| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000199674 |
| ISSN: | 0100-4042 |
| Autors: | Eyler, Gladys N1 Cañizo, Adriana I Nesprias, Rosa K |
| Institucions: | 1Universidad Nacional del Centro de la Provincia de Buenos Aires, Facultad de Ingeniería, Olavarría, Buenos Aires. Argentina |
| Any: | 2002 |
| Període: | May-Jun |
| Volum: | 25 |
| Número: | 3 |
| Paginació: | 364-367 |
| País: | Brasil |
| Idioma: | Español |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | The thermal decomposition reaction of pinacolone diperoxide (DPP; 0.02 mol kg-1) in 2-methoxyethanol solution studied in the temperature range of 110.0-150.0 °C, follows a first-order kinetic law up to at least 50% DPP conversion. The organic products observed were pinacolone, methane and tert-butane. 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 DPP in 2-methoxyethanol were calculated (DH# = 43.8 ± 1.0 kcal mol-1 and DS# = 31.9 ± 2.6 cal mol-1K-1) and compared with those obtained in other solvents to evaluate the solvent effect |
| Disciplines | Química |
| Paraules clau: | Fisicoquímica y química teórica, Química orgánica, Descomposición térmica, Peróxidos cíclicos, Cinética, Efecto del solvente, Pinacolona, Solventes |
| Keyword: | Chemistry, Organic chemistry, Physical and theoretical chemistry, Thermal decomposition, Cyclic peroxides, Kinetics, Solvents, Solvent effect, Pinacolones |
| Text complet: | Texto completo (Ver HTML) |
