Extraction equilibrium and thermodynamics of cesium with a new derivative of calix[4]biscrown
Extraction equilibrium and thermodynamics of cesium with a new derivative of calix[4]biscrown
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DOI：
10.1007/s10967-014-3287-7
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发表时间：
2014-06
影响因子：
1.6
通讯作者：
Ying Dai;A. Zhang
中科院分区：
文献类型：
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作者：
Ying Dai;A. Zhang
A new supermolecular recognition agent namedtetra-tert-butyl-calix[4]-bis[(4-methly-1,2-phenylene-crown-6] (TertButylCalixC) was synthesized. Batchwise experiments of extraction of Na(I), K(I), Rb(I), Cs(I), Sr(II), Ba(II), Ru(III) and Fe(III) from aqueous solution withTertButylCalixC/o-nitroanisole were carried out. Effects of HNO3concentration, contact time and temperature on the extraction behavior were examined. The equilibrium established within 30 min implied a fast extraction kinetics. The optimal operation temperature was 298 K. Stoichiometry ofTertButylCalixC and Cs(I) by electrospray ionization mass spectrometry characterization revealed 1:1 molar ratio. It was observed that the extraction system ofTertButylCalixC/o-nitroanisole was effective for selective removal of Cs(I), showing remarkable separation performance.
