Bose et al. (2023): Suitability of a Diamine Functionalized Metal-Organic Framework for Direct Air Capture
Saptasree Bose, Debabrata Sengupta, Christos D. Malliakas, Karam B. Idrees, Haomiao Xie, Xiaoliang Wang, Michael L. Barsoum, Nathaniel M. Barker, Vinayak P. Dravid, Timur Islamoglu, Omar K Farha IN: Chemical Science, DOI: 10.1039/D3SC02554C
Metal–organic frameworks (MOFs) are a class of porous materials that have shown exciting potential as adsorbents for CO2 capture due to their high surface area and tunable properties. In this study, the authors investigate the stability and regeneration conditions of N,N′-dimethylethylenediamine (mmen) appended Mg2(dobpdc), a MOF with exceptional CO2 adsorption capacity from atmospheric air. They employed a series of systematic experiments including thermogravimetric analysis (TGA) coupled with Fourier transformed infrared (FTIR) and gas chromatography mass spectrometer (GCMS) (known as TGA-FTIR-GCMS), regeneration cycles at different conditions, control and accelerated aging experiments. The authors also quantified CO2 and H2O adsorption under humid CO2 using a combination of data from TGA-GCMS and Coulometric Karl-Fischer titration techniques.