کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
229871 | 465053 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of ionic strength on the extraction of Thorium(IV) from nitrate solution by didodecylphosphoric acid (HDDPA)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The effect of ionic strength on the extraction of Thorium(IV) from nitrate solution by didodecylphosphoric acid (HDDPA) The effect of ionic strength on the extraction of Thorium(IV) from nitrate solution by didodecylphosphoric acid (HDDPA)](/preview/png/229871.png)
چکیده انگلیسی
Extraction of Th(IV) ion from nitrate media at high ionic strength (I = 1.00, 3.00, 5.00 and 7.00 M) using didodecylphosphoric acid was studied. The effect of HDDPA concentration, ionic strength, pcH and temperature on the extraction processes have been studied in nitrate media. From the equation of the extraction process, (Kex) extraction constant can be calculated from the distribution ratio Dc values at different temperatures. Enthalpy, free energy and entropy changes were determined. The composition of the complex formed were established to correspond to [Th(X)4(HR2)Y]org, where X=NO3- and Y = 1 or 2, HR2 = HDDPA molecule and R2 = deprotonated HDDPA molecule.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Saudi Chemical Society - Volume 14, Issue 3, July 2010, Pages 311–315
Journal: Journal of Saudi Chemical Society - Volume 14, Issue 3, July 2010, Pages 311–315
نویسندگان
M.A. Bayyari, M.K. Nazal, F.A. Khalili,