TY  - SER
AU  - Vieitez,Ignacio
AU  - Silva,Camila da
AU  - Alckmin,Isabella
TI  - Effect of temperature on the continuous synthesis of soybean esters under supercritical ethanol
PY  - 2009///
CY  - 
PB  - 
N2  - Transcripción del resúmen publicado por el autor: This work investigated the effect of temperature on the reaction efficiency of soybean oil transesterification in supercritical ethanol in a continuous catalyst-free process under different water concentrations and at varying substrate flow rates. Experiments were performed in the temperature range from 250 to 325 °C, at 20 MPa, with an oil to ethanol molar ratio of 1:40. Results showed that temperature and substrate flow rates strongly affected the reaction conversion to fatty acid ethyl esters, decomposition, and trans-isomerization of unsaturated fatty acids, mainly for C18:2 and C18:3. It is shown that the synthesis of esters was favored by the addition of water to the reaction medium and the degradation phenomenon decreased as water concentration increased from 0 to 10 wt %
UR  - http://pubs.acs.org/doi/full/10.1021/ef800640t
ER  -