在超分子有机框架中的特殊热稳定性:多孔性和气体储存
Wenbin Yang1, Alex Greenaway, Xiang Lin
1School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
Journal of the American Chemical Society
|September 28, 2010
概括
这项研究合成了具有高度吸附乙和二氧化碳的能力的新型多孔有机框架 (SOF-1). 这些材料展示了选择性气体吸附,为气体分离应用提供了潜力.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
背景情况:
- 超分子有机框架 (SOF) 是具有可调节的多孔结构的晶体材料.
- 开发具有选择性气体吸附性能的新型SOF对于气体储存和分离的应用至关重要.
研究的目的:
- 为了合成和描述基于二二的新型高分子有机框架.
- 为了研究合成框架的气体吸附特性和选择性.
主要方法:
- 贝塔-阿米诺-贝塔- ((pyrid-4-yl) 烯酸与芳香二甲的反应.
- 单晶X射线衍射用于结构分析.
- 气体吸附等热体 (N2,CO2,C2H2,CH4) 用于确定孔隙性和吸收能力.
主要成果:
- 合成了两种新的基于二二的有机框架,L(1) 和L(2).
- SOF-1 (来源于L(1)) 呈现永久性多孔性和由键和pi-pi相互作用稳定的3D超分子网络.
- SOF-1a对C2H2 (124cm3g-1在195K) 和CO2 (69cm3g-1在298K) 具有很高的吸附能力,选择性顺序为C2H2 > CO2 > CH4 > N2.
结论:
- 合成的SOF-1显示出选择性吸附乙和二氧化碳的显著潜力.
- 二皮基连接体的结构多功能性允许形成不同的网络架构,影响孔隙性和吸附性行为.
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