Microcolumn lanthanide separation using bis-(2-ethylhexyl) phosphoric acid functionalized ordered mesoporous carbon materials
Microcolumn lanthanide separation using bis-(2-ethylhexyl) phosphoric acid functionalized ordered mesoporous carbon materials
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DOI：
10.1016/j.chroma.2019.02.057
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发表时间：
2019-06-21
影响因子：
4.1
通讯作者：
Shafer, Jenifer C.
中科院分区：
文献类型：
--
作者：
Bertelsen, Erin R.;Deodhar, Gauri;Shafer, Jenifer C.
相邻的稀土元素是最具挑战性的分离元素之一，目前的分离材料将受益于变革性的改进。有序介孔碳(OMC)材料由于其细小的网孔尺寸和均匀的形貌而成为很好的候选材料。本文采用双(2-乙基己基)磷酸(HDEHP)对OMC材料进行物理吸附，考察了静态和动态条件下对Eu3+的吸附情况。HDEHP-OMC材料表现出比目前最先进的材料更高的分配系数和承载能力。用不加压的小型色谱柱，实现了Eu3+和Nd3+的分离。基于这些实验结果，HDEHP-OMC已显示出作为一种用于色层分离、族内分离和稀土分离的固相吸附剂的潜力。(C)2019爱思唯尔B.V.保留所有权利。
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.