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203. An in situ electron spin resonance investigation of the free radicals in coal depolymerization

✍ Scribed by L. Petrakis; D.W. Grandy

Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 124 KB
Volume: 20
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(82)90622-4

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✦ Synopsis

Abstracts 147 wedge disclinations (+?T, -or, t2r, -274 at the free surface of carbonaceous mesophase have been observed dynamically on a hot stage. The response of the disclinations to mechanical deformation is illustrated and discussed.

key role in the depolymerization and subsequent reaction of coal, including gasification and liquefaction. We will summarize our recent studies using a uniquely designed high temperature and high pressure ESR cavity for in situ investigation of free radicals under realistic process conditions.

199. Mimed disclmatfons

J. E. Zimmer (Acurex Corporation, Mountain View, CA 94042). Optical micrographic evidence has been obtained for mixed disclinations, with both wedge and twist character. These mixed disclinations are notable in conjunction with disclination loops in the morphology of bubble walls. An assessment has been made of the relative density of pure and mixed disclinations in typical mesophase microstructures.

ESR study on the formation of coke texture

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