Promoting effect of vanadium on CF2Cl2 destructive sorption over nanocrystalline mesoporous MgO

Ekaterina V. Ilyina, Ilya V. Mishakov, Aleksey A. Vedyagin, Alexander F. Bedilo, Kenneth J. Klabunde

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The effect of vanadium present in nanocrystalline mesoporous VO x-MgO aerogels on the destructive sorption of difluorodichloromethane was studied using tapered element oscillating microbalance (TEOM), synchronous thermal analyzer (STA) and mass-spectrometric analysis of the gas phase. Vanadium incorporation in the aerogels was found to increase the MgO conversion to MgF2 and shorten the induction period of the solid-state reaction. The mechanisms of the CF2Cl2 reaction with pure and vanadium-modified nanocrystalline MgO aerogels based on the obtained data are analyzed. The obtained results suggest that the formation of nuclei related to the surface active sites is the rate-determining stage of the solid-state reaction.

Original languageEnglish
Pages (from-to)76-84
Number of pages9
JournalMicroporous and Mesoporous Materials
Volume175
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Aerogel
  • Destructive sorption
  • Induction period
  • Mesoporous VO/MgO
  • Solid-state reaction

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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