Efficient CO2/CO separation through channel confinements in an amino-coordinated metal-organic framework

被引:8
作者
Chen, Sheng [1 ]
Lin, Shiwei [1 ]
Zhang, Ling [1 ]
机构
[1] Hainan Univ, Sch Mat Sci & Engn, Haikou 570228, Peoples R China
基金
中国国家自然科学基金; 海南省自然科学基金;
关键词
Porous materials; Crystal structure; Gas separation; ADSORPTION; CO; N-2; CH4;
D O I
10.1016/j.matlet.2022.133064
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
There are still great challenges in developing promise adsorbents to achieve high CO2/CO selectivity associated with low energy consume. Here, we report an amino-coordinated metal-organic framework (ZJU-198) featuring unique overlapping channels that allow the transport of CO2 molecules, but efficiently exclude CO molecules. It thus shows a high CO2 adsorption (3.50 mmol/g) and very high adsorptive selectivity (20.5) for 50/50 CO2/CO separation at ambient conditions, which are superior to most of developed adsorbents. Moreover, the moderate host-guest affinity leads to the low regeneration cost of ZJU-198, thus offering its great potential for refining the industrial syngas.
引用
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页数:3
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