Počet záznamů: 1
Effect of bituminous coal properties on carbon dioxide and methane high pressure sorption
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SYSNO ASEP 0444956 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of bituminous coal properties on carbon dioxide and methane high pressure sorption Tvůrce(i) Weishauptová, Zuzana (USMH-B) RID, ORCID
Přibyl, Oldřich (USMH-B) RID
Sýkorová, Ivana (USMH-B) RID, ORCID
Machovič, Vladimír (USMH-B)Zdroj.dok. Fuel. - : Elsevier - ISSN 0016-2361
Roč. 139, JAN 1 (2015), s. 115-124Poč.str. 10 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova bituminous coal ; sorption capacity ; maceral composition ; Upper Silesian Coal Basin Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Institucionální podpora USMH-B - RVO:67985891 UT WOS 000345434700017 EID SCOPUS 84907212352 DOI https://doi.org/10.1016/j.fuel.2014.08.030 Anotace High pressure sorption experiments with carbon dioxide and methane were carried out at a temperature of 45 °C and at pressures up to 15 MPa with three samples of methane-bearing, medium-rank coals in a moisture-equilibrated state using a manometric method. The samples were taken from selected positions of drill cores from exploration boreholes in the Bohemian part of the Upper Silesian Basin, and were characterized by a narrow range of degree of coalification and markedly different petrographic compositions, including a different mineral matter content. The total porosity of the coal samples was between 9% and 10%. A positive correlation was found between the equilibrium moisture in the coal samples and the total abundance of oxygen functional groups determined by FTIR. The excess sorption capacities ranged from 0.78 to 0.91 mmol g−1 for CO2 and from 0.45 to 0.52 mmol g−1 for CH4, and after recalculation to coal organic matter, the excess sorption capacities increased by up to 14% in the coal with the highest mineral fraction. The highest CO2/CH4 ratio was found in the sample that had the highest inertinite and liptinite content. The experimental isotherm data was fitted by modified Langmuir and Dubinin–Radushkevich sorption isotherms. The parameters obtained by these two methods were in good agreement for carbon dioxide. It was found that the sorption capacity of the organic matter in a coal sample with prevalence of inertinite (63.0 vol.%) was lower only by 14% for CO2 and by 18% for CH4 than the sorption capacity of the organic matter in a coal sample with prevalence of vitrinite (65.3 vol.%). This provided confirmation that the petrographic composition of a coal has an ambiguous effect. Pracoviště Ústav struktury a mechaniky hornin Kontakt Iva Švihálková, svihalkova@irsm.cas.cz, Tel.: 266 009 216 Rok sběru 2016
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