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首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Microcolumn lanthanide separation using bis-(2-ethylhexyl) phosphoric acid functionalized ordered mesoporous carbon materials
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Microcolumn lanthanide separation using bis-(2-ethylhexyl) phosphoric acid functionalized ordered mesoporous carbon materials

机译:使用双(2-乙基己基)磷酸官能化有序介孔碳材料分离微柱镧

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摘要

Adjacent lanthanides are among the most challenging elements to separate, to the extent that current separations materials would benefit from transformative improvement. Ordered mesoporous carbon (OMC) materials are excellent candidates, owing to their small mesh size and uniform morphology. Herein, OMC materials were physisorbed with bis-(2-ethylhexyl) phosphoric acid (HDEHP) and sorption of Eu3+ was investigated under static and dynamic conditions. The HDEHP-OMC materials displayed higher distribution coefficients and loading capacities than current state-of-the-art materials. Using a small, unpressurized column, a separation between Eu3+ and Nd3+ was achieved. Based on these experimental results, HDEHP-OMC have shown potential as a solid phase sorbent for chromatographic, intragroup, lanthanide separations. (C) 2019 Elsevier B.V. All rights reserved.
机译:相邻的镧是分离的最具挑战性的元素之一,在目前的分离材料将受益于转化性改善的程度之外。 由于其小网状尺寸和均匀的形态,有序的介孔碳(OMC)材料是优异的候选者。 在此,OMC材料与双 - (2-乙基己基)磷酸(HDEHP)物质吸收,并在静态和动态条件下研究了EU3 +的吸附。 HDEHP-OMC材料显示出比当前最先进的材料更高的分配系数和装载能力。 使用小的未加压柱,实现了EU3 +和ND3 +之间的分离。 基于这些实验结果,HDEHP-OMC显示出作为色谱,内部镧系元植物的固相吸附剂的电位。 (c)2019 Elsevier B.v.保留所有权利。

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