Flexible metal-organic framework compounds: In situ studies for selective CO2 capture

Published

June 19, 2015

Author(s)

Andrew J. Allen, Laura Espinal, Winnie K. Wong-Ng, Wendy Queen, Craig Brown, Steven R. Kline, Kristi L. Kauffman, Jeffrey T. Culp

Abstract

Results from in situ experiments are presented to correlate carbon capture with dynamic structural changes in two flexible metal-organic framework (MOF) materials: porous coordination polymers (PCPs) exhibiting promising carbon dioxide adsorption/desorption properties. These properties arise from different internal ligand linker arrangements. Specifically, adsorption/desorption gas isotherm measurements are compared with in situ small-angle neutron scattering (SANS) and diffraction measurements of the associated structural changes, and complimentary wide-angle neutron and X-ray diffraction measurements. The prospects for improving each system’s carbon capture functionality, including its selectivity for adsorbing CO2 from gas mixtures, are discussed with reference to a potential materials-by-design approach.

Citation

Journal of Alloys and Compounds

Volume

647

Pub Type

Journals

Download Paper

https://doi.org/10.1016/j.jallcom.2015.05.148

Keywords

selective CO2 adsorption, flexible metal organic frameworks, dynamic structure characterization, porous coordination polymers, solid sorbent materials

Citation

Allen, A. , Espinal, L. , Wong-Ng, W. , Queen, W. , Brown, C. , , S. , Kauffman, K. and Culp, J. (2015), Flexible metal-organic framework compounds: In situ studies for selective CO2 capture, Journal of Alloys and Compounds, [online], https://doi.org/10.1016/j.jallcom.2015.05.148 (Accessed October 9, 2025)