在室温下将CO2转化为有孔金属有机框架
Kentaro Kadota, You-Lee Hong1,2, Yusuke Nishiyama1,3
1NMR Science and Development Division, RIKEN SPring-8 Center and RIKEN-JEOL Collaboration Center, Yokohama, Kanagawa 230-0045, Japan.
Journal of the American Chemical Society
|October 4, 2021
概括
研究人员在环境条件下将二氧化碳 (CO2) 转化为多孔金属有机框架 (MOF). 这种新的方法从二氧化碳中产生稳定的MOF,为碳捕获和材料合成提供可持续的途径.
科学领域:
- 材料科学
- 化学学
- 可持续性
背景情况:
- 将二氧化碳 (CO2) 转化为功能材料对于碳中和社会至关重要.
- 金属有机框架 (MOF) 是广泛研究的多孔材料,但由于CO2的惰性,它们的合成尚未被探索.
- 现有的MOF连接器合成方法通常需要恶劣的条件或高能量投入.
研究的目的:
- 在环境条件下从二氧化碳中直接合成MOF的方法.
- 探索二氧化碳作为MOF建设的可再生资源的潜力
- 在MOF合成中克服CO2化学惰性的挑战.
主要方法:
- 在环境温度和压力下采用单合成方法.
- 在 piperazines 和 CO2 中形成双碳酸连接物.
- 立方 [Zn4O(piperazine dicarbamate) 3 MOF 的结晶.
主要成果:
- 从二氧化碳中成功合成高度多孔的晶体MOF.
- 由此产生的MOF具有很大的表面积 (∼2366 m2 g−1) 和很高的二氧化碳含量 (>30 wt %).
- 虽然单独的二碳酸连接器在热力学上不稳定,但在MOF格子中稳定,确保永久的孔隙性.
结论:
- 通过使用二氧化碳作为原料,证明了一种新的高效的MOF合成方法.
- 开发的MOF显示了对二氧化碳捕获和储存应用的巨大潜力.
- 这项工作开辟了利用二氧化碳作为先进材料的可持续组成部分的新途径.
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