| Issue |
BIO Web Conf.
Volume 205, 2025
2025 10th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE 2025)
|
|
|---|---|---|
| Article Number | 01029 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/bioconf/202520501029 | |
| Published online | 16 December 2025 | |
Comparative analysis of the effect of two types of catalysts (Ti(OEt)4 and pTSA) on the esterification process of trimethylolpropane with oleic acid
Department of Repairing, Reliability, Mechanisms, Machines, Logistic and Chemical Technologies, Agrarian and Industrial Faculty, University of Ruse “Angel Kanchev”, Ruse, Bulgaria
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
The present study aims to investigate the efficiency of two types of catalysts: tetraethyl titanate (Ti(OEt)4,) and p-toluenesulfonic acid (p-TSA) in the esterification process of trimethylolpropane (TMP) and oleic acid (OL). A minimal excess of oleic acid relative to the stoichiometric amount (3.04:1) and 1% catalyst were used. The changes in the acid value of the mixture from 180 to 1200 minutes were studied at a reaction mixture temperature of 120 °C and under vacuum. The reaction rate and the degree of conversion with the p-TSA catalyst are significantly higher, but the mixture darkens due to the formation of oxidized products. The esterification process with the catalyst (Ti(OEt)4) is slower, but the product remains light.
© The Authors, published by EDP Sciences, 2025
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