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Green and scalable synthesis of functionalized Al(III)-MOFs for SO2 capture
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DOI：10.1002/aic.70519.png)
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Abstract
En 中文
The severe environmental impact of SO2 in fossil fuel combustion flue gas necessitates the development of crucial adsorption techniques for its capture, especially at trace concentrations. Herein, we systematically investigate the influence of NH2 and CH3 functional groups in microporous Al(III)-based metal–organic framework (MOF) (CAU-10) on SO2 capture performance. The results demonstrate that CAU-10-NH2 exhibits an SO2 adsorption capacity of 40.32 cm3/g at 1 kPa and 69.44 cm3/g at 10 kPa, outperforming most reported MOFs under comparable conditions. Owing to its relatively low SO2 adsorption enthalpy (30 kJ/mol), CAU-10-NH2 allows facile desorption and efficient regeneration. Furthermore, a green, aqueous-based synthesis strategy was developed for the scalable production of CAU-10-NH2, enabling kilogram-scale synthesis via a streamlined one-pot process. The outstanding SO2 adsorption and selectivity, together with a scalable, cost-effective, and environmentally benign synthesis, render CAU-10-NH2 a promising candidate for practical SO2 capture.
Keywords:
gas adsorption
green and scalable synthesis
metal–organic frameworks
sulfur dioxide
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4
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1.1W
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2.9W
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