Hành vi chiết xuất của Am(III) và Eu(III) trong dung dịch ion lỏng dựa trên 1,3-diketonat

Journal of Radioanalytical and Nuclear Chemistry - Tập 310 - Trang 91-97 - 2016
Alok Rout1, Venkatesan K. A1, Antony M. P1
1Fuel Chemistry Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, India

Tóm tắt

Quá trình chiết xuất dung môi của americium(III) và europium(III) từ môi trường acid nitric được tiến hành bằng dung dịch của chất lỏng ion chức năng hóa (FIL), 1-butyl-3-methylimidazolium hexafluoro 1,3-diketonate ([C4mim][hfac]) có mặt trong dung môi 1-butyl-3-methylimidazolium bis(trifluoromethane-sulfonyl)imide, ([C4mim][NTf2]). Tỉ lệ phân bố của Am(III) và Eu(III) được đo lường như một hàm của pH, nồng độ FIL, bản chất của dung môi và nhiệt độ. Các giá trị D tăng lên theo sự gia tăng của pH. Phương pháp phân tích độ dốc cho thấy sự tham gia của ba FIL trong quá trình tạo phức. Việc loại bỏ hoàn toàn ion kim loại khỏi pha chiết xuất bằng acid nitric. Một hệ số phân tách là 25 đã được đạt được cho Am(III) so với Eu(III) bằng cách sử dụng dung dịch axit polycarboxylic (DTPA).

Từ khóa

#chiết xuất dung môi #americium(III) #europium(III) #dung dịch lỏng ion #acid nitric #tỉ lệ phân bố

Tài liệu tham khảo

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