Detail publikace

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.

Originální název

Molecular compounds generated by ruthenium tetraxide oxidation and preparative off line thermochemolysis of lignite humic acids from South Motravia: Implications for molecular structure

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Ruthenium tetroxide oxidation; Thermochemolysis; Humic acids; Lignite

Autoři

VÁLKOVÁ, D.; GRASSET, L.; AMBLÉS, A.

Rok RIV

2009

Vydáno

2. 10. 2009

Nakladatel

Elsevier

ISSN

0016-2361

Periodikum

FUEL

Ročník

88

Číslo

11

Stát

Spojené království Velké Británie a Severního Irska

Strany od

2113

Strany do

2121

Strany počet

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"
}