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.
Published Version
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