Esterification of Oleic Acid with Methanol Catalyzed by P-Toluene Sulphonic Acid/MCM-41

Abstract:

The p-toluene sulphonic acid (PTSA)/MCM-41 was prepared by impregnation method with self-synthesized MCM-41. The investigation of effects on PTSA solution concentration was investigated and the catalyst prepared with 0.1mol/L PTSA performed best. Oleic acid was chosen as a simulation of high-acid-value oil to esterify with methanol. The experimental results showed that PTSA/MCM-41 was a high active catalyst in esterification. The optimal condition was as following: the reaction temperature was 80°C, the methanol/oleic acid molar ratio was 5:1, the catalyst amount was 5% (wt. /wt.) of the oleic acid, and reaction time was 1h. Under this condition, the oleic acid conversion could reach 94.3%. The stability of the catalyst was very well for the oleic acid conversion can still maintain 92.8% after used four times.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 869-872
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.869
• Online since: January 2013
• Authors: Li Jing Gao, Wei Xu, Guo Min Xiao
• Keywords: Bio-Diesel, Esterification, MCM-41, P-Toluene Sulphonic Acid (PTSA), Solid Acid

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