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Title: Aluminum formate, Al(HCOO)3: An earth-abundant, scalable, and highly selective material for CO2 capture.
Authors: Evans, Hayden A
Mullangi, Dinesh 
Deng, Zeyu 
Wang, Yuxiang
Peh, Shing Bo 
Wei, Fengxia
Wang, John 
Brown, Craig M
Zhao, Dan 
Canepa, Pieremanuele 
Cheetham, Anthony K 
Issue Date: 4-Nov-2022
Publisher: American Association for the Advancement of Science (AAAS)
Citation: Evans, Hayden A, Mullangi, Dinesh, Deng, Zeyu, Wang, Yuxiang, Peh, Shing Bo, Wei, Fengxia, Wang, John, Brown, Craig M, Zhao, Dan, Canepa, Pieremanuele, Cheetham, Anthony K (2022-11-04). Aluminum formate, Al(HCOO)3: An earth-abundant, scalable, and highly selective material for CO2 capture.. Sci Adv 8 (44) : eade1473-. ScholarBank@NUS Repository.
Abstract: A combination of gas adsorption and gas breakthrough measurements show that the metal-organic framework, Al(HCOO)3 (ALF), which can be made inexpensively from commodity chemicals, exhibits excellent CO2 adsorption capacities and outstanding CO2/N2 selectivity that enable it to remove CO2 from dried CO2-containing gas streams at elevated temperatures (323 kelvin). Notably, ALF is scalable, readily pelletized, stable to SO2 and NO, and simple to regenerate. Density functional theory calculations and in situ neutron diffraction studies reveal that the preferential adsorption of CO2 is a size-selective separation that depends on the subtle difference between the kinetic diameters of CO2 and N2. The findings are supported by additional measurements, including Fourier transform infrared spectroscopy, thermogravimetric analysis, and variable temperature powder and single-crystal x-ray diffraction.
Source Title: Sci Adv
ISSN: 2375-2548
DOI: 10.1126/sciadv.ade1473
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