Key words: transesterification, heterogeneous catalysts, fatty acids ethyl esters, thermal decomposition, kinematic viscosity
Catalytic and non-catalytic transesterification of rapeseed oil in ethanol at supercritical fluid conditions with exposure to ultrasonic reactive environment are studied at 623— 653 K, 30 MPa and molar «alcohol-to-oil» ratios 12 : 1 and 18 : 1. The effect of heterogeneous catalysts on the reaction rate us revealed. Correlation between the fatty acids ethyl esters content in biodiesel and kinematic viscosity of the reaction product is established.