Počet záznamů: 1

Modified BET Equation for Determination of Micropore Pore Volume and Mesopore Surface Area in Microporous-Mesoporous Solids

  1. 1.
    0356436 - UCHP-M 2011 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
    Šolcová, Olga (ed.) - Matějová, Lenka (ed.) - Hudec, P. (ed.) - Schneider, Petr (ed.)
    Modified BET Equation for Determination of Micropore Pore Volume and Mesopore Surface Area in Microporous-Mesoporous Solids.
    Characterisation of Porous Solids VIII. Cambridge: Royal Society of Chemistry Publishing, 2009 - (Kaskel, S.; Llewellyn, P.; Rodriguez-Reinoso, F.; Seaton, N.), s. 218-224. ISBN 978-1-84755-904-3. ISSN 0260-6291.
    [International Symposium on the Characterization of Porous Solids /8./. Edinburg (GB), 10.06.2008-13.06.2008]
    Grant CEP: GA AV ČR IAA4072404; GA AV ČR KAN400720701
    Grant ostatní: GA VEGA(SK) 1/3575/06
    Výzkumný záměr: CEZ:AV0Z40720504
    Klíčová slova: microporous-mesoporous solids * mesopore surface area * BET equation
    Kód oboru RIV: CA - Anorganická chemie

    Evaluation of micropore volume and mesopore surface area in microporous-mesoporous samples is presented. A series of mechanical mixtures of microporous zeolite NaY, and mesoporous gama-alumina was used for verification of the applicability of the (three-parameter) modified BET equation. The nitrogen adsorption isotherms (77 K) were analyzed by the modified (three parameters) BET equation and compared with the independent textural information obtained a) from t-plots (with the standard isotherm of nonporous gama-alumina and the standard isotherms of Lecloux-Pirard) and b) by subtracting the isotherm of the parent NaY from mixed sample isotherms. Similarly, nitrogen adsorption isotherms of rutile samples with micropores blocked by n-nonane, from the literature were tested. For illustration, the failure of classic (two-parameter) BET equation for microporous-mesoporous samples is demonstrated
    Trvalý link: http://hdl.handle.net/11104/0194958