Effect of Temperature on Interesterification of Rapeseed Oil with Methyl Acetate in Presence of BuOK/BuOH
| Autor: | Kampars Valdis, Gravins Reinis, Lazdovica Kristine, Kampare Ruta |
|---|---|
| Jazyk: | English<br />French |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | E3S Web of Conferences, Vol 103, p 02006 (2019) |
| Druh dokumentu: | article |
| ISSN: | 2267-1242 20191030 |
| DOI: | 10.1051/e3sconf/201910302006 |
| Popis: | If the interesterification reaction of rapeseed oil with methyl acetate at reactant to oil molar ratio of 18:1 in presence of potassium tert-butoxide in tert-butanol of molar ratio to oil 0.08 is conducted at a temperature of about 35 °C, reaction time for full conversion of oil is shorter than one hour, while at a temperature of 55 °C it is approximately 15 minutes. Reaction time at the desired temperature has a wide "optimal" range and cannot be an effective variable for the process optimisation. Experimental results at the temperature of 25 °C confirm the pseudo-first order of the reaction, which lowered towards the end of the reaction. The pseudo-first order rate constant was 0.63 min-1. Fuel characteristics of the interesterification reaction mixtures without purification improved with the rising of reaction temperature from 35 °C to 55 °C, however, they fail to meet the requirements of standard EN14214 for biodiesel. Methyl acetate to oil molar ratio 18:1 is too low for obtaining products with kinematic viscosity below 5.0 mm2/s. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|