A kinetic study of quicklime-catalyzed sunflower oil methanolysis

作者：Miladinovic Marija R; Krstic Jugoslav B; Tasic Marija B; Stamenkovic Olivera S; Veljkovic Vlada B^*

来源：Chemical Engineering Research and Design, 2014, 92(9): 1740-1752.

DOI：10.1016/j.cherd.2013.11.023

• Biodiesel
• CaO
• Kinetics
• Methanolysis
• Modeling
• Quicklime

The quicklime-catalyzed sunflower oil methanolysis was studied at mild reaction conditions. Quicklime (calcined at 550 degrees C for 4h) in amounts of 1.0, 2.5, 5.0 and 10.0% (based on the oil weight) and different molar ratios of methanol-to-oil (6:1, 12:1 and 18:1) were employed to investigate their influence on the methyl esters content and the kinetics of the methanolysis reaction. The optimal methanol-to-oil molar ratio and quicklime amount for achieving the highest fatty acid methyl esters content were established to be 12:1 and 5% (based on the oil weight), respectively. The sigmoidal kinetics of quicklime-catalyzed methanolysis reaction was described by a model which included the changing mechanism of the reaction and the triacylglycerols mass transfer limitation. The kinetic parameters were determined and correlated with the process variables. A good agreement between the kinetic model and the experimental data for all applied reaction conditions was observed.

• 出版日期2014-9