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用于高选择性的天然气分离的三维结孔状金属有机框架

Wenyan Dan¹, Guangfeng Wei¹, Xiangdong Fang¹

¹College of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Yangpu, Shanghai 200092, China.

Molecules (Basel, Switzerland)

|January 23, 2024

概括

一个新的3D金属有机框架,TJU-Dan-5,显示了选择性乙吸附的希望. 它的结结构有助于有效地将乙与甲分离,这对于天然气净化至关重要.

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) 是具有可调节结构的先进多孔材料.
键在MOF中的分子识别和吸附过程中起着至关重要的作用.
有效的碳化合物分离对于天然气行业至关重要.

研究的目的:

为了合成一种新的3D结金属有机框架.
研究合成材料的气体吸附特性,重点是和乙.
评估MOF在选择性C2H6吸附和天然气净化方面的潜力.

主要方法:

金属有机框架 [Cu(apc) 2) n (TJU-Dan-5) 的溶热合成.
在不同的温度和压力下测量气体吸附度 (H2,C2H6,CH4).
布鲁努埃尔-埃梅特-泰勒 (BET) 表面积分析.
分子建模以了解宿主与客人的相互作用.

主要成果:

成功合成了TJU-Dan-5,一种3D结合的MOF.
激活的TJU-Dan-5在77K时表现出1.52%的重量%的吸收.
在气体混合物中观察到C2H6对CH4的高预测选择性 (约为101) 在273K和100kPa时.
分子建模揭示了控制C2H6吸附的C-H···π和范德瓦尔斯相互作用.

结论:

该研究提出了一种用于构建3D键MOF的新策略.
TJU-Dan-5显示出选择性乙吸附的显著潜力.
这种材料可以通过高效的C2H6/CH4分离来净化天然气.

关键词:

键是一种键.金属有机框架的框架.天然气天然气天然气.分离式隔离器的使用方法

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