Journal
FUEL PROCESSING TECHNOLOGY
Volume 92, Issue 5, Pages 952-958Publisher
ELSEVIER
DOI: 10.1016/j.fuproc.2010.12.016
Keywords
Supercritical biodiesel; Carbon dioxide; Continuous process; Catalyst-free process
Funding
- CNPq
- Petrobras S.A.
- Intecnial S.A.
- URI/Campus de Erechim
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This work investigates the production of fatty acid ethyl esters (FAEE) from the transesterification of soybean oil in supercritical ethanol in a continuous catalyst-free process using carbon dioxide as co-solvent. The experiments were performed in a microtube reactor in the temperature range of 523 K to 598 K. from 10 MPa to 20 MPa. oil to ethanol molar ratio from 1:20 to 1:40, and co-solvent to substrates mass ratio from 0.05:1 to 0.2:1. Results showed that ethyl esters yield obtained increased with increasing addition of carbon dioxide to the system. Considerable reaction yields were achieved at 598 K,20 MPa. oil to ethanol molar ratio of 1:20 and using a CO2 to substrate mass ratio of 0.2:1. (c) 2011 Elsevier B.V. All rights reserved.
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