Detail publikace

The characterization of South Moravian lignite in its natural and treated forms using thermal degradation methods.

DOSKOČIL, L. ENEV, V. GRASSET, L. WASSERBAUER, J.

Originální název

The characterization of South Moravian lignite in its natural and treated forms using thermal degradation methods.

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Thermal degradation experiments were performed on South Moravian lignite in its natural and treated forms primarily to investigate the changes taking place during pyrolysis, and, secondarily, to determine the structural characteristics of lignite using thermal degradation methods The lignite was treated by extraction with chloroform, demineralization, and the remineralization or sorption of calcium ions on the demineralized lignite. The analysis of pyrolysis products was performed in solid and gaseous states using FTIR analysis and the thermogravimetric technique coupled with FTIR (TG-FTIR). Experiments were complemented by thermochemolysis with tetramethylammonium hydroxide (TMAH). South Moravian lignite was characterized by the bimodal distribution of saturated fatty acids, with two maxima at n-C16 and at n-C28, and the dominance of guaiacyl units indicating a gymnosperm origin. FTIR analysis of the examined sample set showed that lignite contains different functional groups with various thermal stabilities degrading to the evolution of gases such as H2O, CO, CO2 and CH4. Precursors of the gaseous products generated and an analysis of functional groups in the samples are discussed in the paper. The results show that treatments of lignite may be reflected in their thermal behaviors during pyrolysis.

Klíčová slova

Lignite pyrolysis, Thermochemolysis, Thermal analysis, FTIR analysis, TG-FTIR

Autoři

DOSKOČIL, L.; ENEV, V.; GRASSET, L.; WASSERBAUER, J.

Vydáno

31. 10. 2017

ISSN

0165-2370

Periodikum

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

Ročník

128

Číslo

11

Stát

Nizozemsko

Strany od

83

Strany do

91

Strany počet

9

BibTex

@article{BUT141401,
  author="Leoš {Doskočil} and Vojtěch {Enev} and Laurent {Grasset} and Jaromír {Wasserbauer}",
  title="The characterization of South Moravian lignite in its natural and treated forms using thermal degradation methods.",
  journal="JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS",
  year="2017",
  volume="128",
  number="11",
  pages="83--91",
  doi="10.1016/j.jaap.2017.10.022",
  issn="0165-2370"
}