A High-Stability Co-MOF with Open Metal Sites for C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub>/CH<sub>4</sub> Separation
One-step purification of C<sub>2</sub>H<sub>2</sub> from ternary mixtures (C<sub>2</sub>H<sub>2</sub>, CO<sub>2,</sub> and CH<sub>4</sub>) can significantly reduce the energy consumption of the separation process, but it is extremely challenging. A new Co-MOF (TNU-BTTB-1) with a three-dimensional (3D) framework was synthesized, which displays high thermal stability, retaining its structural integrity at temperatures up to 400 °C. The structure possesses rich accessible open metal sites in the porous walls and shows high uptake for C<sub>2</sub>H<sub>2</sub> (37.4 cm<sup>3</sup> g<sup>-1</sup>) and significant adsorption selectivity for C<sub>2</sub>H<sub>2</sub> over CH<sub>4</sub> (20.1) and CO<sub>2</sub> (4.9) at 298 K and 100 kPa. Dynamic breakthrough studies show that it exhibits excellent C<sub>2</sub>H<sub>2</sub> separation from C<sub>2</sub>H<sub>2</sub>/CO<sub>2</sub>/CH<sub>4</sub> three-component mixtures.
Authors
- Cheng‐Peng Li (ORCID: https://orcid.org/0000-0002-6798-9541)
- Zhengyi Di (ORCID: https://orcid.org/0000-0001-9770-4044)
- Tianyi Hou (ORCID: https://orcid.org/0000-0003-2170-5918)
- Yuanyuan Zhang (ORCID: https://orcid.org/0000-0003-4285-2853)
- He Wang (ORCID: https://orcid.org/0000-0001-5514-0666)
Institutions
- Tianjin Normal University (CN)
- Center for Interdisciplinary Studies (IN)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2025-02-18
- DOI
- https://doi.org/10.1021/acs.inorgchem.5c00327
- Citations
- 9
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 4.84
Funders
- National Natural Science Foundation of China