用于选择性提取扫的粉末等级多孔单体
Aaron Brewer1, Chloé Reicher1, Olivia Manatschal1
1Department of Functional Materials and Catalysis, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria.
ACS sustainable chemistry & engineering
|October 27, 2023
概括
未经修改的多孔有效地从各种来源中提取关键材料 - - 扫 (Sc). 这种固体相提取方法显示出高的选择性和容量,为Sc回收挑战提供了有希望的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 金工业是金工业的一个方面.
背景情况:
- 扫 (Sc) 是先进合金中至关重要的关键材料.
- 目前和潜在的供应限制需要新的提取方法.
- 固体阶段提取 (SPE) 为Sc回收提供了一个有前途的途径,特别是在低质量的资源中.
研究的目的:
- 为了评估用于提取的非功能化的层次性多孔粉.
- 在批量和半连续流系统中评估材料的性能.
- 为了研究吸附能力,选择性,和提取的动力机制.
主要方法:
- 使用了来自DPS Inc.的粉状等级多孔单体.
- 在批量和半连续流系统中进行了吸附实验.
- 分析了不同pH值的吸附能力和对稀土元素 (REEs) 的选择性.
主要成果:
- 吸附剂显示出出色的质量转移特性,用于快速回收Sc.
- 在pH 6下,High Sc吸附能力为~142.7 mg/g,在pH 3下降至~12.0 mg/g.
- 观察到Sc对其他REEs的高度选择性吸附.
- 流量系统中的sc回收效率受到吸附反应动力学而不是扩散的限制.
结论:
- 未经修改的层次性多孔粉显示出选择性提取的显著潜力.
- 该材料适用于从各种原料中回收,解决供应问题.
- 这些发现支持SPE的可行性,使用这种二氧化用于工业规模的Sc回收.
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