Thermal analysis of salts from 4-nitrophenol and aliphatic amines

Lazzarotto Marcio; Nachtigall Francine Furtado; de Andrade de Siqueira Geisa Liandrada Silveira Lazzarotto Simone RosaLazzarotto Marcelo

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Thermal analysis of salts from 4-nitrophenol and aliphatic amines

机译：Thermal analysis of salts from 4-nitrophenol and aliphatic amines

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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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《Journal of thermal analysis and calorimetry》 |2019年第1期|351-357|共7页
作者
Lazzarotto Marcio; Nachtigall Francine Furtado; de Andrade de Siqueira Geisa Liandrada Silveira Lazzarotto Simone RosaLazzarotto Marcelo;
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作者单位

Univ Fed Rio Grande do Sul, Av Bento Goncalves 9500, BR-91501970 Porto Alegre, RS, Brazil;

Inmetro SUR RS, Av Berlim 627, BR-90240581 Porto Alegre, RS, Brazil;

Univ Estadual Ponta Grossa, Av Carlos Cavalcanti 4748, BR-84030900 Ponta Grossa, PR, BrazilEmbrapa Florestas, Estr Ribeira,KM 111,POB 319, BR-83411000 Colombo, PR, Brazil;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
关键词
Ammonium salts; 4-Nitrophenol; Proton transfer; Thermal analysis;

Thermal analysis of salts from 4-nitrophenol and aliphatic amines

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