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| Registros recuperados : 71 | |
| Registros recuperados : 71 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
12/09/2019 |
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Data da última atualização: |
03/10/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
LAZZAROTTO, M.; NACHTIGALL, F. F.; SIQUEIRA, G. L. de A. de; LAZZAROTTO, S. R. da S.; LAZZAROTTO, M. |
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Afiliação: |
Márcio Lazzarotto, UFRGS; Francine Furtado Nachtigall, Inmetro SUR-RS; Geisa Liandra de Andrade de Siqueira, Mestranda da UEPG; Simone Rosa da Silveira Lazzarotto, Doutoranda da UEPG; MARCELO LAZZAROTTO, CNPF. |
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Título: |
Thermal analysis of salts from 4-nitrophenol and aliphatic amines. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Thermal Analysis and Calorimetry, v. 138, n. 1, p. 351-357, Oct. 2019. |
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DOI: |
10.1007/s10973-019-08205-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Solid samples obtained from 4-nitrophenol and aliphatic amines, in excess of amine, were submitted to thermal analysis. The TGA/DTA showed two endothermic events, with exception of tert-butylamine, which showed three endothermic peaks. The first event was the melting of the ionic salt, which temperature does not follow a pattern, and is maxim for ethylammonium minimal for butylammonium salt. For methylammonium and ethylammonium, the fusion is followed by mass loss corresponding to one amine by 4-nitrophenol, while for the others ammonium salts, this event marks the beginning of the mass variation, that is maintained until the decomposition of the 4-nitrophenol at 485 K. The temperature of the event depends of the length of the chain of the amine, while the second occurs at the same temperature for all amines. |
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Palavras-Chave: |
x. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
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024 7 $a10.1007/s10973-019-08205-9$2DOI
100 1 $aLAZZAROTTO, M.
245 $aThermal analysis of salts from 4-nitrophenol and aliphatic amines.$h[electronic resource]
260 $c2019
520 $aSolid samples obtained from 4-nitrophenol and aliphatic amines, in excess of amine, were submitted to thermal analysis. The TGA/DTA showed two endothermic events, with exception of tert-butylamine, which showed three endothermic peaks. The first event was the melting of the ionic salt, which temperature does not follow a pattern, and is maxim for ethylammonium minimal for butylammonium salt. For methylammonium and ethylammonium, the fusion is followed by mass loss corresponding to one amine by 4-nitrophenol, while for the others ammonium salts, this event marks the beginning of the mass variation, that is maintained until the decomposition of the 4-nitrophenol at 485 K. The temperature of the event depends of the length of the chain of the amine, while the second occurs at the same temperature for all amines.
653 $ax
700 1 $aNACHTIGALL, F. F.
700 1 $aSIQUEIRA, G. L. de A. de
700 1 $aLAZZAROTTO, S. R. da S.
700 1 $aLAZZAROTTO, M.
773 $tJournal of Thermal Analysis and Calorimetry$gv. 138, n. 1, p. 351-357, Oct. 2019.
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