Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7920331 | Journal of Physics and Chemistry of Solids | 2018 | 31 Pages |
Abstract
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 an 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]â¯>â¯2, with high stability and control over the processing route.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Debora Marani, Rafael Hubert Silva, Apiwat Dankeaw, Mads Gudik-Sørensen, Kion Norrman, Kent Kammer Hansen, Vincenzo Esposito,