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 language | English |
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Pages (from-to) | 76-84 |
Number of pages | 9 |
Journal | Microporous and Mesoporous Materials |
Volume | 175 |
DOIs | |
Publication status | Published - 2013 |
Externally published | Yes |
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