ISIS Neutron and Muon Source Data Journal

Interaction between water and CO2 in smectite clay studied by inelastic neutron scattering

Abstract: Interactions between CO2 and clay attracts considerable interest in the scientific community. This is partly motivated by the presence of large amounts of clay in caprock formations that act as flow barriers in storage sites for CO2. However, sorption mechanisms of carbon dioxide by clays are not completely understood, and previous investigations remain controversial. One of the hypotheses for the driving mechanisms is the interaction between the gas and the residual H2O in the clay interlayer space. This interaction affect the kinetics of CO2 intercalation. By using inelastic scattering, we have identified a hitherto overlooked mechanism for CO2 adsorption in hectorite clays. We have demonstrate a valid new approach, where we study the mechanism for CO2 adsorption from the perspective of interlayer hydrogeneous species, hydroxides and water.

Principal Investigator: Professor Jon Otto Fossum
Local Contact: Dr Svemir Rudic
Experimenter: Dr Kenneth Knudsen
Experimenter: Miss Konstanse Kvalem Seljelid
Experimenter: Dr Leide Cavalcanti
Experimenter: Dr Paulo Henrique Michels Brito
Experimenter: Professor Heloisa Nunes Bordallo

DOI: 10.5286/ISIS.E.RB2310404

ISIS Experiment Number: RB2310404

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Jon Otto Fossum et al; (2024): Interaction between water and CO2 in smectite clay studied by inelastic neutron scattering, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310404

Data is released under the CC-BY-4.0 license.