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Modified BET Equation for Determination of Micropore Pore Volume and Mesopore Surface Area in Microporous-Mesoporous Solids
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SYSNO ASEP 0356436 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Modified BET Equation for Determination of Micropore Pore Volume and Mesopore Surface Area in Microporous-Mesoporous Solids Author(s) Šolcová, Olga (UCHP-M) RID, ORCID, SAI
Matějová, Lenka (UCHP-M) RID, ORCID, SAI
Hudec, P. (CZ)
Schneider, Petr (UCHP-M) RIDSource Title Characterisation of Porous Solids VIII. - Cambridge : Royal Society of Chemistry Publishing, 2009 / Kaskel S. ; Llewellyn P. ; Rodriguez-Reinoso F. ; Seaton N.A. - ISSN 0260-6291 - ISBN 978-1-84755-904-3 Pages s. 218-224 Number of pages 7 s. Action International Symposium on the Characterization of Porous Solids /8./ Event date 10.06.2008-13.06.2008 VEvent location Edinburg Country GB - United Kingdom Event type WRD Language eng - English Country GB - United Kingdom Keywords microporous-mesoporous solids ; mesopore surface area ; BET equation Subject RIV CA - Inorganic Chemistry R&D Projects IAA4072404 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KAN400720701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000269656900029 Annotation 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 Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2011
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