کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7022180 | 1456033 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced CO2 carrier activity of potassium cation with fluorosilicate anions for facilitated transport membranes
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, we report the enhanced carrier activity of potassium cation (K+) not only with fluoride but also fluorosilicate anions, prepared by the simple heat-treatment of polymer electrolyte solution in glass vial. The formation of water-soluble fluorosilicate anions such as SiF5(H2O)- was investigated by 19F NMR spectroscopy and thermogravimetric analysis (TGA). The XPS data revealed the increased binding energy of K2p3/2 up to 294.6Â eV with broad spectrum for F1s binding energy. The interaction between K+ and the amide groups of PVP was confirmed by FT-IR spectroscopy. As a result, membranes containing K+ demonstrated a selectivity ratio CO2/N2 and CO2/CH4 of 25.62 and 25.87, respectively, with a CO2 permeance of 52.01Â GPU. This enhanced separation performance was mostly attributable to the counter-anion effect on K+ carrier activity, resulting in the increased CO2 transport compared to the previous system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 466, 15 September 2014, Pages 357-360
Journal: Journal of Membrane Science - Volume 466, 15 September 2014, Pages 357-360
نویسندگان
Il Seok Chae, Miso Kim, Yong Soo Kang, Sang Wook Kang,