Health & Environmental Research Online (HERO)


Print Feedback Export to File
8549586 
Journal Article 
The Hydrogenation Mechanism of Various Hokkaido Coals 
Hasegawa, Y; Maekawa, Y 
1980 
1 
Nippon Kagaku Kaishi
ISSN: 0369-4577
EISSN: 2185-0925 
1980 
6 
916-922 
English 
Hydrogenation of Sohya coal (C 70. 3%), Sumiyoshi coal (C 75.5%), Taiheiyo coal (C 76.7 %) and Yubari coal (C 84. 0%) under high pressure were carried out using a batch autoclave. The reaction product was fractionated by hexane and benzene. The structural parameters of each fraction were calculated from the ‘H-NMR spectra and the elemental analysis data by using the Brown-Ladner's equations. The reaction mechanism of the hydrogenation were discussed by following up the changes in the structural parameters of the reaction products in the course of reaction. The chemical reactions which are common to all coals were depolymerizatiori (decomposition of the linking uni t structures), dealkylation and hydro-genolsis of the aromatic rings. The hydrogenation reactivity of the aromatic ring in the structural unit is increased with the decrease of the number of aromatic rings in the structural unit and with the increase of oxygen in the structure. © 1980, The Chemical Society of Japan. All rights reserved.