Abstract
This study investigated the production of epoxidized soybean oil by conventional and ultrasound-assisted methods. Epoxidized soybean oil was synthesized by reacting soybean oil, hydrogen peroxide, and carboxylic acid (formic or acetic acid). Sulfuric acid was used as a peroxidation catalyst. The effects of sonication, the carboxylic acid (formic and acetic acid), peroxidation catalyst (H2SO4), and temperature (50, 60, and 80 °C) were evaluated on the yield and productivity of epoxidized soybean oil. The reaction was carried out for 5 h in the conventional method and for 3 h in the ultrasound-assisted method. In both conventional and ultrasound-assisted methods, soybean oil yields into epoxidized soybean oil surpassed 90% only when formic acid and sulfuric acid were applied. The conventional method occurred faster than the sonochemical method for yields of up to 90%. The ultrasound-assisted method was the best technological option to attain a product of high purity (98%). The sonochemical method could be considered a promising technology if the ultrasound equipment’s limitations can be overcome.
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Funding
This study was funded by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico (FUNCAP), and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES).
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Dayanne L. H. Maia: Conceptualization, methodology, formal analysis and investigation, writing—original draft preparation; Fabiano A. N. Fernandes: Conceptualization, writing—review and editing, funding acquisition, supervision.
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Maia, D.L.H., Fernandes, F.A.N. Influence of carboxylic acid in the production of epoxidized soybean oil by conventional and ultrasound-assisted methods. Biomass Conv. Bioref. 12, 5861–5868 (2022). https://doi.org/10.1007/s13399-020-01130-0
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DOI: https://doi.org/10.1007/s13399-020-01130-0