钴
吸附
金属有机骨架
选择性
热扩散率
扩散
化学
分子
物理化学
气体分离
热力学
材料科学
无机化学
催化作用
有机化学
物理
生物化学
膜
作者
Bohan Shan,Jiuhao Yu,Mitchell R. Armstrong,Dingke Wang,Bin Mu,Zhenfei Cheng,Jichang Liu
出处
期刊:Aiche Journal
[Wiley]
日期:2017-05-18
卷期号:63 (10): 4532-4540
被引量:21
摘要
In this study, a new cobalt‐based metal‐organic framework (MOF), [ (μ 3 ‐OH) 2 (ipa) 5 (C 3 O 2 )(DMF) 2 ] (CoIPA) was synthesized. The crystal structure analysis shows that CoIPA is constructed by Co 6 (μ 3 ‐OH) 2 units linked by isophthalic acid forming a sxb topology and it possesses a small pore size of about 4 Å. The new MOF has been characterized using multiple experimental methods. Monte Carlo and Molecular Dynamic simulations were employed to investigate adsorption equilibrium and kinetics in terms of capacity and diffusivity of CO 2 , N 2 , and CH 4 on CoIPA. The gas adsorption isotherms collected experimentally were used to verify the simulation results. The activated CoIPA sample exhibits great gas separation ability at ambient conditions for CO 2 /N 2 and CO 2 /CH 4 with selectivity of around 61.4 and 11.7, respectively. The calculated self‐diffusion coefficients show a strong direction dependent diffusion behavior of target molecules. This high adsorption selectivity for both CO 2 /N 2 and CO 2 /CH 4 makes CoIPA a potential candidate for adsorptive CO 2 separation. © 2017 American Institute of Chemical Engineers AIChE J , 63: 4532–4540, 2017
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