Thermoanalytical studies of titanium(IV) acetylacetonate xerogels with emphasis on evolved gas analysis

I. Oja Açik, J. Madarász, M. Krunks, K. Tõnsuaadu, D. Janke, G. Pokol, L. Niinistö

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Thermal decomposition of precursor xerogels for TiO2, obtained by gelling of acetylacetonate-modified titanium(IV) tetraisopropoxide (prepared at Ti-alkoxide:acetylacetone molar ratios of 1:1 (Ti-1) and 1:2 (Ti-2)) in boiling 2-methoxyethanol, was monitored by simultaneous TG/DTA/EGA-MS and EGA-FTIR measurements. Thermal degradation processes of Ti-1 and Ti-2 in the temperature range of 30-700°C consist of six mass loss steps, the total mass loss being 46.3% and 54.4%, respectively. EGA by FTIR and MS revealed release of H2O below 120°C; followed by evolution of acetone and acetic acid between approximately 100 and 320°C, and that of CO2 up to 560°C. Acetylacetone is evolved to a significant extent from sample Ti-2 at 120-200°C.

Original languageEnglish
Pages (from-to)557-563
Number of pages7
JournalJournal of Thermal Analysis and Calorimetry
Volume88
Issue number2
DOIs
Publication statusPublished - May 2007

Fingerprint

acetylacetone
Xerogels
Gas fuel analysis
gas analysis
xerogels
Titanium
Pyrolysis
titanium
thermal degradation
alkoxides
Acetone
acetic acid
Acetic acid
Acetic Acid
boiling
Differential thermal analysis
Boiling liquids
acetone
thermal decomposition
thermal analysis

Keywords

  • EGA-FTIR
  • EGA-MS
  • Simultaneous TG/DTA
  • Sol-gel
  • Titania
  • Titania-xerogels

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Thermoanalytical studies of titanium(IV) acetylacetonate xerogels with emphasis on evolved gas analysis. / Oja Açik, I.; Madarász, J.; Krunks, M.; Tõnsuaadu, K.; Janke, D.; Pokol, G.; Niinistö, L.

In: Journal of Thermal Analysis and Calorimetry, Vol. 88, No. 2, 05.2007, p. 557-563.

Research output: Contribution to journalArticle

Oja Açik, I. ; Madarász, J. ; Krunks, M. ; Tõnsuaadu, K. ; Janke, D. ; Pokol, G. ; Niinistö, L. / Thermoanalytical studies of titanium(IV) acetylacetonate xerogels with emphasis on evolved gas analysis. In: Journal of Thermal Analysis and Calorimetry. 2007 ; Vol. 88, No. 2. pp. 557-563.
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AU - Madarász, J.

AU - Krunks, M.

AU - Tõnsuaadu, K.

AU - Janke, D.

AU - Pokol, G.

AU - Niinistö, L.

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