Počet záznamů: 1

Adsorption of Carbon Dioxide on High-Silica Zeolites with Different Framework Topology

  1. 1.
    0356988 - UFCH-W 2011 RIV NL eng J - Článek v odborném periodiku
    Zukal, Arnošt - Mayerová, Jana - Kubů, Martin
    Adsorption of Carbon Dioxide on High-Silica Zeolites with Different Framework Topology.
    Topics in Catalysis. Roč. 53, 19-20 (2010), s. 1361-1366 ISSN 1022-5528
    Grant CEP: GA ČR GA203/08/0604; GA ČR GD203/08/H032
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: TNU-9 * IM-5 * SSZ-74
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 2.359, rok: 2010

    Adsorption isotherms of carbon dioxide were measured on six high-silica zeolites TNU-9, IM-5, SSZ-74, ferrierite, ZSM-5 and ZSM-11 comprising three-dimensional 10-ring (8-ring for ferrierite) at 273, 293, 313 and 333 K. Based on the known temperature dependence of CO2 adsorption, isosteric heats of adsorption were calculated. The obtained adsorption capacities and isosteric adsorption heats related to the amount of CO2 adsorbed have provided detailed insight into the carbon dioxide interaction with zeolites of different framework topology. The zeolites TNU-9 and ferrierite are characterized by pronounced energetic heterogeneity whereas due to the location of Na+ cations in the same positions the isosteric adsorption heats of CO2 adsorption on IM-5, ZSM-5 and ZSM-11 zeolites are rather constant for molecular ratio CO2/Na+ < 1. As IM-5 zeolite has a maximum adsorption capacity, it appears to have optimum properties for carbon dioxide separation.
    Trvalý link: http://hdl.handle.net/11104/0195366