Correct Determination of Textural Properties in Microporous-Mesoporous Solids

0346369 - ÚCHP 2011 MU eng C - Konferenční příspěvek (zahraniční konf.)
Šolcová, Olga - Šnajdaufová, Hana - Matějová, Lenka
Correct Determination of Textural Properties in Microporous-Mesoporous Solids.
Book of Abstracts. 2010, s. 26. ISBN N.
[International Conference on Pure and Applied Chemistry (ICPAC-2010). Mauritius (MU), 26.07.2010-30.07.2010]
Grant CEP: GA AV ČR KAN400720701; GA ČR GA104/09/0694
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: texture * micro-mesoporous solids * physisorption
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie

Textural analysis of microporous-mesoporous samples is usually based on the analysis of physical adsorption of inert gases (e.g. nitrogen or krypton at 77K or argon at 87K). Besides for determination of the sample porosity two classic methods, mercury porozimetry together with helium pycnometry, are applied. The simultaneous presence of micropores and mesopores makes the textural analysis based on transformation of physical adsorption isotherms of inert gases much less straightforward than in case of porous solids with mesopores only. Similarly, the presence of micropores can cause a lapse in the mercury porozimetry data evaluation and can result in failure of the porosity determination.
Trvalý link: http://hdl.handle.net/11104/0187415