Kinetics and Mechanism of Thermal Decomposition of Malonaldehyde Peroxide (DPM) in Solution
In this paper, the kinetics of the thermal decomposition reaction of 3,6-diethanal-1,2,4,5 tetroxane (malonaldehydeperoxide, DPM) is investigated in methanol solvents at different temperatures. In the temperature range of 130.0-166.0 ° C studied and at the concentration of 2 x 10-2 M, it follows a f...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/173577 |
| Acceso en línea: | http://hdl.handle.net/11336/173577 |
| Access Level: | acceso abierto |
| Palabra clave: | DIPEROXIDE KINETIC MECHANISM GAS CHROMATOGRAPHY https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Sumario: | In this paper, the kinetics of the thermal decomposition reaction of 3,6-diethanal-1,2,4,5 tetroxane (malonaldehydeperoxide, DPM) is investigated in methanol solvents at different temperatures. In the temperature range of 130.0-166.0 ° C studied and at the concentration of 2 x 10-2 M, it follows a first order kinetic law up to at least 60% DPM conversion. The organic products observed were malonaldehyde. A stepwise mechanism of decomposition was proposed where the first step is the homolytic unimolecular rupture of the O-O bond. The activation enthalpy and activation entropy for DPM in methanol were calculated (ΔH0# = 86.1 ± 2.7 kJ mol-1 y ΔS0# = -65.2 ± 6.0 J mol-1 K-1). |
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