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Sm(Ⅲ) was quantitatively adsorbed by amino methylene phosphonic acid resin(APAR) in the medium of pH=5.0,The statically saturated sorption capacity is 251mg/g.resin.Sm(Ⅲ) adsorbed on APAR can be reductively eluted by 2.0mol/L HCl.The sorption rate constant is k298=1.35×10^-5s^-1.The sorption behavior of APAR for Sm(Ⅲ) obeys the Freundlich isotherm.The enthalpy change ΔH° of sorption is 24.9kJ/mol.The apparent activation energy is Ea=11.7kJ/mol.The sorption mechanism shows that the nitrogen and oxygen atoms of the functional group of APAR coordinated with Sm(Ⅲ) to form coordination bond. 相似文献
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Crystal structure of copper (II) complex with a new aminocarboxylate ligand, 3-hydroxyl-1, 5-diazacycloheptane-N,N-diacetate, C9H14CuN2O5.H2O, Mr=311.78 is reported. It crystallizes in orthorhombic Pna21 with a=13.340(4), b=8.127(1), c=10.583(4) , V=1147.2(7)3 , Z=4, Dc=1.805g/cm3, μ=19.287cm-1 (MoKα), F(000)=644. The final R and Rw are 0.049 and 0.065 for 888 observed reflections with I≥3σ(I). The result of X-ray structure determination shows that the Cu(Ⅱ) forms a planar complex with two oxygen atoms and two nitrogen atoms of the ligand. 相似文献