کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5411837 | 1506583 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measurement and correlation of the solubility of gallic acid in methanol plus water systems from (293.15 to 318.15) K
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Measurement and correlation of the solubility of gallic acid in methanol plus water systems from (293.15 to 318.15) K Measurement and correlation of the solubility of gallic acid in methanol plus water systems from (293.15 to 318.15) K](/preview/png/5411837.png)
چکیده انگلیسی
This work presents measurements of the solubility of gallic acid in (water + methanol) binary solvents from (293.15 to 318.15) K at atmospheric pressure using a thermostated reactor and UV/vis spectrophotometer analysis. The effects of binary solvents composition and temperature on the solubility were discussed. The solubility data were correlated with the modified Apelblat equation and semi-empirical Buchowski-Ksiazczak λh equation. The root-mean-square deviations (RMSDs) for modified Apelblat model were lower than those of the Buchowski-Ksiazczak model. The calculated solubilities show good agreement with the experimental data in the temperature range studied. Using the experimentally measured solubilities, the thermodynamic properties of dissolution of the gallic acid such as Gibbs energy (ÎsolGo), molar enthalpy of dissolution (ÎsolHo), and molar entropy of dissolution (ÎsolSo) were calculated. Therefore, the experimental data and model parameters would be useful for optimizing the process of purification of gallic in industry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 187, November 2013, Pages 226-229
Journal: Journal of Molecular Liquids - Volume 187, November 2013, Pages 226-229
نویسندگان
Adel Noubigh, Abdelkarim Aydi, Arbi Mgaidi, Manef Abderrabba,