✦ LIBER ✦
Carbonyl groups from chemically and thermally promoted decomposition of peroxides on coal surfaces: Detection of specific types using photoacoustic infrared fourier transform spectroscopy
✍ Scribed by Brian M. Lynch; Lai-Im Lancaster; J.Anthony MacPhee
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 621 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0016-2361
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✦ Synopsis
Detection of new carbonyl-type functionality at the surfaces of powdered bituminous coals is illustrated by the technique of photoacoustic infrared Fourier transform (PAIFT) spectroscopy. These species are generated both by base-promoted and by thermal decompositions of precursor peroxides, postulated as ubiquitous constituents at the surfaces of all except the most freshly prepared samples. In artificially oxidized coals, there are quantitative associations between the level of thermally generated carbonyl content revealed by PAIFT spectra and plastic properties of the coals.