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metadata.dc.type: | Artigo de Periódico |
Title: | Evaluation of thermal stability of quinones by thermal analysis techniques |
Other Titles: | Thermochimica Acta |
Authors: | Sousa, Eliane Teixeira Silva, Mateus Melo da Andrade, Sandro José de Cardoso, Manuela Pedra Silva, Luciana Almeida Andrade, Jailson Bittencourt de |
metadata.dc.creator: | Sousa, Eliane Teixeira Silva, Mateus Melo da Andrade, Sandro José de Cardoso, Manuela Pedra Silva, Luciana Almeida Andrade, Jailson Bittencourt de |
Abstract: | The thermal behavior of quinones, such as 1,4-benzoquinone; 1,2-naphthoquinone; 1,4-naphthoquinone; 9,10-phenanthraquinone and 9,10-anthraquinone, was evaluated by simultaneous thermogravimetry (TG) and differential scanning calorimetry (DSC). Headspace analysis in GC–MS in different temperatures previously identified by TG and DSC was also performed and provided information about thermal behavior of quinones and their degradation products. Results showed that 1,4-benzoquinone, 1,4-naphthoquinone and 9,10-anthraquinone are thermally stable over the range of the temperature evaluated, while 1,2-naphtoquinone and 9,10-phenanthraquinone decompose above 100 °C and 215 °C, respectively. Overall, results indicate that the molecular structure influences strongly the course of the thermal decomposition of these quinones and it is a determining factor for its thermal stability. |
Keywords: | Quinones Thermal behavior Thermal stability TG DSC |
metadata.dc.rights: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/15691 |
Issue Date: | 2012 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
Files in This Item:
File | Description | Size | Format | |
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Eliane Teixeira Sousa.pdf | 588,04 kB | Adobe PDF | View/Open |
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