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A tetrazole-functionalized Cu-MOF for efficient C2H2/CO2 separation
Jingjing Chen1, Fugang Li1, Zihao Zhao2
1Shandong Key Laboratory of Intelligent Energy Materials, School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China. dfsun@upc.edu.cn.
None:
To separate acetylene (C2H2) and carbon dioxide (CO2) with similar properties, discovering new metal-organic framework (MOF) adsorbents is vital to advancing practical applications. Herein, we report a three-dimensional Cu-MOF, [Cu(BDC-tetrazole)] (UPC-115), with 2-(1H-tetrazol-1-yl)terephthalic acid (H2BDC-tetrazole) as a ligand. The functionalization of tetrazole not only provides abundant adsorption sites, but also involves one nitrogen atom in coordination to generate a stable structure with one-dimensional rhombic channels of 6.6 Å × 5.4 Å. Static adsorption isotherms, dynamic breakthrough curves, and computational simulations collaboratively demonstrate the efficient C2H2/CO2 separation performance of UPC-115.

