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隔离相邻的轻稀土元素使用凝修改与dwglycolamic酸

Takeshi Ogata¹, Hirokazu Narita¹

¹Resource Circulation Technology Research Team, Global Zero Emission Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 16-1, Onogawa, Tsukuba 305-8569, Japan.

Materials (Basel, Switzerland)

|June 19, 2024

概括

分离类似的稀土元素 (REEs) 是很困难的. 新的吸附剂,特别是EDASiDGA,在分离/和回收单独的REEs如方面表现出高效率,提供了实际的解决方案.

科学领域:

分析化学分析化学
材料科学材料科学材料科学
无机化学无机化学

背景情况:

稀土元素 (REEs) 具有相似的化学特性,使得它们的分离在各种工业应用中成为一个重大挑战.
开发高效和具有成本效益的REE分离方法对于可持续的资源利用至关重要.

研究的目的:

研究新型基基基吸附剂的有效性,这些吸附剂经过基酸修饰,用于分离相邻的稀土元素.
评估特定吸附剂EDASiDGA的分离性能和回收能力,用于关键的废弃废气.

主要方法:

合成和表征四种类型的凝吸附剂,其功能与甲基酸衍生物.
稀土元素 (La到Sm和更重的REEs) 对准备的吸附剂的吸附研究.
对分离因子的评估,特别是对于新/ (Nd/Pr) 的分离因子.
使用EDASiDGA包装的柱子进行列色谱实验,用于选择性化Pr,Nd和Sm.

主要成果:

通常情况下,REEs的吸附比率随着原子数从La到Sm的增加而增加,较重的REEs的吸附比率趋于平稳.
在EDASiDGA吸附剂中, Nd/Pr.的高分离因子为2.8 .
使用EDASiDGA包装的柱子实现了Pr,Nd和Sm的单独回收,选择性化使用不同度的HCl (0.32M为Pr/Nd,1.0M为Sm).

结论:

EDASiDGA在分离相邻的稀土元素方面表现出色,特别是Nd/Pr.
开发的方法允许选择性回收Pr,Nd和Sm,而不需要合剂.
充满EDASiDGA的专为稀土元素的分离和净化提供了一个有希望和实用的解决方案.

关键词:

吸附剂是一种吸附剂.吸附吸附是一种吸附.稀土元素稀土元素稀土元素回收回收是回收的方法.分离式隔离器的使用方法

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