Journal article
Effect of the sol-gel conditions on the morphology and SCR performance of electrospun V-W-TiO2 catalysts
Department of Energy Conversion and Storage, Technical University of Denmark1
Ceramic Engineering & Science, Department of Energy Conversion and Storage, Technical University of Denmark2
Technical University of Denmark3
Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark4
V-W-TiO2 catalysts are prepared as nanofibers for the removal of the NOx in exhausts via the NH3 Selective Catalytic Reduction (SCR) method. By combining electrospinning and soft chemistry, materials are processed as nanofibers with the catalytic components (e. g. V2O5-WO3) incorporated as dopants into the supporting anatase phase (e. g TiO2).
The conditions for the chemical synthesis were investigated by varying the molar ratios between titanium alkoxide (tetraisopropoxide) and the chelating agent (acetic acid). Catalytic characterization clearly shows a impact of the starting precursor coordination on the final nanostructure, and thus on the catalytic performances.
Superior NOx conversion are obtained for nanofibers formed by high coordination level, i.e. [Acetic acid]/[Ti cation] > 2, with high stability and control over the processing route.
Language: | English |
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Year: | 2018 |
Pages: | 255-261 |
ISSN: | 18792553 and 00223697 |
Types: | Journal article |
DOI: | 10.1016/j.jpcs.2018.03.018 |
ORCIDs: | Marani, Debora , Dankeaw, Apiwat , Gudik-Sørensen, Mads , Norrman, Kion and Esposito, Vincenzo |