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Doklady Chemistry, Vol. 393, Nos. 4–6, 2003, pp. 283–286. Translated from Doklady Akademii Nauk, Vol. 393, No. 5, 2003, pp. 629–633. Original Russian Text Copyright © 2003 by Pozhidaev, Panezhda, Grigor’eva, Kirillov, Belousova, Vlasova, Voronkov. CHEMISTRY Yu. N. Pozhidaev, E. V. Panezhda, O. Yu. Grigor’eva, A. I. Kirillov, L. I. Belousova, N. N. Vlasova, and Academician M. G. Voronkov Received March 20, 2003 Previously, we studied sorption of lanthanides (Ln) by The equilibrium of sorption of lanthanides by poly- organosilicon polymers containing sulfonic acid, carbam- mers I–IV is attained over a period of 30 min. The ide, biuretic, acetamide, and phthalamide groups in acidic kinetic curves follow a typical pattern, with a steep sec- tion after about 5–30 min of contact between the solu- and weakly acidic solutions [1, 2]. These sorbents, espe- tion and the sorbent. cially those with sulfonic acid, carbamide, and biuretic groups, did not show high efficiency with respect to lan- The variation of the degree of extraction over the thanides. While further developing this research, we lanthanide series was studied at pH 6. In the case of studied a number of carbofunctional polyorganylsilsesqui- polymer II, the sorption activity varies stepwise on pas- oxanes—poly[N,N'-bis(3-silsesquioxanylpropyl)malono- sage
Doklady Chemistry – Springer Journals
Published: Oct 5, 2004
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