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dc.contributor.authorPomonis, P. J.en
dc.contributor.authorPetrakis, D. E.en
dc.contributor.authorLadavos, A. K.en
dc.contributor.authorKolonia, K. M.en
dc.contributor.authorPantazis, C. C.en
dc.contributor.authorGiannakas, A. E.en
dc.contributor.authorLeontiou, A. A.en
dc.rightsDefault Licence-
dc.subjectsurface areaen
dc.subjectbet equationen
dc.subjectbet-scatchard plotsen
dc.subjecti-point methoden
dc.titleThe I-point method for estimating the surface area of solid catalysts and the variation of C-term of the BET equationen
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.catcom.2004.11.006-
heal.identifier.secondary<Go to ISI>://000226479000018-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.abstractThe BET equation rearranged in the form [V(1 - P)]/P = CVm - (C - 1)[V(1 - P)] was used for the calculation of specific surface areas of porous catalysts and the variation of C-term during the progress of adsorption. This novel method employs plots of [ V(1 - P)]/P vs. [V(1 - P)] which provide inclined-V type lines with an inversion point termed I-point. This I-point corresponds exactly to V(1 - P) = V-m, i.e., the volume of nitrogen necessary for the formation of a monolayer. The slope of the plots corresponds to (C - 1) from which the values of C can be estimated in the whole range 0 < P < 1. As the I-point is approached, the C values approach the C-BET values calculated from the classical linear BET plots. The free energy of adsorption in the whole range 0 < P < 1 can be also estimated from the relationship RTln C. (C) 2004 Elsevier B.V. All rights reserved.en
heal.journalNameCatalysis Communicationsen
heal.journalTypepeer reviewed-
Appears in Collections:Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

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