کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
217227 | 1426313 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Activity coefficients of CaCl2 in (maltose + water) and (lactose + water) mixtures at 298.15 K
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Activity coefficients of CaCl2 in disaccharide {(maltose, lactose) + water} mixtures at 298.15 K were determined by cell potentials. The molalities of CaCl2 ranged from about 0.01 mol · kg−1 to 0.20 mol · kg−1, the mass fractions of maltose from 0.05 to 0.25, and those of lactose from 0.025 to 0.125. The cell potentials were analyzed by using the Debye–Hückel extended equation and the Pitzer equation. The activity coefficients obtained from the two theoretical models are in good agreement with each other. Gibbs free energy interaction parameters (gES) and salting constants (kS) were also obtained. These were discussed in terms of the stereo-chemistry of saccharide molecules and the structural interaction model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 40, Issue 5, May 2008, Pages 889–896
Journal: The Journal of Chemical Thermodynamics - Volume 40, Issue 5, May 2008, Pages 889–896
نویسندگان
Kelei Zhuo, Hongxun Liu, Honghao Zhang, Yaohui Liu, Jianji Wang,