Publication result detail
Molecular compounds generated by ruthenium tetraxide oxidation and preparative off line thermochemolysis of lignite humic acids from South Motravia: Implications for molecular structure
VÁLKOVÁ, D.; GRASSET, L.; AMBLÉS, A.
Original Title
Molecular compounds generated by ruthenium tetraxide oxidation and preparative off line thermochemolysis of lignite humic acids from South Motravia: Implications for molecular structure
English Title
Molecular compounds generated by ruthenium tetraxide oxidation and preparative off line thermochemolysis of lignite humic acids from South Motravia: Implications for molecular structure
Type
Peer-reviewed article not indexed in WoS or Scopus
Original Abstract
The composition of humic acids (HAs) isolated from a South Moravian lignite deposit was examined via thermochemolysis and RuO4 oxidation. The combination of thermochemolysis with TMAH and TEAAC shows that fatty acids were mostly in a free form, tightly trapped within the humic acid organic network. Humic acids contain also trapped hydrocarbons. The relative distributions of these compounds confirm their higher plant origin. RuO4 oxidation resulted in a lipophilic fraction containing mainly fatty acids. The hydrophilic fractions released upon RuO4 oxidation comprised mostly aliphatic C-2-C-9 dicarboxylic acids and hydroxy acids related to short methylene bridges, to bridges between aromatic and/or oxygenated moieties such as aliphatic chains of ligneous units.
English abstract
The composition of humic acids (HAs) isolated from a South Moravian lignite deposit was examined via thermochemolysis and RuO4 oxidation. The combination of thermochemolysis with TMAH and TEAAC shows that fatty acids were mostly in a free form, tightly trapped within the humic acid organic network. Humic acids contain also trapped hydrocarbons. The relative distributions of these compounds confirm their higher plant origin. RuO4 oxidation resulted in a lipophilic fraction containing mainly fatty acids. The hydrophilic fractions released upon RuO4 oxidation comprised mostly aliphatic C-2-C-9 dicarboxylic acids and hydroxy acids related to short methylene bridges, to bridges between aromatic and/or oxygenated moieties such as aliphatic chains of ligneous units.
Keywords
Ruthenium tetroxide oxidation; Thermochemolysis; Humic acids; Lignite
Key words in English
Ruthenium tetroxide oxidation; Thermochemolysis; Humic acids; Lignite
Authors
VÁLKOVÁ, D.; GRASSET, L.; AMBLÉS, A.
RIV year
2010
Released
02.10.2009
Publisher
Elsevier
ISBN
0016-2361
Periodical
Fuel
Volume
88
Number
11
State
United Kingdom of Great Britain and Northern Ireland
Pages from
2113
Pages to
2121
Pages count
8
BibTex
@article{BUT49042,
author="Dana {Švejdová} and Laurent {Grasset} and André {Amblés}",
title="Molecular compounds generated by ruthenium tetraxide oxidation and preparative off line thermochemolysis of lignite humic acids from South Motravia: Implications for molecular structure",
journal="Fuel",
year="2009",
volume="88",
number="11",
pages="2113--2121",
issn="0016-2361"
}