E.s.r. study of pyrolysis vapour of coal
โ Scribed by Soon Sam Kim; Mark L. Jarand; Kandaswamy Durai-Swamy
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 361 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0016-2361
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โฆ Synopsis
Wyodak and Heatburg subbituminous coals were pyrolysed in-situ in an e.s.r. microwave cavity at -510ยฐC in an evacuated sealed tube. At least two kinds of radicals are detected; first, phenalenyl-like radicals and then, polymerized radicals from the initial ones.
๐ SIMILAR VOLUMES
An investigation was carried out to explore the importance of two line-broadening mechanisms which may be responsible for the width of the electron spin resonance signals exhibited by coals. Studies of catalytically dehydrogenated coals, isotopically substituted low-temperature chars, and a large nu