Publication 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

Type

journal article - other

Language

English

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.

Keywords

Ruthenium tetroxide oxidation; Thermochemolysis; Humic acids; Lignite

Authors

VÁLKOVÁ, D.; GRASSET, L.; AMBLÉS, A.

RIV year

2009

Released

2. 10. 2009

Publisher

Elsevier

ISBN

0016-2361

Periodical

FUEL

Year of study

Number

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2113

Pages to

2121

Pages count

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"
}