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This work reports the results obtained from the transesterification of castor oil with methanol under soft conditions (low temperature and atmospheric pressure), employing basic solids as Ba/ZnO, Mg/ZnO, and K/ZnO. It was found that the different systems exhibit high catalytic activity for the transformation of castor oil, but the Ba/ZnO system showed a highest tendency toward cyclation of ricinoleic acid to form a product known as macrolactone, namelly (E)- 13-n-hexyloxacyclictridec-10-en-2-ona. The catalytic systems were analyzed through FT-IR, TEM, SEM, X-ray diffraction, temperature programmed reduction, analysis of surface area and the esters obtained from the reaction were analyzed by gas chromatography coupled to mass spectroscopy (GC-MS).

ingeniería y competitividad revista científica y tecnológica/ingeniería y competitividad

Síntesis de (E)-13-n-hexiloxaciclicotridec-10-en-2-ona (macrolactona) por transesterificación de aceite de ricino mediante catalizadores heterogéneos basados en óxido de zinc