Multi-wavelength Raman spectroscopy study of supported vanadia catalysts: Structure identification and quantification
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Revealing the structure of supported metal oxide catalysts is a prerequisite for establishing the structure - catalysis relationship. Among a variety of characterization techniques, multi-wavelength Raman spectroscopy, combining resonance Raman and non-resonance Raman with different excitation wavelengths, has recently emerged as a particularly powerful tool in not only identifying but also quantifying the structure of supported metal oxide clusters. In our review, we make use of two supported vanadia systems, VOx/SiO2 and VOx/CeO2, as examples to showcase how one can employ this technique to investigate the heterogeneous structure of active oxide clusters and to understand the complex interaction between the oxide clusters and the support. Moreover, the qualitative and quantitative structural information gained from the multi-wavelength Raman spectroscopy can be utilized to provide fundamental insights for designing more efficient supported metal oxide catalysts.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1185437
- Journal Information:
- Chinese Journal of Catalysis, Vol. 35, Issue 10; ISSN 1872-2067
- Country of Publication:
- United States
- Language:
- English
Web of Science
Similar Records
Oxidative dehydrogenation of isobutane over vanadia catalysts supported by titania nanoshapes
Vanadium oxide monolayer catalysts. III. A Raman spectroscopic and temperature-programmed reduction study of monolayer and crystal-type vanadia on various supports