TY - JOUR
T1 - The origin of aliphatic hydrocarbons in brown coal liquefaction
T2 - Reactions of a model acid, alcohol and ester
AU - Bongers, Geoffrey D.
AU - Burgess, Caroline E.
AU - Chan, John S.T.
AU - Jackson, W. Roy
AU - Patti, Antonio F.
AU - Marshall, Marc
PY - 1996/1/1
Y1 - 1996/1/1
N2 - A model long-chain alcohol (n-C22), carboxylic acid (n-C20) and ester (n-C20 + n-C22) have been reacted under coal liquefaction conditions at 320 and 405°C with both hydrogen and carbon monoxide-water as reducing systems. The products of these reactions were characterized by g.c., g.c.-m.s. and mass spectroscopy. In addition to materials with the same carbon number as the starting compounds, lower-molecular-weight materials arising from fragmentation and higher-molecular-weight compounds arising from radical recombination reactions were detected. Reactions with CO-H2O gave different product distributions from reactions with H2-SnO2 and H2-tetralin, and these differences have been correlated with differences observed in reactions of low-rank coals. Reactions of eicosanoic (C20) acid with hydrogen at temperatures from 320 to 415°C showed an unexpected formation of the ester CH3(CH2)18CO2(CH2) 19CH3, especially for H2-SnO2 reactions at 365°C.
AB - A model long-chain alcohol (n-C22), carboxylic acid (n-C20) and ester (n-C20 + n-C22) have been reacted under coal liquefaction conditions at 320 and 405°C with both hydrogen and carbon monoxide-water as reducing systems. The products of these reactions were characterized by g.c., g.c.-m.s. and mass spectroscopy. In addition to materials with the same carbon number as the starting compounds, lower-molecular-weight materials arising from fragmentation and higher-molecular-weight compounds arising from radical recombination reactions were detected. Reactions with CO-H2O gave different product distributions from reactions with H2-SnO2 and H2-tetralin, and these differences have been correlated with differences observed in reactions of low-rank coals. Reactions of eicosanoic (C20) acid with hydrogen at temperatures from 320 to 415°C showed an unexpected formation of the ester CH3(CH2)18CO2(CH2) 19CH3, especially for H2-SnO2 reactions at 365°C.
KW - Coal liquefaction
KW - Long-chain esters
KW - Model compounds
UR - http://www.scopus.com/inward/record.url?scp=0040361093&partnerID=8YFLogxK
U2 - 10.1016/0016-2361(95)00286-3
DO - 10.1016/0016-2361(95)00286-3
M3 - Article
AN - SCOPUS:0040361093
SN - 0016-2361
VL - 75
SP - 591
EP - 596
JO - Fuel
JF - Fuel
IS - 5
ER -