The origin of aliphatic hydrocarbons in brown coal liquefaction

Reactions of a model acid, alcohol and ester

Geoffrey D. Bongers, Caroline Elaine Clifford, John S.T. Chan, W. Roy Jackson, Antonio F. Patti, Marc Marshall

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)591-596
Number of pages6
JournalFuel
Volume75
Issue number5
DOIs
StatePublished - Jan 1 1996

Fingerprint

Coal liquefaction
Coal
Lignite
Carbon Monoxide
Hydrocarbons
Hydrogen
Esters
Alcohols
Molecular weight
Acids
Carboxylic Acids
Carboxylic acids
Carbon monoxide
Carbon
Spectroscopy
Water
Temperature
tetralin

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Cite this

Bongers, Geoffrey D. ; Clifford, Caroline Elaine ; Chan, John S.T. ; Jackson, W. Roy ; Patti, Antonio F. ; Marshall, Marc. / The origin of aliphatic hydrocarbons in brown coal liquefaction : Reactions of a model acid, alcohol and ester. In: Fuel. 1996 ; Vol. 75, No. 5. pp. 591-596.
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The origin of aliphatic hydrocarbons in brown coal liquefaction : Reactions of a model acid, alcohol and ester. / Bongers, Geoffrey D.; Clifford, Caroline Elaine; Chan, John S.T.; Jackson, W. Roy; Patti, Antonio F.; Marshall, Marc.

In: Fuel, Vol. 75, No. 5, 01.01.1996, p. 591-596.

Research output: Contribution to journalArticle

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AU - Clifford, Caroline Elaine

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