TY - JOUR
T1 - Methyl group migration during heat treatment of coal in the presence of polycyclic aromatic compounds
AU - Kidena, K.
AU - Bandoh, N.
AU - Kouchi, M.
AU - Murata, S.
AU - Nomura, M.
N1 - Funding Information:
This work was partially supported by the Japan Institute of Energy. We thank CCUJ, ISIJ, NBCL and Nippon Steel Chemical, Ltd for providing coal samples.
PY - 2000/2
Y1 - 2000/2
N2 - Migration reaction of methyl groups during heat treatment of both coal and its model compounds with aromatic compounds was studied. The reaction of coal with anthracene at 420 °C for 5 rain gave a mixture of methylanthracene (MA) isomers along with 9,10-dihydroanthracene (DHA) and 1,2,3,4-tetrahydroanthracene, the formation of the former compound indicating participation of methyl radicals. We found that the yield of MA could be correlated with the concentration of methyl groups in coal determined by NMR analysis. To discuss the detailed mechanism, we conducted the migration reaction of methyl group using model compounds. The results suggested that heating of 9-alkylanthracenes (methyl or ethyl) and 9-methoxyanthracene in the presence of hydrogen donating aromatics leads to release of alkyl radicals (methyl or ethyl), which can be convened to gases (methane or ethane) and alkylarenes depending on the radical accepting nature of arenes employed.
AB - Migration reaction of methyl groups during heat treatment of both coal and its model compounds with aromatic compounds was studied. The reaction of coal with anthracene at 420 °C for 5 rain gave a mixture of methylanthracene (MA) isomers along with 9,10-dihydroanthracene (DHA) and 1,2,3,4-tetrahydroanthracene, the formation of the former compound indicating participation of methyl radicals. We found that the yield of MA could be correlated with the concentration of methyl groups in coal determined by NMR analysis. To discuss the detailed mechanism, we conducted the migration reaction of methyl group using model compounds. The results suggested that heating of 9-alkylanthracenes (methyl or ethyl) and 9-methoxyanthracene in the presence of hydrogen donating aromatics leads to release of alkyl radicals (methyl or ethyl), which can be convened to gases (methane or ethane) and alkylarenes depending on the radical accepting nature of arenes employed.
UR - http://www.scopus.com/inward/record.url?scp=0342526825&partnerID=8YFLogxK
U2 - 10.1016/S0016-2361(99)00166-0
DO - 10.1016/S0016-2361(99)00166-0
M3 - 会議記事
AN - SCOPUS:0342526825
SN - 0016-2361
VL - 79
SP - 317
EP - 322
JO - Fuel
JF - Fuel
IS - 3-4
T2 - Proceedings of the 1999 International Symposium on Fundamentals for Innovative Coal Utalization
Y2 - 2 February 1999 through 4 February 1999
ER -