Reaction of carbon-14-labeled reagents with coal [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1980.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: Pages: 12 : digital, PDF file
Additional Creators:: Oak Ridge National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

Both asphaltenes and preasphaltenes from Illinois No. 6 vitrain exhibit enhanced uptake of /sup 14/CH/sub 2/N/sub 2/ after air exposure. Preasphaltenes however exhibit decreased /sup 14/CC1/sub 2/ uptake after oxygen treatment. These results are in agreement with a scheme in which aryl alkyl ethers and benzylic-type linkages are oxidized to ketones and then carboxylic acids. Heat treatment of Wyodak coal appears to destroy most of the aryl alkyl ethers present, since HBr-treated Wyodak, after reacting with diazomethane-/sup 14/C contains twice the acid-hydrolyzable methyl-/sup 14/C groups exhibited by heat-treated Wyodak. Thermolysis of ..cap alpha..-naphthol-/sup 14/C and of ..beta..-naphthol-/sup 14/C in the presence of Illinois No. 6 coal results in loss of hydroxyl to produce water as well as in alkylation of the naphthalene nucleus, processes which we presume also occur in the phenolic moieties in the coal itself. Thiophenol-/sup 14/C yields hydrogen sulfide, toluene, ethylbenzene, thianthrene, and dibenzothiophene. The results for the thermolyses of ..cap alpha..- and ..beta..-naphthol-/sup 14/C and of thiophenol-/sup 14/C are explained through free radical mechanisms quite similar to those previously postulated for the thermolyses of model compounds in the presence of tetralin.

Report Numbers:

E 1.99:conf-801227-2
conf-801227-2

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Note:

Published through SciTech Connect.
01/01/1980.
"conf-801227-2"
Atomic and nuclear methods in fossil energy research meeting, Mayaguez, Puerto Rico, 1 Dec 1980.
Collins, C. J.; Raaen, V. F.; Hilborn, C.; Roark, W. H.; Maupin, P. H.

Funding Information:

W-7405-ENG-26

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