Akademik Veri Yönetim Sistemi
CHEMICAL ENGINEERING & TECHNOLOGY, 2024 (SCI-Expanded)
In this study, the impact of reaction parameters, reaction kinetics, and mechanism on the esterification of oleic acid with methanol using Purolite CT151 as a heterogeneous catalyst was investigated. The effects of molar ratio, reaction time, and catalyst amount were examined. The highest oleic acid conversion of 84 % was achieved under the following conditions: methanol/oleic acid molar ratio of 12:1, 20 wt. % catalyst amounts, a reaction time of 7 h, and a reaction temperature of 67 degrees C. The surface characterization was performed with FTIR and scanning electron microscope analysis. The proposed reaction model was based on the Eley-Rideal mechanism, where methanol adsorbed onto the catalyst surface reacted with oleic acid before water desorption. The Purolite CT151 catalyst used in the esterification of oleic acid could be a potential catalyst for waste cooking oils with high FFA content. The impact of reaction parameters, reaction kinetics and mechanism on the esterification of oleic acid with methanol using Purolite CT151 as a heterogeneous catalyst was investigated. The effects of molar ratio, reaction time, and catalyst amount were examined. Eley-Rideal mechanism was proposed as potential reaction mechanism. The kinetic data were also well matched with the Eley-Rideal mechanism where the surface reaction was assumed as the rate limiting step. The results demonstrated a high level of agreement between the experimental and calculated reaction rates. Thus, the use of Purolite CT151 in the esterification of oleic acid is considered a promising approach for processing waste cooking oils with high FFA content. Future studies could further explore the application of this catalyst in esterification and transesterification reactions involving such waste cooking oils. image