Journal
CATALYSTS
Volume 7, Issue 10, Pages -Publisher
MDPI AG
DOI: 10.3390/catal7100309
Keywords
biolubricants; acid exchange resin; epoxidized soybean oil; ring opening reaction; kinetic modelling
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Funding
- Finanziamento della Ricerca di Ateneo [000023-ALTRI_DR_3450_2016_Ricerca di Ateneo-CA_BIO]
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This work deals with the preparation of biolubricant basestocks through the ring-opening reaction of epoxidized soybean oil (ESO) by alcohols in presence of solid acid catalysts (SAC-13 resin). To this end, different experimental runs were carried out in a lab-scale reactor, analyzing the effect of the alcohol (methanol, ethanol, 2-propanol, 2-butanol), catalyst mass loading (from 1 to 10 wt % with respect to the oil mass) and operating temperature (60-90 degrees C). The main focus of investigation was oxirane conversion. The study was complemented by FT-IR, H-1 NMR and kinematic viscosity characterization of the different products of the ring-opening reaction. Experimental conversion data were fitted through a suitable kinetic model. Values of the best-fitting parameters in terms of rate constant, activation energy and catalyst reaction order were obtained, and were potentially useful for the design of an industrial process.
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