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Summary

The extraction of rare earth elements (La, Pr, Nd, Sm, Eu) by mixture of n-tributylphosphate and 2-ethylhexyl 2-ethylhexyl phosphonic acid from nitric acid solutions has been developed. The influence of various factors such as the nitric acid concentrations, the n-tributylphosphate / 2-ethylhexyl 2-ethylhexyl phosphonic acid ratio,... on the Sk has been reported. The synergistic effects of rare earths has been investigated at the nitric acid concentration 0.2M;  the formulation of complexes of rare earths with n-tributylphosphate and 2-ethylhexyl 2-ethylhexyl phosphonic acid has also been presented by using the IR,  UV and raman  analysis methods.

Tác giả: Lưu Minh Đại, Đặng Vũ Minh, Võ Quang Mai

Viện KH&CN Việt Nam

 

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Download this file (Hieu-ung-tang-cuong-chiet.PDF)Hieu-ung-tang-cuong-chiet.PDFHiệu ứng tăng cường chiết của các nguyên tố đất hiếm nhẹ (La, Pr, Nd, Sm, Eu) bằng hỗn hợp tributylphotphat và axit 2-etylhexyl 2-etylhexyl photphonic từ dung dịch axit nitric.218 Kb22/11/2010 16:14
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Hiệu ứng tăng cường chiết của các nguyên tố đất hiếm nhẹ ̣(La, Pr, Nd, Sm, Eu) bằng hỗn hỡp tributylphotphat và axit 2-etylhexyl 2-etylhexyl photphonic từ dung dịch axit nitric