Titanium(IV) acetylacetonate xerogels for processing titania films

Thermal decomposition of dried crystalline powder obtained from titanium(IV) bis(acetylacetonate) diisopropoxide (75% solution in 2-propanol) (1) was monitored by simultaneous TG/DTA, EGA-FTIR and EGA-MS measurements and the results were compared with those of amorphous powder obtained by gelling of...

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Bibliographic Details
Published inJournal of thermal analysis and calorimetry Vol. 97; no. 1; pp. 39 - 45
Main Authors Acik, Ilona Oja, Madarasz, J, Krunks, M, Tonsuaadu, K, Pokol, G, Niinisto, L
Format Journal Article
LanguageEnglish
Published 01.07.2009
Subjects
Acetone
Acetylacetone
Carbon dioxide
Carbon monoxide
Crystal structure
Evolution
Thermal degradation
Titanium dioxide
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Summary:Thermal decomposition of dried crystalline powder obtained from titanium(IV) bis(acetylacetonate) diisopropoxide (75% solution in 2-propanol) (1) was monitored by simultaneous TG/DTA, EGA-FTIR and EGA-MS measurements and the results were compared with those of amorphous powder obtained by gelling of acetylacetonate-modified titanium(IV) tetra-isopropoxide at molar ratio of 1:2 in boiling 2-methoxyethanol (2). Thermal degradation of 1 in the temperature range of 25--700 degree C consists of 5 steps with a total mass loss of 62.5%. EGA by FTIR and MS revealed the release of H2O below 120 degree C; followed by an intensive evolution of acetylacetone around 245 degree C. The release of acetone and acetic acid occurs up to 270 degree C and that of CO and CO2 up to 530 degree C.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1388-6150
1572-8943
DOI:10.1007/s10973-008-9647-1