XAFS Study of Active Tungsten Species on WO3/TiO2 as a Catalyst for Photo-SCR

Journal Article · Fri Feb 02 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2644636· OSTI ID:21054722

Yamazoe, Seiji; Masutani, Yasuyuki; Shishido, Tetsuya; Tanaka, Tsunehiro ^[1]

---

1. Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 (Japan)

The activity of the photo-assisted selective catalytic reduction of NO with NH3 (photo-SCR) was enhanced by the addition of WO3 to TiO2. From the result of XAFS analysis, the W species on TiO2 had a WO4 tetrahedral structure and agglutination took place as the addition of WO3 was increased. We conclude that the isolated W species enhances the surface acidity and photo-SCR activity whereas the agglutinated W species is an inactive species.

• OSTI ID: 21054722
• Journal Information: AIP Conference Proceedings, Vol. 882, Issue 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644636; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
AIR POLLUTION CONTROL
AMMONIA
ANTIGEN-ANTIBODY REACTIONS
CATALYSTS
CRYSTAL STRUCTURE
FINE STRUCTURE
INTERFACES
NITRIC OXIDE
SELECTIVE CATALYTIC REDUCTION
SURFACES
TITANIUM OXIDES
TUNGSTEN
TUNGSTEN OXIDES
X-RAY SPECTRA
X-RAY SPECTROSCOPY