Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: May 6, 2025
The separation of acetylene (C2H2) from carbon dioxide (CO2) is important in industry but challenging due to their similar physical properties. Herein, a boron-rich 2D metal-organic framework ZNU-14 based on the carborane backbone was readily prepared by supramolecular assembly Zn2+, p-C2B10H10-(COOH)2, and di(pyridin-4-yl) amine under mild conditions for C2H2/CO2 separation. displays straight 1D channel (7.6 × 12.5 Å2) with an electronegative pore surface. Gas adsorption isotherms show that has good C2H2 capacity 43.6 cm3 g-1, 181% CO2 uptake capacity. calculated ideal adsorbed solution theory (IAST) selectivity as high 6.3-9.7, outperforming many popular materials. moderate heat 34.3 kJ mol-1 facilitates straightforward desorption regeneration ZNU-14. Furthermore, theoretical study confirmed stronger binding compared CO2. practical performance fully demonstrated breakthrough experiments excellent dynamic recyclability various conditions.
Language: Английский