Thermal Decomposition Behaviors of Imidazolium-type Ionic Liquids Studied by Pyrolysis-Gas Chromatography
-
- OHTANI Hajime
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
-
- ISHIMURA Shinji
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
-
- KUMAI Miyuki
- Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
Search this article
Abstract
Thermal decomposition behaviors of a series of imidazolium-type ionic liquid samples were studied by pyrolysis-gas chromatography at 550°C using various detectors. As for the imidazolium halides, haloalkanes and 1-alkylimidazoles corresponding to the alkyl substituents were mainly formed through the nucleophilic attacks of halide ions to the alkyl groups followed by C-N bond cleavage, along with a minor amount of alkenes. Meanwhile, in the case of the ionic liquids with BF4, PF6 and CF3SO3 anions, corresponding alkenes were predominantly produced along with 1-alkylimidazoles rather than haloalkanes. No boron-containing products were found even from the samples with BF4 anion, whereas minor but clear peaks of phosphorous-containing products were observed in the pyrograms of the samples with PF6 anions. As for the samples with longer alkyl group, the pyrolyzates reflecting the C-C bond scissions in the alkyl groups were also formed to some extent. Meanwhile, imidazole rings did not decompose under the experimental conditions at around 550°C.
Journal
-
- Analytical Sciences
-
Analytical Sciences 24 (10), 1335-1340, 2008
The Japan Society for Analytical Chemistry
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001204257562496
-
- NII Article ID
- 10025207568
-
- NII Book ID
- AA10500785
-
- ISSN
- 13482246
- 09106340
-
- NDL BIB ID
- 9667398
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed