Surface structures of vanadium oxide supported on aluminas characterized by ultraviolet and visible raman spectroscopy

Zili Wu, Hack Sung Kim, Sreekala Rugmini, S. David Jackson, Peter C Stair

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Supported vanadia catalyst have attracted significant interest due to their good catalytic performance in many redox reactions, e.g., dehydrogenation and oxidative dehydrogenation of alkanes to olefins, oxidation of methanol to formaldehyde, and selective reduction of NOx. The structure of VOx supported on alumina (δ-, α-, and γ-Al2O3) was studied using different techniques. UV Raman spectra of hydrated V-δ-Al2O3 were similar to the visible spectra. Comparing the UV and visible Raman spectra of V/δ-Al2O3 samples, two kinds of V=O band shift could be distinguished: a shift as a function of excitation wavelength for the same sample and a shift as a function of surface VOx density for different samples. The Raman, UV-visible DRS, and H2-TPR results showed that the structure, distribution, and reducibility of surface VOx species on γ-Al2O3 are similar to those on δ-Al2O3. This is an abstract of a paper presented at the ACS Fuel Chemistry Meeting (San Diego, CA Spring 2005).

Original languageEnglish
Title of host publicationACS Division of Fuel Chemistry, Preprints
Pages181-182
Number of pages2
Volume50
Edition1
Publication statusPublished - 2005

Fingerprint

Dehydrogenation
Surface structure
Vanadium
Raman spectroscopy
Raman scattering
Alumina
Oxides
Redox reactions
Catalyst supports
Formaldehyde
Paraffins
Olefins
Methanol
Wavelength
Oxidation

ASJC Scopus subject areas

  • Energy(all)

Cite this

Wu, Z., Kim, H. S., Rugmini, S., Jackson, S. D., & Stair, P. C. (2005). Surface structures of vanadium oxide supported on aluminas characterized by ultraviolet and visible raman spectroscopy. In ACS Division of Fuel Chemistry, Preprints (1 ed., Vol. 50, pp. 181-182)

Surface structures of vanadium oxide supported on aluminas characterized by ultraviolet and visible raman spectroscopy. / Wu, Zili; Kim, Hack Sung; Rugmini, Sreekala; Jackson, S. David; Stair, Peter C.

ACS Division of Fuel Chemistry, Preprints. Vol. 50 1. ed. 2005. p. 181-182.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wu, Z, Kim, HS, Rugmini, S, Jackson, SD & Stair, PC 2005, Surface structures of vanadium oxide supported on aluminas characterized by ultraviolet and visible raman spectroscopy. in ACS Division of Fuel Chemistry, Preprints. 1 edn, vol. 50, pp. 181-182.
Wu Z, Kim HS, Rugmini S, Jackson SD, Stair PC. Surface structures of vanadium oxide supported on aluminas characterized by ultraviolet and visible raman spectroscopy. In ACS Division of Fuel Chemistry, Preprints. 1 ed. Vol. 50. 2005. p. 181-182
Wu, Zili ; Kim, Hack Sung ; Rugmini, Sreekala ; Jackson, S. David ; Stair, Peter C. / Surface structures of vanadium oxide supported on aluminas characterized by ultraviolet and visible raman spectroscopy. ACS Division of Fuel Chemistry, Preprints. Vol. 50 1. ed. 2005. pp. 181-182
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