Fe2(SO4)3/C催化餐饮废油脂中游离脂肪酸酯化反应的动力学

摘要

The esterification of free fatty acids (FFA) in waste cooking oil with methanol in the presence of Fe2(SO4)3/C (ferric sulfate/active carbon) catalyst was studied. The effects of different temperature, methanol/FFA mole ratio and amount of catalyst on the conversion of FFA were investigated. The results demonstrated that under which met fully the requirements in post-treatment for efficient separation of glycerin and biodiesel. The kinetics of the esterification were also investigated under different temperatures. The results indicated that the rate-control step could be attributed to the surface reaction and the esterification processes can be well-depicted by the as-calculated kinetic formula in the range of the experimental conditions.