Strategies for Improving the CO 2 Adsorption Process of CPO-27-Mg through Thermal Treatment and Urea Functionalization.
Materials(2022)
Abstract
In this work, the influence of degassing temperature and urea functionalization were investigated as ways to improve the CO adsorption performance of CPO-27-Mg. Through post-synthesis modification treatments, four samples with different degrees of urea functionalization were obtained, incorporating 10, 25, 50, and 100% of urea concerning the metal sites of the MOF. Alternatively, the influence of the degassing temperature of the non-functionalized MOF between 70 and 340 °C was also evaluated. The resulting compounds were characterized by N adsorption-desorption isotherms at -196 °C using TGA-MS, FTIR, and PXRD. Finally, the thermally treated and functionalized CPO-27-Mg was evaluated for CO capture.
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Key words
CO2 adsorption,CPO-27,MOFs,functionalization
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