(687e) Regenerable Mesoporous MgO Calcined from Metal Organic Frameworks (MOFs) for CO2 Capture
Here we present the synthesis of magnesium oxide nanoparticles created via thermal decomposition of metal organic frameworks (MOFs)9,10, which demonstrates improved regenerability in recurring CO2 adsorption processes. In this case, a magnesium containing MOF is first synthesized via solvothermal process as the precursor, followed by calcination under air atmospheres to generate magnesium oxide nanoparticles. Characterization techniques such as X-ray diffraction, SEM, TEM, EDX, IR and BET surface area analysis were applied to obtain the structural and elemental information of magnesium oxide nanoparticles, while their CO2 adsorption characteristics were analyzed using TGA. The results show that the magnesium oxide nanoparticles in this work have high surface area and CO2 adsorption capacities. Most importantly, magnesium oxides in this work exhibit enhanced regenerability compared to those made from conventional precursors7,8. More details about the impacts of different calcination conditions like temperatures and heating rates onto CO2 adsorption capacities and regenerability, as well as the explanations for good regenerability will be discussed.
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