to methyl esters at different temperatures and concentrations of catalyst, after 80 min of reaction. Examination of this table reveals that, although there is a clear effect of temperature on conversion and productivity at 0.2 wt% of NaOH as catalyst, it is less important when concentration of catalyst is increased.
These results show that, within the range studied, the influence of temperature over the palm oil methanolysis is low but perceptible, particularly noticeable during the first min of the reaction, and it is greater when the concentration of catalyst is 0.2 wt% of NaOH. These results agree with those presented by Freedman et al. [2], Noureddini and Zhu [12], and Darnoko and Cheryan [14] who reported that the influence of temperature on the concentration is low around the boiling point of the alcohol.