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Water–gas shift activity of doped Pt/CeO2 catalysts

Panagiotopoulou Paraskevi, Papavasiliou J., Avgouropoulos G., Ioannides T., Kondarides I. Dimitris

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URIhttp://purl.tuc.gr/dl/dias/AD6AEBAD-A009-4BFA-A799-FC5AF383081E-
Identifierhttps://doi.org/10.1016/j.cej.2007.03.054-
Languageen-
Extentpages 6en
TitleWater–gas shift activity of doped Pt/CeO2 catalystsen
CreatorPanagiotopoulou Paraskevien
CreatorΠαναγιωτοπουλου Παρασκευηel
CreatorPapavasiliou J.en
CreatorAvgouropoulos G.en
CreatorIoannides T.en
CreatorKondarides I. Dimitrisen
PublisherElsevieren
Content SummaryA series of platinum catalysts supported on cation (Me)-doped cerium oxide (Me = Ca, La, Mg, Zn, Zr, Yb, Y, Gd) have been prepared employing the urea-nitrate combustion method. The effects of Me-promotion on the physicochemical and chemisorptive properties of Pt/CeO2 catalysts and on their catalytic performance for the water–gas shift (WGS) reaction have been investigated. It has been found that the WGS activity of Pt/Ce-Me-O catalysts depends on the nature of the dopant employed, varying in the order of Yb > Gd > Zr > Mg > La > CeO2(undoped) > Ca > Y > Zn, with the Yb-promoted catalyst being about one order of magnitude more active than the Zn-promoted one, at 250 °C. Evidence is provided that promotion affects the reducibility and oxygen ion mobility of the CeO2 support, which in turn affects the WGS activity of dispersed platinum crystallites.en
Type of ItemΣύντομη Δημοσίευση σε Συνέδριοel
Type of ItemConference Short Paperen
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-11-14-
Date of Publication2006-
SubjectWater–gas shiften
Bibliographic CitationP. Panagiotopoulou, J. Papavasiliou, G. Avgouropoulos, T. Ioannides, D.I. Kondarides, “Water-gas shift activity of doped Pt/CeO2 catalysts”, in XVII International Conference on Chemical Reactors (CHEMREACTOR-17), pp. 16–22. doi:10.1016/j.cej.2007.03.054en

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