Pore Environment Optimization of Microporous Metal–Organic Frameworks with Huddled Pyrazine Pillars for C2H2/CO2 Separation
Pyrazine
Isostructural
MXenes
DOI:
10.1021/acsami.2c19779
Publication Date:
2023-01-10T13:35:05Z
AUTHORS (12)
ABSTRACT
Metal-organic frameworks (MOFs) have been proven promising in addressing many critical issues related to gas separation and purification. However, it remains a great challenge optimize the pore environment of MOFs for purification specific mixtures. Herein, we report rational construction three isostructural microporous with 4,4',4"-tricarboxyltriphenylamine (H3TCA) ligand, unusual hexaprismane Ni6O6 cluster, functionalized pyrazine pillars [PYZ-x, x = -H (DZU-10), -NH2 (DZU-11), -OH (DZU-12)], where building blocks clusters huddled are reported porous first time. These enabled resulting materials exhibit good chemical stability variable chemistry, which thus contribute distinct performances toward C2H2/CO2 separation. Both single-component isotherms dynamic column breakthrough experiments demonstrate that DZU-11 PYZ-NH2 pillar outperforms its hydrogen hydroxy analogues. Density functional theory calculations reveal higher C2H2 affinity over CO2 is attributed multiple electrostatic interactions between framework, including strong C≡C···H-N (2.80 Å) interactions. This work highlights potential optimization construct smart MOF adsorbents some challenging separations.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (55)
CITATIONS (20)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....