Vanadia Gel Synthesis via Peroxovanadate Precursors. 1. In Situ Laser Raman and 51V NMR Characterization of the Gelation Process

Craig J. Fontenot, Jerzy W. Wiench, M. Pruski, Glenn L Schrader

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96 Citations (Scopus)

Abstract

Vanadium oxide gels derived from aqueous solutions of V2O5 and H2O2 have been investigated using in situ 51V NMR and laser Raman spectroscopic techniques. On the basis of this characterization, a pathway for peroxovanadate decomposition has been proposed, including the presence of two peroxovanadate dimers. New Raman bands and assignments for these species are reported. Gelation was observed to begin both during and after the peroxovanadate decomposition, depending on the initial molar ratios of H2O2/V and the total concentration of vanadium. Experimental 51V NMR evidence suggested that the VO2+ species was directly involved in the formation of the gel.

Original languageEnglish (US)
Pages (from-to)11622-11631
Number of pages10
JournalJournal of Physical Chemistry B
Volume104
Issue number49
StatePublished - Dec 14 2000
Externally publishedYes

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Raman lasers
gelation
Gelation
Vanadium
Gels
Nuclear magnetic resonance
gels
Decomposition
decomposition
nuclear magnetic resonance
vanadium oxides
Lasers
synthesis
Dimers
vanadium
dimers
aqueous solutions
Oxides
peroxovanadate

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Vanadia Gel Synthesis via Peroxovanadate Precursors. 1. In Situ Laser Raman and 51V NMR Characterization of the Gelation Process. / Fontenot, Craig J.; Wiench, Jerzy W.; Pruski, M.; Schrader, Glenn L.

In: Journal of Physical Chemistry B, Vol. 104, No. 49, 14.12.2000, p. 11622-11631.

Research output: Contribution to journalArticle

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AU - Schrader, Glenn L

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