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A Highly Connected Trinuclear Cluster Based Metal-Organic Framework for Efficient Separation of C2H2/C2H4 and C2H2/CO2.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-09-10 , DOI: 10.1021/acs.inorgchem.0c02101 Qian Li 1 , Nana Wu 1 , Jia Li 1 , Dapeng Wu 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-09-10 , DOI: 10.1021/acs.inorgchem.0c02101 Qian Li 1 , Nana Wu 1 , Jia Li 1 , Dapeng Wu 1
Affiliation
One of the barriers for efficient gas separation is the trade-off between the selectivity and adsorption capacity. To address this issue, we synthesized an anionic trinuclear CoII based 3D MOF (NbU-8), which is characterized by an ultramicroporous building unit (UBU) and Lewis basic binding sites on the pore surfaces. Remarkably, the combination of the two strategies can synergistically enhance the C2H2 adsorption capacity (182.9 cm3/g at 298 K) and simultaneously achieve a high separation performance toward C2H2/C2H4 and C2H2/CO2 mixtures. Besides theoretical calculations, the separation efficiencies of C2H2/C2H4 and C2H2/CO2 are also demonstrated using breakthrough experiments. Density functional theory calculations have further confirmed the −OH groups and ultramicroporous building units play an important synergistic effect in efficiently capturing acetylene molecules.
中文翻译:
高效连接C2H2 / C2H4和C2H2 / CO2的高度连接的基于三核簇的金属有机框架。
有效气体分离的障碍之一是选择性和吸附能力之间的权衡。为了解决这个问题,我们合成了基于阴离子三核Co II的3D MOF(NbU-8),其特征是在孔表面具有超微孔结构单元(UBU)和Lewis基本结合位点。值得注意的是,两种策略的组合可以协同增强C 2 H 2的吸附容量(在298 K时为182.9 cm 3 / g),同时实现对C 2 H 2 / C 2 H 4和C 2 H 2的高分离性能。/ CO 2混合物。除了理论计算,还使用突破性实验证明了C 2 H 2 / C 2 H 4和C 2 H 2 / CO 2的分离效率。密度泛函理论计算进一步证实了-OH基团和超微孔结构单元在有效捕获乙炔分子方面起着重要的协同作用。
更新日期:2020-09-21
中文翻译:
高效连接C2H2 / C2H4和C2H2 / CO2的高度连接的基于三核簇的金属有机框架。
有效气体分离的障碍之一是选择性和吸附能力之间的权衡。为了解决这个问题,我们合成了基于阴离子三核Co II的3D MOF(NbU-8),其特征是在孔表面具有超微孔结构单元(UBU)和Lewis基本结合位点。值得注意的是,两种策略的组合可以协同增强C 2 H 2的吸附容量(在298 K时为182.9 cm 3 / g),同时实现对C 2 H 2 / C 2 H 4和C 2 H 2的高分离性能。/ CO 2混合物。除了理论计算,还使用突破性实验证明了C 2 H 2 / C 2 H 4和C 2 H 2 / CO 2的分离效率。密度泛函理论计算进一步证实了-OH基团和超微孔结构单元在有效捕获乙炔分子方面起着重要的协同作用。