Complete Utilization of Ligand Coordination Sites in Co-MOF for C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub> Separation
Separating acetylene (C<sub>2</sub>H<sub>2</sub>) and carbon dioxide (CO<sub>2</sub>) is challenging due to their similar properties. Metal-organic frameworks (MOFs) are promising adsorbents for this separation, and the discovery of new structures is vital for advancing MOF applications. Herein, we report a two-dimensional Co-MOF, [Co(H<sub>2</sub>O)<sub>2</sub>(DCBA)<sub>0.5</sub>] (UPC-117), with 4″,6'-diamino-5',5″-bis(4-carboxyphenyl)-[1,1':3',1″:3″,1‴-quaterphenyl]-4,4‴-dicarboxylic acid (H<sub>4</sub>DCBA) as ligand. It is rarely observed that all four carboxyl groups and two amino groups of H<sub>4</sub>DCBA are involved in coordination, affording one-dimensional rhombic channels of 4.0 Å × 10.4 Å in UPC-117. The exposed open metal sites after activation endow UPC-117 with an excellent C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub> separation performance, which is evidenced by static adsorption isotherms, dynamic breakthrough curves, and theoretical calculations.
Authors
- Zhe Ma (ORCID: https://orcid.org/0000-0001-9249-2214)
- Bin Shao (ORCID: https://orcid.org/0000-0002-9953-7275)
- Weidong Fan (ORCID: https://orcid.org/0000-0002-7139-4137)
- S. Yu
- Hui Chen (ORCID: https://orcid.org/0000-0001-6883-3752)
- Yang Liu (ORCID: https://orcid.org/0000-0002-0367-8189)
- Jingjing Chen (ORCID: https://orcid.org/0000-0002-5189-3916)
- Xiaokang Wang
- Marcel S. F. Lie Ken Jie
Institutions
- Shandong University of Technology (CN)
- Division of Materials Science and Engineering (AU)
- Intelligent Energy (United Kingdom) (GB)
- China University of Petroleum, East China (CN)
- Shandong University of Science and Technology (CN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-06-16
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c02031
- Citations
- 6
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 3.22