Experimental optimization during epoxidation of a high-oleic palm oil using a simplex algorithm

This work explored the epoxidation of high oleic palm oil (HOPO) extracted from recently developed palm tree hybrids. The process was carried out by reaction with 50 % wt·H2O2 using peracetic acid generated in-situ as oxygen carrier, and H2SO4 as catalyst. The study focused on the optimization of th...

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Veröffentlicht in:Industrial crops and products Jg. 187; S. 115321
Hauptverfasser: Bohórquez, Wilson F., Orjuela, Alvaro, Rincón, Paulo César Narváez, Cadavid, Juan Guillermo, García-Nunez, Jesús A.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier B.V 01.11.2022
Schlagworte:
acetic acid
algorithms
Arecaceae
catalysts
Epoxidation
epoxidation reactions
epoxides
ethylene oxide
High oleic palm oil
Optimization
oxygen
palm oils
Peracetic acid
Prileschajew reaction
Simplex algorithm
temperature
Epoxidation
Prileschajew reaction
Peracetic acid
High oleic palm oil
Optimization
Simplex algorithm
ISSN:0926-6690, 1872-633X
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Zusammenfassung:This work explored the epoxidation of high oleic palm oil (HOPO) extracted from recently developed palm tree hybrids. The process was carried out by reaction with 50 % wt·H2O2 using peracetic acid generated in-situ as oxygen carrier, and H2SO4 as catalyst. The study focused on the optimization of the operating conditions to maximize the productivity of oxirane groups in the epoxidized oil, considering the conversion of unsaturated groups and the selectivity to oxirane ring. The optimization was done by experimental application of a simplex algorithm varying reaction temperature (55–70 °C), catalyst loading (1–5 % wt.), mol ratio of H2O2 to HOPO unsaturations (1−10), acetic acid loading with respect to HOPO (2–10 % wt.), and reaction time (1–6 h). Optimal conditions were obtained after eight experimental steps, reaching a conversion of oil’s unsaturations of nearly 90 %, with a selectivity towards oxirane groups of 88.6 %. The obtained oil had an oxygen oxirane content of 3.48 %wt., which corresponded to ~80 % of theoretical yield. The optimal conditions were tested in a subsequent kinetic experiment, and the results were reproduced obtaining an epoxy number of 3.5 and a yield of 79.7 %. This methodology can also be used to assess novel epoxidation catalysts. [Display omitted] •High oleic palm oil (HOPO) was used as epoxidation feedstock.•Prileschajew reaction with in situ peracetic acid was employed.•Experimental optimization was carried out using a simple algorithm.•Epoxidized HOPO with an oxirane oxygen content of 3.5 % was achieved.•Results were reproducible with 80 % theoretical yield.
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ISSN:0926-6690
1872-633X
DOI:10.1016/j.indcrop.2022.115321