and structures of the water-based multicomponent solutions studied at wide temperature and concentration ranges. Since the scientific interest towards aqueous solutions has been shared by many scientists: physics, chemists, biologists and even mathematicians, there are many speculations about micro properties of water-based systems. As for today, there are no wide spread models and theories about structure of water-based solutions. In this study the use of phenomenological model of concentrated electrolyte solutions structure is presented. The systematic approach was used to study three ternary water-based systems. Eutectic concentrations of ternary solutions were determined with cryoscopic measurements. NMR measurement were conducted for solutions, and possible ionic surrounding was described. The standard formation enthalpies of double salts were calculated with help of calorimetric studies. The structural properties of double salts obtained from X-ray experiments were discussed. These results are necessary for further Molecular Dynamical computations.