Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2504
Title: Spectroscopic analysis of Au-V-based catalysts and their activity in the catalytic removal of diesel soot particulates
Authors: Van Craenenbroeck, J
Andreeva, D.
Tabakova, T
VAN WERDE, Kristof 
MULLENS, Jules 
Verpoort, F
Issue Date: 2002
Publisher: ACADEMIC PRESS INC ELSEVIER SCIENCE
Source: JOURNAL OF CATALYSIS, 209(2). p. 515-527
Abstract: Diesel soot oxidation over Au-VOx/TiO2 and Au-VOx/ZrO2 catalytic systems with different vanadia loadings were studied. The heavy-duty diesel soot was preliminarily analyzed. The composition of the catalysts was investigated by means of FT-Raman. Their activity toward the oxidation of diesel soot was assessed by thermogravimetrical analysis. The combustion onset temperature and the combustion peak maximum can be lowered to 361 and 419degreesC, respectively. Reaction rates R at certain temperature T-r are calculated out of the first derivative from the mass loss in function of temperature (TGA plot). The results of the activity tests indicate a synergistic effect between Au nanoparticles and vanadia when VOx presents as a monolayer on the support. Catalysts with higher V loadings show a higher activity but no synergistic effects between Au and V could be observed. (C) 2002 Elsevier Science (USA).
Notes: State Univ Ghent, Dept Phys & Inorgan Chem, B-9000 Ghent, Belgium. Bulgarian Acad Sci, Inst Catalysis, BU-1113 Sofia, Bulgaria. Limburgs Univ Ctr, Lab Inorgan & Phys Chem, Diepenbeek, Belgium.Verpoort, F, State Univ Ghent, Dept Phys & Inorgan Chem, Krijgslaan 281 S3, B-9000 Ghent, Belgium.
Keywords: soot oxidation; gold nanoparticles; Raman; TGA-MS; heterogeneous catalysis
Document URI: http://hdl.handle.net/1942/2504
ISSN: 0021-9517
e-ISSN: 1090-2694
DOI: 10.1006/jcat.2002.3649
ISI #: 000176916300023
Category: A1
Type: Journal Contribution
Validations: ecoom 2003
Appears in Collections:Research publications

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