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Neutron Diffraction Structural Study of CO2 Binding in Mixed-Metal CPM-200 Metal-Organic Frameworks
Published
Author(s)
Anthony J. Campanella, Benjamin Trump, Eric J. Gosselin, Eric D. Bloch, Craig Brown
Abstract
Metal-organic frameworks featuring open metal coordination sites have been widely studied for the separation of gas mixtures. For CO2/N2 separations, these materials have shown considerable promise. Herein, we report the characterization of a subset of the well-known PCN-250 class of frameworks upon CO2 adsorption via powder neutron diffraction methods. Noteably, in contrast to previously reported data, they display only moderate CO2 adsorption enthalpies, based on metal cation-CO2 interactions. Further, we show charge balance in these materials is likely achieved via ligand vacancies rather than the presence of υ3-OH groups in the trimetallic cluster that comprises them.
Campanella, A.
, Trump, B.
, Gosselin, E.
, Bloch, E.
and Brown, C.
(2020),
Neutron Diffraction Structural Study of CO<sub>2</sub> Binding in Mixed-Metal CPM-200 Metal-Organic Frameworks, Chemical Communications, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=929201
(Accessed October 17, 2025)