从水溶液中分离稀土元素和的化剂辅助降水式分离
Yangyang Gao1,2, Gerra L Licup3, Nicholas P Bigham1
1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York, 14853, United States.
Angewandte Chemie (International ed. in English)
|July 20, 2024
概括
一种新型的G-macropa化剂使 (Nd3+) 和 (Dy3+) 稀土元素 (REEs) 的有效水分离成为可能. 这种方法实现了高分离因子,并证明了化剂.
科学领域:
- * 无机化学 无机化学
- * 材料科学 材料科学
- * 化学工程 化学工程
背景情况:
- * 稀土元素 (REEs) 对于清洁能源技术至关重要,但由于相似的化学性质,难以分离.
- *现有的REEs的分离方法,如 (Nd3+) 和 (Dy3+),通常是复杂和低效的.
- * 开发可再生能源的选择性和可回收的分离技术对于可持续的资源管理至关重要.
研究的目的:
- *合成和评估一种新的宏观类型G-宏观,用于选择性地分离Nd3+和Dy3+.
- * 为了研究基底的分子机制的化剂的结合亲和力差异对Nd3+和Dy3+.
- * 用G-macropa来展示Nd3+和Dy3+的基于水性降水的实际分离方法.
主要方法:
- *合成了G-macropa类似物.
- *分子动力学模拟以研究化剂-REE相互作用.
- *使用G-巨型和二碳酸盐添加的水性沉实验.
- *使用高分离因子对分离效率的描述.
- *对G-macropa化剂的回收和循环评估.
主要成果:
- *G-macropa对较大的REEs表现出选择性的结合亲和力,类似于macropa,但稳定常数较低.
- *分子动力学揭示,内部球的水分子影响着化剂结合的亲和力.
- *通过将二碳酸盐添加到含有Nd3+,Dy3+和G-macropa的溶液中,实现了Dy2(CO3) 3的选择性沉.
- *高分离因子 (841和741) 获得了各种Nd3+:Dy3+比率,包括来自磁体废物的分离因子.
- *G-macropa通过与HCl结晶成功地被回收和循环利用.
结论:
- * G-macropa 是一种高效的化剂,用于 Nd3+ 和 Dy3+ 的选择性水分离.
- *开发的沉方法为从复杂的混合物和废物流中有效地分离 REE提供了一个有希望的途径.
- *G-macropa的可回收性突出显示了其在可持续和成本效益高的REE回收过程中的潜力.
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