Thermoanalytical characterization of vanadium-chromium oxide compounds prepared by 'soft chemistry' method

O. Pozdnyakova, J. Megyeri, E. Kuzmann, L. Szirtes

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Hydrated microcrystalline compound, V1-xCrxO y • nH2O, where x4 •H2O and Cr 2V4O13 •4H2O have been prepared using peroxo-polyacids of vanadium and chromium. The transformations of these hydrated phases upon heating were studied by TG-DTA and XRD techniques and led to three crystalline anhydrous compounds: (i) phase V1-xCr xOy, which is closely related to the orthorhombic V 2O5, (ii) Cr2V4O13 and (iii) monoclinic CrVO4-M. The ranges of coexistence of phases in equilibrium were also determined.

Original languageEnglish
Pages (from-to)409-415
Number of pages7
JournalJournal of Thermal Analysis and Calorimetry
Volume82
Issue number2
DOIs
Publication statusPublished - Nov 2005

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chromium oxides
Vanadium
vanadium oxides
Chromium
Differential thermal analysis
vanadium
chromium
thermal analysis
chemistry
Crystalline materials
Heating
heating
Oxides
chromium oxide

Keywords

  • Chromium
  • Sol-gel
  • Thermal analysis
  • Vanadium

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Thermoanalytical characterization of vanadium-chromium oxide compounds prepared by 'soft chemistry' method. / Pozdnyakova, O.; Megyeri, J.; Kuzmann, E.; Szirtes, L.

In: Journal of Thermal Analysis and Calorimetry, Vol. 82, No. 2, 11.2005, p. 409-415.

Research output: Contribution to journalArticle

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