Abstract
N-(n-Alkyl)-N′-diphenylphosphorylureas Ph2P(O)NHC(O)NHC n H2n+1 (n = 6–10) were synthesized by the reaction of diphenylphosphoryl isocyanate with primary n-alkylamines C n H2n+1NH2. The products (especially N-diphenylphosphoryl-N′-n-octylurea) are efficient extractants capable of extracting actinides and lanthanides from nitric acid solutions with high distribution coefficients.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 374–379, February, 2008.
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Goryunov, E.I., Safiulina, A.M., Morgalyuk, V.P. et al. N-(n-Alkyl)-N′-diphenylphosphorylureas as a new type of extractants for preconcentration of actinides and lanthanides. Russ Chem Bull 57, 383–388 (2008). https://doi.org/10.1007/s11172-008-0058-z
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DOI: https://doi.org/10.1007/s11172-008-0058-z