دورية
Construction of Coordination Spaces with Narrow Pore Windows in Co-Based Metal–Organic Frameworks toward CO2/N2Separation
| العنوان: | Construction of Coordination Spaces with Narrow Pore Windows in Co-Based Metal–Organic Frameworks toward CO2/N2Separation |
|---|---|
| المؤلفون: | Zhang, Da-Shuai, Zhang, Zhen-Wei, Li, Fan-Cui, Huang, Hongliang, Hu, Hui, Zhang, Yong-Zheng, Geng, Longlong, Wei, Rongmin, Zhang, Xiuling, Li, Wei, Li, Yun-Wu |
| المصدر: | Inorganic Chemistry; August 2024, Vol. 63 Issue: 34 p15915-15923, 9p |
| مستخلص: | Carbon emission reduction is an important measure to mitigate the greenhouse effect, which has become a hotspot in global climate change research. To contribute to this, here, we fabricated two Co-based metal–organic frameworks (Co-MOFs), namely, {[Co3(NTB)2(bib)]·(DMA)2·(H2O)4}n(DZU-211) and {[Co3(NTB)2(bmip)]·(DMA)2}n(DZU-212) (H3NTB = 4,4′,4″-nitrilotribenzoic acid, bib = 1,4-bis(imidazol-1-yl)-butane, bmip = 1,3-bis(2-methyl-1H-imidazol-1-yl)propane) to realize efficient CO2/N2separation by dividing coordination spaces into suitable pores with narrow windows. DZU-211 reveals a 3D open porous framework, while DZU-212 exhibits a 3D double-fold interpenetrated structure. The two MOFs both possess large coordination spaces and small open pore sizes, via the bib ligand insertion and framework interpenetration, respectively. Comparatively, DZU-211 reveals superior selective CO2uptake properties due to its more suitable pore characteristics. Gas sorption experiments show that DZU-211 has a CO2uptake of 52.6 cm3g–1with a high simulated CO2/N2selectivity of 101.7 (298 K, 1 atm) and a moderate initial adsorption heat of 38.1 kJ mol–1. Moreover, dynamic breakthrough experiments confirm the potential application of DZU-211 as a CO2separation material from postcombustion flue gases. |
| قاعدة البيانات: | Supplemental Index |
Find this issue from the American Chemical Society | تدمد: | 00201669 1520510X |
|---|---|
| DOI: | 10.1021/acs.inorgchem.4c02251 |