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Acid-Catalyzed Homogeneous Esterification Reaction for Biodiesel Production from Palm Fatty Acids |
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| Authors: | Donato A. G. Aranda Rafael T. P. Santos Neyda C. O. Tapanes André Luis Dantas Ramos Octavio Auqusto C. Antunes |
| Affiliation: | 1. Greentec, Laboratório de Tecnologias Verdes, Escola de Química, Universidade Federal do Rio de Janeiro—UFRJ, Centro de Tecnologia, Bloco E, Sala 211, Cidade Universitária, Ilha do Fund?o, CEP 21945-970, Rio de Janeiro, RJ, Brazil 2. LCAT/ITP, Laboratório de Catálise, Instituto de Tecnologia e Pesquisa, Av. Murilo Dantas, 300—Prédio do ITP, Farolandia, CEP 49032-490, Aracaju, Sergipe, Brazil 3. PEP/UNIT, Programa de Pós-Gradua??o em Engenharia de Processos, Universidade Tiradentes, Av. Murilo Dantas, 300, Farolandia, CEP 49032-490, Aracaju, Sergipe, Brazil 4. Instituto de Química, Universidade Federal do Rio de Janeiro, CT Bloco A, Sala 641, Cidade Universitária, Ilha do Fund?o, CEP 21949-900, Rio de Janeiro, RJ, Brazil |
| Abstract: | This work deals with esterification of palm fatty acids to produce biodiesel in a batch reactor, using homogeneous acid catalysts, evaluating the effect of the alcohol used, presence of water, type and concentration of catalysts. Methanesulfonic and sulfuric acid were the best catalysts. Reaction with methanol showed greater yields. It was showed very clearly that the presence of water in the reaction medium showed a negative effect in the reaction velocity. Kinetic parameters were estimated and molecular modeling was performed. Protonation of the carboxylic moiety of the fatty acid were defined as rate determinant step for the reaction. |
| Keywords: | Esterification Biodiesel Fatty acid Homogeneous catalysis |
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