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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Computational study of CO2 storage in metal-organic frameworks
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Computational study of CO2 storage in metal-organic frameworks

机译:金属有机框架中二氧化碳存储的计算研究

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In this work a systematic computational study was performed to investigate the effects of organic linker, pore size and topology, and the electrostatic fields on the adsorption and diffusion behaviors of CO2 in nine typical metal-organic frameworks (MOFs), showing that the high CO2 storage capacity achieved in MOFs is a complex interplay of these structural properties. Under practical application conditions, MOFs show higher CO2 storage capacity than both zeolites and carbon materials, and the suitable pore size is between 1.0 and 2.0 nm. For MOFs with pore size located in the above range, the larger the accessible surface area and free volume, the higher the CO2 storage capacity can be achieved in practical applications. In addition, this work shows that the self-diffusivity of CO2 in the MOFs is comparative in magnitude with that of zeolites.
机译:在这项工作中,进行了系统的计算研究,以研究有机连接基,孔径和拓扑结构以及静电场对九种典型金属有机骨架(MOF)中CO2的吸附和扩散行为的影响,表明高CO2 MOF中实现的存储容量是这些结构特性的复杂相互作用。在实际应用条件下,MOF的二氧化碳存储能力要比沸石和碳材料都高,并且合适的孔径在1.0至2.0 nm之间。对于孔径在上述范围内的MOF,可触及表面积和自由体积越大,在实际应用中可以实现越高的CO2储存能力。此外,这项工作表明,MOF中CO2的自扩散程度与沸石相当。

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