Aluminum formate, Al(HCOO) <sub>3</sub> : An earth-abundant, scalable, and highly selective material for CO <sub>2</sub> capture-Reference-Cited by-同舟云学术

Aluminum formate, Al(HCOO) ₃ : An earth-abundant, scalable, and highly selective material for CO ₂ capture

Published:2022-11-04 Issue:44 Volume:8 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Evans Hayden A.¹^ORCID,Mullangi Dinesh²^ORCID,Deng Zeyu²^ORCID,Wang Yuxiang³^ORCID,Peh Shing Bo³^ORCID,Wei Fengxia⁴^ORCID,Wang John²^ORCID,Brown Craig M.¹⁵^ORCID,Zhao Dan³^ORCID,Canepa Pieremanuele²³^ORCID,Cheetham Anthony K.²⁶^ORCID

Affiliation:

1. Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA.

2. Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore.

3. Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore.

4. Institute of Materials Research and Engineering, Agency for Science Technology and Research, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore.

5. Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.

6. Materials Research Laboratory, University of California, Santa Barbara, Santa Barbara, CA 93106, USA.

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 CO 2 adsorption capacities and outstanding CO 2 /N 2 selectivity that enable it to remove CO 2 from dried CO 2 -containing gas streams at elevated temperatures (323 kelvin). Notably, ALF is scalable, readily pelletized, stable to SO 2 and NO, and simple to regenerate. Density functional theory calculations and in situ neutron diffraction studies reveal that the preferential adsorption of CO 2 is a size-selective separation that depends on the subtle difference between the kinetic diameters of CO 2 and N 2 . The findings are supported by additional measurements, including Fourier transform infrared spectroscopy, thermogravimetric analysis, and variable temperature powder and single-crystal x-ray diffraction.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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