COMPARISON OF USUAL AND IN SIUTE ROUTES FOR SOYBEAN OIL EPOXIDATION VERGLEICH DER üBLICHEN UND IN SUITE ROUTES für Soja l EPOXIDIERUNG

The epoxide is an important intermediate for preparation of chemically modified lubricants from the vegetable oils. Finding simple epoxidation ways, will reduce time and cost of lubricant preparation. In this paper the epoxidation reaction of soybean oil has been followed in two different conditions. In first circumstances, the reaction has been followed by initial preparation of peracid followed by its addition to the oil. In second route, the peracid has been produced in situe. By measurement of concentrations of double bonds and oxirane rings in one gram of the oil, as well as the acid value, the first conditions has been monitored and optimized corresponding to time, temperature and stirring rate. By same measurements, the second setting has been optimized relative to oil: acid: peroxide ratio, temperature, time, and stirring rate. Based on the obtained results, the advantages of in situe method relative to normal route have been proved. FTIR and NMR spectra of obtained epoxy under optimum in situe conditions has been recorded and compared with the corresponding spectra of initial oil.