The application of thermomicroscopy to the temperature programmed reduction in metal oxides

Thermomicroscopy, or hot-stage microscopy, is primarily used in the analysis of organic materials such as pharmaceuticals and polymers. However, its potential application to the study of inorganic systems remains largely unexplored. A thermomicroscope was developed utilising red, green, blue (RGB) c...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2023-06, Vol.148 (12), p.5395-5401
Main Authors: Ashton, Gage P., Charsley, Edward L., Gillie, Lisa J., Harding, Lindsay P., Parkes, Gareth M. B., Watson, Adam J.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Cobalt
Cobalt oxides
Inorganic Chemistry
Lead oxides
Measurement Science and Instrumentation
Metal oxides
Organic materials
Oxides
Photomicrographs
Physical Chemistry
Polymer Sciences
Silver
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Summary:Thermomicroscopy, or hot-stage microscopy, is primarily used in the analysis of organic materials such as pharmaceuticals and polymers. However, its potential application to the study of inorganic systems remains largely unexplored. A thermomicroscope was developed utilising red, green, blue (RGB) colour profiles and individual micrographs taken at fixed temperatures to follow temperature programmed reduction processes under a hydrogen atmosphere. The instrument was used for the study of the reduction in the oxides of silver, copper, lead, and cobalt. To the best of the authors’ knowledge, this is the first time that temperature programmed reduction processes have been followed using thermomicroscopy and our results suggest the presence of transient intermediate phases within the lead oxide and cobalt oxide systems. Graphical abstract
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-023-12123-2