Počet záznamů: 1

Adsorption of CO2 on Sodium-Exchanged Ferrierites: The Bridged CO2 Complexes Formed between Two Extraframework Cations

  1. 1.
    0331256 - UOCHB-X 2010 RIV US eng J - Článek v odborném periodiku
    Pulido, Maria Angeles - Nachtigall, Petr - Pérez-Dominguez, Irene - Zukal, Arnošt - Čejka, Jiří
    Adsorption of CO2 on Sodium-Exchanged Ferrierites: The Bridged CO2 Complexes Formed between Two Extraframework Cations.
    Journal of Physical Chemistry C. Roč. 113, č. 7 (2009), s. 2928-2935 ISSN 1932-7447
    Grant CEP: GA ČR GA203/06/0324; GA MŠk LC512; GA ČR GA203/08/0604
    Výzkumný záměr: CEZ:AV0Z40550506; CEZ:AV0Z40400503
    Klíčová slova: zeolites * CO2 capture * adsorption
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 4.224, rok: 2009

    Isosteric heats of adsorption of CO2 on Na-FER with different Si/Al ratios were obtained from the adsorption isotherms. Large isosteric heats of adsorption were obtained for Na-FER when Si/Al = 8.7. Based on calculations employing the periodic DFT model, these large isosteric heats are attributed to the formation of the linearly bridged CO2 adsorption complexes formed between a pair of Na+ cations located in cationic positions. The CO2 adsorption complexes formed on such dual cation sites are ca 10 kJ/mol more stable than the CO2 adsorption complexes where CO2 interacts only with a single Na cation.
    Trvalý link: http://hdl.handle.net/11104/0176823