通过合成酸 (MCM-22) 捕获稀土元素:对Yb的机制理解 (III) 捕获
Puranjan Chatterjee1,2, Yong Han1,3, Takeshi Kobayashi1
1U.S. Department of Energy, Ames National Laboratory, Ames, Iowa 50011, United States.
ACS applied materials & interfaces
|November 7, 2023
概括
这项研究揭示了像Ytterbium这样的重稀土元素 (HREEs) 如何吸附到MCM-22热带石上. 吸附通过静电相互作用和布伦斯特德酸位发生,这对于理解从酸性溶液中捕获HREE至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 地质化学 地质化学
背景情况:
- 重稀土元素 (HREEs) 对现代技术至关重要.
- 需要有效的吸附方法来从酸性溶液中恢复HREE.
- 基酸材料,如化物,显示出对HREE吸附的希望.
研究的目的:
- 为了阐明伊特尔 (一种HREE) 在MCM-22热上吸附的机制.
- 研究表面特性和溶液化学在HREE吸附中的作用.
- 建立MCM-22焦化物作为研究基酸盐HREE吸附的平台.
主要方法:
- 使用MCM-22热和Ytterbium进行固体相吸附实验.
- 调整溶液的pH值以研究表面电荷效应.
- 谱分析 (例如,FTIR,XPS) 以确定吸附点.
- 理论计算以支持实验发现.
主要成果:
- Yb(III) 吸附主要是由Yb(III) 离子与表面部位之间的静电相互作用驱动的.
- 溶液的pH显著影响Yb吸附,表明表面电荷的重要性.
- 框架含量在MCM-22热中与布伦斯特德酸位 (BAS) 在Yb吸附中的参与有关.
结论:
- 在MCM-22热带石上HREEs的吸附机制涉及静电吸引和与布伦斯特德酸位的相互作用.
- MCM-22热石有效地从酸性溶液中吸附Yb (III).
- 了解这些表面相互作用是开发有效的HREE分离和回收技术的关键.
关键词:
在MCMM-22中,MCM-22是MCM-22中的一个.离子吸附粘土是一种离子吸附粘土.稀土元素是稀土元素中的一种.固体阶段吸附固体阶段吸附在此之前,它被认为是 ytterbium .泽奥利特人是什么意思更多相关视频
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