超临界N2处理作为一个通往多孔Mg的清洁脱的途径
Nicholas P Stadie1, Elsa Callini, Bo Richter
1Empa, Swiss Federal Laboratories for Materials Science & Technology, Dübendorf, Switzerland.
Journal of the American Chemical Society
|May 30, 2014
概括
超临界干净玻利化物以释放清洁的气. 这种方法澄清了二博的起源,这对于可逆化学储存材料至关重要.
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.
- 储能 储能 储能 储能 储能 储能
背景情况:
- 化学储存依赖于在加热时释放H2的材料.
- 微孔复合化物,如Mg{\displaystyle \\mathbb {Mg} }BH4) 2是有希望的,但由于杂质的吸附表面积很大,因此很难净化.
- 杂质阻碍了清洁脱,了解像diborane这样的分解产品对于可逆性至关重要.
研究的目的:
- 开发一个新的净化策略,为γ相Mg{BH4)2.2.
- 为了证明在温和的条件下从纯化Mg{\displaystyle BH}4) 2中释放出清洁的气.
- 为了阐明 diborane 在 borohydride 分解中的形成机制.
主要方法:
- 使用超临界干燥来净化γ-Mg(BH4) 2.2.
- 分析脱产品以确认纯度和识别分解副产品.
- 研究了在分解过程中形成的迪博的起源.
主要成果:
- 通过超临界干燥成功净化了γ-Mg(BH4) 2.
- 在温和的条件下从净化材料中释放出清洁的气.
- 澄清了 diborane 的起源, diborane 是化分解中的一个关键杂质.
结论:
- 超临界干是一种有效的方法来净化反应性多孔材料,如Mg{\displaystyle BH}2.4.
- 这种净化对于清洁的产生和理解化学储存化合物的可逆性至关重要.
- 该技术对合成其他高纯度高级功能材料具有前景.
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