ISIS Neutron and Muon Source Data Journal

The structural role of carbonate groups in glass

Abstract: We request GEM beamtime to study the structure of samples of sodium silicate glass with and without CO3 carbonate groups. The presence of CO3 carbonate groups in the glasses is a challenge to standard ideas about glass structure, because of the large valence of C-O bonds. By determining the environment of the CO3 groups we may be able to explain why CO2 cannot be dissolved in glasses below a certain modifier content (56 mol% Na2O for sodium silicate glasses), and yet beyond this composition the additional CO2 seems to be almost completely retained. It is unlikely that there are CO2 molecules trapped in the glass, but if they are there then the neutron diffraction results will have a good sensitivity to their presence. Dissolved CO2 in silicates (either as CO3 groups or CO2 molecules) is of particular geological interest.

Principal Investigator: Dr Alex Hannon
Experimenter: Professor Steven Feller
Experimenter: Dr Diane Holland
Experimenter: Mr Colin Flynn
Experimenter: Mr Michael Wall
Experimenter: Mr Hector Rea

DOI: 10.5286/ISIS.E.RB1710454

ISIS Experiment Number: RB1710454

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:
Dr Alex Hannon et al; (2017): The structural role of carbonate groups in glass, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1710454

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