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Excess Adsorption Isotherms of Hydrogen on Activated Carbons from Agricultural Waste Materials.

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    0474403 - ÚCHP 2018 RIV DE eng J - Článek v odborném periodiku
    Soukup, Karel - Hejtmánek, Vladimír - Cruz, G.J.F. - Jandová, Věra - Šolcová, Olga
    Excess Adsorption Isotherms of Hydrogen on Activated Carbons from Agricultural Waste Materials.
    Chemical Engineering & Technology. Roč. 40, č. 5 (2017), s. 900-906. ISSN 0930-7516.
    [International Congress of Chemical and Process Engineering CHISA 2016 and the 19th Conference PRES 2016 /22./. Prague, 27.08.2016-31.08.2016]
    Grant CEP: GA ČR GA15-14228S
    Grant ostatní:NUT(PE) 0722-2014/UNT-R
    Institucionální podpora: RVO:67985858
    Klíčová slova: activated carbon * hydrogen * excess adsorption
    Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
    Obor OECD: Chemical process engineering
    Impakt faktor: 1.588, rok: 2017

    Four activated carbons based on red mombin seeds, cocoa pod husk, the external part of mango pits and coffee husk were prepared by chemical activation using zinc chloride. Adsorption isotherms of hydrogen measured by volumetric method under supercritical conditions corresponding to the three temperature levels (77 K, 273 K and 298 K) and the pressure range of 0–1000 kPa were determined. The dependence of the hydrogen adsorbed amount on equilibrium pressure was linear for all adsorption isotherms measured at 273 and 298 K. Corresponding excess adsorption experimental data were fitted by Henry’s adsorption isotherm with excellent goodness of fit. Moreover, Dubinin-Radushkevich adsorption isotherm was demonstrated to fit the excess adsorption data at 77 K with high accuracy.
    Trvalý link: http://hdl.handle.net/11104/0271467
     
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