Triggering phase disengagement of 1-alkyl-3-methylimidazolium chloride ionic liquids by using inorganic and organic salts |
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| Institution: | 1. Institute for High Temperature Electrochemistry, Russian Academy of Sciences, Ural Division, Yekaterinburg 620990, Russia;2. Ural Federal University, Department of Chemistry, Yekaterinburg 620002, Russia;1. College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou, Fujian 350108, China;2. College of Physics and Energy, Fujian Normal University, Fuzhou, Fujian 350108, China;1. Applied Chemistry Department, Sardar Vallabhbhai National Institute of Technology, Surat 395007, Gujarat, India;2. Chemical Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat 395007, Gujarat, India;1. State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China;2. College of Chemistry and Chemical Engineering, Hunan University, Changsha, China;1. Resident, Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China;2. Resident, Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China;3. Attending Physician, Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China;4. Assistant Professor, Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China;6. Resident, Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China;5. Professor and Department Head, Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China |
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| Abstract: | This study deals with the influence of different inorganic and organic salts made up with sodium, potassium and ammonium cations to induce phase segregation in aqueous solutions of C8C1imCl and C10C1imCl at T = 298.15 K. The experimental solubility values are described by means of four empirical equations and the suitability of the models was analysed in the light of the standard deviation. The capability of the above mentioned salts to further phase de-mixing is discussed on the basis of their different molar Gibbs free energy of hydration (ΔhydG), molar entropy of hydration (ΔhydS) and pH. The efficiency of the separation was evaluated by determining the tie-lines, and these experimental values were fitted to three known models such as Bancroft, Othmer–Tobias and modified Setschenow equations. |
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| Keywords: | Aqueous biphasic systems Ionic liquids Imidazolium Segregation agent Correlation models |
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