Metal-Organic Framework with Rich Accessible Nitrogen Sites for Highly Efficient CO2 Capture and Separation

Yingxiang Ye; Heng Zhang; Liangji Chen; Shimin Chen; Quanjie Lin; Fangfang Wei; Zhangjing Zhang; Shengchang Xiang

doi:10.1021/acs.inorgchem.9b00182

Metal-Organic Framework with Rich Accessible Nitrogen Sites for Highly Efficient CO₂ Capture and Separation

Inorg Chem. 2019 Jun 17;58(12):7754-7759. doi: 10.1021/acs.inorgchem.9b00182. Epub 2019 May 30.

Authors

Yingxiang Ye¹, Heng Zhang¹, Liangji Chen¹, Shimin Chen¹, Quanjie Lin¹, Fangfang Wei¹, Zhangjing Zhang¹, Shengchang Xiang¹

Affiliation

¹ Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science , Fujian Normal University , 32 Shangsan Road , Fuzhou 350007 , P. R. China.

PMID: 31145596
DOI: 10.1021/acs.inorgchem.9b00182

Abstract

A novel microporous metal-organic framework (FJU-44), with abundant accessible nitrogen sites on its internal surface, was constructed from the tetrapodal tetrazole ligand tetrakis(4-tetrazolylphenyl)ethylene (H₄TTPE) and copper chloride. Notably, the CO₂ uptake capacity (83.4 cm³/g, at 273 K and 1 bar) in the activated FJU-44a is higher than most of tetrazolate-containing MOF materials. Particularly, FJU-44a exhibits superior adsorption selectivity of CO₂/N₂ (278-128) and CO₂/CH₄ (44-16), which is comparable to some well-known CO₂ capture materials. Furthermore, the fixed-bed breakthrough experiment indicates that the postcombustion flue gas flow over a packed column with FJU-44a adsorbents can be effectively separated.