Determining the surface acidic properties of solid catalysts by amine titration using Hammett indicators and FTIR-pyridine adsorption methods

Surface acidity of solids (ZSM‐5 zeolites, Y zeolite, mordenite and Ca‐bentonite) were investigated with Fourier transform infrared spectroscopy (FTIR) and Hammett acidity functions; the n‐butylamine titration method. In the amine titration method, acid strength of solids were found. The total acid...

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Bibliographic Details
Published inSurface and interface analysis Vol. 42; no. 6-7; pp. 959 - 962
Main Authors Yazici, D Topaloglu, Bilgic, C
Format Journal Article
LanguageEnglish
Published Chichester, UK John Wiley & Sons, Ltd 01.06.2010
Subjects
Adsorption
Amines
bentonite
Drift
Fourier transforms
FTIR
modified Hammett method
Pyridines
surface acidity
Surface chemistry
Titration
zeolite
Zeolites
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Summary:Surface acidity of solids (ZSM‐5 zeolites, Y zeolite, mordenite and Ca‐bentonite) were investigated with Fourier transform infrared spectroscopy (FTIR) and Hammett acidity functions; the n‐butylamine titration method. In the amine titration method, acid strength of solids were found. The total acid amount of Y zeolite has the highest value among all others. The IR spectrums of all samples were recorded using diffuse reflectance infrared Fourier transform (DRIFT) technique. Pyridine adsorption and desorption processes have given some clues about the surface acidity of solids. Copyright © 2010 John Wiley & Sons, Ltd.
Bibliography:Paper published as part of the ECASIA 2009 special issue.
istex:130900B369AF254EFE8825A86488F327A1DEAEF6
Research Fund of Eskişehir Osmangazi University
ark:/67375/WNG-NWQFKKHL-6
ArticleID:SIA3474
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0142-2421
1096-9918
1096-9918
DOI:10.1002/sia.3474