Solubility and solution thermodynamics of 2, 6-bis (4-hydroybenzylidene) cyclohexanone in pure and binary solvents at various temperatures |
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Authors: | Ravibhai Bhola Haresh Modi Chirag Patel Hasit Vaghani Keyur Bhatt Rizwan Ghumara |
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Affiliation: | 1. Department of Chemistry, Ganpat University, Gujarat, India;2. Department of Chemistry, C.U. Shah University, Wadhwan City, Gujarat, India;3. Department of Chemistry, Krantiguru Shyamji Krishna Verma Kachchh University, Bhuj, India;4. Department of Chemistry, Shri M. M. Patel Institute of Sciences and Research, Kadi Sarva Vishvavidyalaya, India |
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Abstract: | Solubility of 2, 6-bis (4-hydroxybenzylidene) cyclohexanone (BHBC) in pure solvents such as 1,4-dioxane, methanol, 1-butanol, 1-propanol, ethyl acetate, acetone, tetrahydrofuran (THF), glacial acetic acid, dimethyl sulphoxide (DMSO) and binary solvents dimethyl formamide (DMF) and (1-Propanol + Tetrahydrofuran) were investigated by gravimetric method at different temperature range. The experiment solubility increases with increase in temperature in both pure and binary solvents. The Maximum solubility is found in DMF at 328.15 K and for binary solvent mixture i.e. 1-propanol and THF (0.9 mol fraction) it was maximum at 318.15 K. Further modified Apelblate and Buchowski-Ksiazczak models were used for the theoretical calculation of solubility of BHBC in pure as well binary solvents. A satisfactory correlation of these models with experimental data was observed. The solution thermodynamics parameters like enthalpies, Gibb's free energy of dissolution and entropy of solutions were calculated using Van't Hoff and Gibb's equation, which reveals the solvation mechanism is non-spontaneous and entropy driven. |
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Keywords: | Solubility Modified apelblat model Buchowaski-ksiazczak model 2 6-Bis (4-hydroxybenzaylidene) cyclohexanone Thermodynamics parameters |
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