单壁聚甲酸金属有机通道,具有高密度的开放捐赠点和气体吸收
Qipu Lin1, Tao Wu, Shou-Tian Zheng
1Department of Chemistry, University of California, Riverside, California 92521, USA.
Journal of the American Chemical Society
|January 17, 2012
概括
一个新的多孔3D框架,由二聚和H(3) BTT合成,证明了特殊的气体储存能力. 这种材料利用了大量未使用的N-捐赠站点来实现高和二氧化碳的吸收.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 纳米技术 纳米技术
背景情况:
- 金属有机框架 (MOF) 对于气体储存应用至关重要.
- 设计具有高表面积和可访问的活跃地点的MOF是提高气体吸收的关键.
- 特定的有机链接剂和金属节点在MOF结构和功能中的作用需要进一步研究.
研究的目的:
- 为了合成和描述一个新的多孔3D框架,使用二聚和1,3,5-tris(2H-四-5-yl) (H(3) BTT).
- 研究合成材料的气体储存能力,特别是 (H2) 和二氧化碳 (CO2).
- 了解框架的孔隙性,N-捐赠站点和天然气吸收能力之间的关系.
主要方法:
- 二聚和H(3) BTT的自我组装,由尿素衍生物促进.
- 使用测定孔隙性和结构的技术,对得到的3D框架进行表征.
- 气体吸附测量以量化在特定条件下的H2和CO2吸收.
主要成果:
- 成功合成了一个高度多孔的3D框架.
- 该框架包括大量未使用的N-捐赠者网站 (67%).
- 该材料具有很高的气体储存能力:1.89重量%H2在77K和1大气压下;98cm(3) /gCO2在273K和1大气压下.
- 尽管没有开放的金属地点,但观察到高气体吸收.
结论:
- 合成的多孔框架显示出出色的气体储存潜力.
- 高度的可访问的N-捐赠站点和低框架密度有助于优越的气体吸收.
- 这项研究突出了一个有前途的新材料,用于先进的气体储存应用.
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