Record details

    Structural study of Ostrava-Karviná bituminous coals
Statement of responsibility
    Pavel Straka, Jaroslav Buchtele
    Buchtele, Jaroslav
    Straka, Pavel
Source title - monograph
    Institute of Rock Structure and Mechanics - Academy of Sciences of the Czech Republic
    s. 191-194
    2 tab., 5 s.bibl.
    Anglické resumé
Subject group
    hornoslezská pánev
    molekulární stavba
    studie experimentální
    uhlí bituminózní
Geographical name
Abstract (in english)
   Important structural features of three hard coals of Ostrava-Karviná coal basin and their maceral fractional were studied. From results of solid-state NMR aromaticity and the fraction of aromatic bridgehead/inner carbon was determined. On these basis was estimated that the cluster size ranged between 3-5 rings per cluster. In coal fractions, 32-48% of oxygen was in aryl hydroxy compounds, only a small amounts in carbonyl groups and the rest was found as ethers and furans. Therefore, hydroxy and etheric forms dominated. In additional, the molecular component/mobile phase of coals was investigated by supercritical fluid chromotography with carbon dioxide. It was found that alkanes C10-C24 are present in the mobile low-molecular phase
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    4. 2. 2008
Import date
    8. 8. 2012