چاپ صفحه |  صفحه نخست سامانه |  چکیده مقاله |  نویسندگان |  دانلود مقاله | دانشگاه علوم پزشکی تبریز |
| By means of the saturation shake-flask technique, the saturation solubility data of 3,3′-diaminodiphenyl sulfone in 14 monosolvents (n-propanol, N,N-dimethylformamide, methanol, ethanol, ethylene glycol, cyclohexane, acetonitrile, isopropanol, water, n-butanol, ethyl acetate, 1,4-dioxane, isobutanol, and 1-heptanol) was achieved at temperatures from 283.15 to 328.15 K and ambient pressure (p = 101.2 kPa). No phenomenon of crystalline form transformation or solvation occurred after dissolution of 3,3′-diaminodiphenyl sulfone in different solvents. The solubility values (mole fraction) of 3,3′- diaminodiphenyl sulfone in above 14 solvents increased as the temperature elevated and obeyed the decreasing tendency in different monosolvents as follows: N,N-dimethylformamide > ethyl acetate > acetonitrile > ethylene glycol > 1,4-dioxane > methanol > ethanol > isobutanol > n-propanol > n-butanol > isopropanol > 1-heptanol > water > cyclohexane. The mutual miscibility of solvent and 3,3′-diaminodiphenyl sulfone was explained through the threedimensional Hansen solubility parameter. Examination was carried out for molecular interactions between the solute−solvent and solvent−solvent species by means of the linear solvation energy relationships. The solubility data obtained through experiments was correlated by the use of four models/equations, namely, the NRTL model, Apelblat equation, λh equation, and Wilson model. Correlation resulted in the maximum root-mean-square and relative average deviation values of, respectively, 397.1 × 10−5 and 7.57 × 10−2. The Apelblat equation gave lower relative average deviations than the other models/equations for a certain neat solvent. Also, the mixing thermodynamic properties, infinite-dilution activity coefficient, and reduced excess enthalpy were obtained in terms of the Wilson model |
| نویسنده | نفر چندم مقاله |
|---|---|
| ابوالقاسم جویبان | سوم |
| نام فایل | تاریخ درج فایل | اندازه فایل | دانلود |
|---|---|---|---|
| 11111.pdf | 1400/07/11 | 3249242 | دانلود |
