04/01725 Quantitative characterization of coal properties using bidirectional diffuse reflectance spectroscopy: Cloutis, E. A. Fuel, 2003, 82, (18), 2239–2254

• Book ID: 104279517
• Publisher: Elsevier Science
• Year: 2004
• Weight: 176 KB
• Volume: 45
• Category: Article
• ISSN: 0140-6701
• DOI: 10.1016/s0140-6701(04)94312-3

✦ Synopsis

01 Solid fuels (sources, winning, properties) Contents of preserved lignin structures in Miocene-aged lignite lithotypes were determined. Phenol aldehydes, ketones and acids released from lignin by CuO oxidative hydrolysis were separated by capillary zone electrophoresis (CZE). Products of degradation were separated and identified by GC-MS to confirm CZE data and to complement composition data. The following values for the contents of preserved lignin structures in lignite lithotypes were determined (in wt%): xylain, 8.5; humovitrain, 6.7; liptain, 6.4; and humoclarain, 3.3. Some fatty acids, negligible contents of benzene polycarboxylic acids and their hydroxy/methoxy counterparts were also observed using GC-MS.