کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7044020 | 1456925 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Extraction of actinide ions using three CMPO-functionalized pillar[5]arenes in a room temperature ionic liquid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Extraction of actinide ions using three CMPO-functionalized pillar[5]arenes in a room temperature ionic liquid Extraction of actinide ions using three CMPO-functionalized pillar[5]arenes in a room temperature ionic liquid](/preview/png/7044020.png)
چکیده انگلیسی
Extraction of actinide ions from nitric acid feeds was investigated using solutions of three CMPO (carbamoyl methyl phosphine oxide) functionalized pillar[5]arenes with varying spacer lengths in a room temperature ionic liquid, [C8mim][NTf2]. The extraction of Am3+ was found to decrease with increasing nitric acid concentration suggesting a mechanism analogous to a cation-exchange mechanism. The nature of the extracted species was determined by the conventional slope analysis method to be ML type which was subsequently confirmed by luminescence spectroscopy. Studies carried out to determine the thermodynamic parameters suggested highly exothermic reactions with negative entropy values. The reusability and recycling studies involved stripping and radiolytic stability of the solvent systems which suggested reasonably encouraging results. While a DTPA solution in guanidine carbonate was found to back extract the extracted metal ion from the ionic liquid phase, the radiolytic stability of the CMPO-pillararenes were reasonably good.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 195, 29 April 2018, Pages 224-231
Journal: Separation and Purification Technology - Volume 195, 29 April 2018, Pages 224-231
نویسندگان
Arijit Sengupta, Prasanta Kumar Mohapatra, Yuyu Fang, Xiangyang Yuan, Wen Feng, Lihua Yuan,