| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000313158 |
| ISSN: | 0100-4042 |
| Authors: | Leiva, Cecilia Rocio Morales1 Crnkovic, Paula Manoel Santos, Antonio Moreira dos |
| Institutions: | 1Universidade de Sao Paulo, Escola de Engenharia de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2006 |
| Season: | Sep |
| Volumen: | 29 |
| Number: | 5 |
| Pages: | 940-946 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Activation energy (Ea) is a parameter that can be applied to make predictions about the quality of oils to be used in an ICO engine. In this study, Ea was determined by thermogravimetry following two different procedures: ASTM E 1641 and Model-free kinetics. The energies were calculated in the low temperature oxidation (LTO) region for three Brazilian fuel oils (denominated A, B and C) and the results were equal using both methods: 43 kJ mol-1 (alpha=0.1 to 0.9) for oil A, 48 kJ mol-1 (alpha=0.1 to 0.5) and 65 kJ mol-1 (alpha=0.5 to 0.9) for oil B, and 58 kJ mol-1 (alpha=0.1 to 0.5) and 65 kJ mol-1 (alpha=0.5 to 0.9) for oil C. It was concluded that, among the oils studied, sample A was potentially the best option concerning the behavior in the LTO region |
| Disciplines: | Química, Ingeniería |
| Keyword: | Ingeniería de energéticos, Combustóleo, Combustión, Energía de activación, Termogravimetría |
| Keyword: | Chemistry, Engineering, Chemical engineering, Energy engineering, Fuel oil, Combustion, Activation energy, Thermogravimetry |
| Full text: | Texto completo (Ver HTML) |
