ISIS Neutron and Muon Source Data Journal

Neutron diffraction to monitor the state of a non-stoichiometric solid employed in chemical looping

Abstract: An unmixed reaction is a dynamic process in which e.g. a metal oxide (which acts as an oxygen-carrier material) is used to e.g. provide oxygen for a reaction during which the oxide itself undergoes reduction. The reduced oxide or metal is then reoxidised in a second step. Here we perform reoxidation with water in order to produce hydrogen. We intend to look at the state of reactor beds after use in chemical looping. These will be ‘frozen’ and powdered after operation under inert gas to minimise surface reorganisation and changes in bulk oxidation states. The beds for characterisation will be obtained after an oxidation half cycle, a reduction half cycle and, for reference, after 12 hours exposed to a water to hydrogen ratio of unity. This will allow us to determine the average oxidation state of surface and bulk materials after operation.

Principal Investigator: Professor Ian Metcalfe
Experimenter: Dr Martin Jones
Local Contact: Dr Kevin Knight
Experimenter: Dr Brian Ray
Experimenter: Dr Evangelos Papaioannou
Experimenter: Dr Francisco Garcia-Garcia
Local Contact: Dr Kevin Knight

DOI: 10.5286/ISIS.E.RB1610174

ISIS Experiment Number: RB1610174

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 Ian Metcalfe et al; (2016): Neutron diffraction to monitor the state of a non-stoichiometric solid employed in chemical looping, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610174

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