Title
Catalytic activity of rhodium grafted on ordered mesoporous silica materials modified with aluminum in <tex>$N_{2}O$</tex> decomposition Catalytic activity of rhodium grafted on ordered mesoporous silica materials modified with aluminum in <tex>$N_{2}O$</tex> decomposition
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Source (journal)
Catalysis today. - Amsterdam
Volume/pages
257(2015) :1 , p. 51-58
ISSN
0920-5861
ISI
000361249500008
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Three different ordered mesoporous silica materials, such as MCM-41, Al-containing MCM-41 (with 1.6 wt% of Al incorporated into the silica framework) and SBA-15, were prepared. Furthermore, aluminum (1.8 wt%) was grafted on the silica surface by the molecular designed dispersion method (MDD). In a next step, rhodium (1.4-2.9 wt%), as an active metal for the catalytic reaction of N2O decomposition, was introduced by the MDD technique. The following order of the catalytic activity was found under an inert atmosphere: Al(incorporated)-MCM-41 + Rh > MCM-41 + Al(grafted) + Rh > SBA-15 + Rh approximate to MCM-41 + Rh. The influence of textural properties, total acidity and rhodium dispersion on the activity of catalysts was studied. (C) 2015 Elsevier B.V. All rights reserved.
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