Degradation of the oxirane ring of epoxidized vegetable oils in liquid–liquid heterogeneous reaction systems

Campanella, Alejandrina; Baltanás, Miguel Angel

doi:10.1016/j.cej.2006.01.010

Cited by 106 publications

(111 citation statements)

References 13 publications

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“…In recent years, studies investigating the detailed and systematic evaluation of these reactions have been conducted, including peracid formation, H 2 O 2 decomposition, epoxidation of unsaturated bonds, and ring-opening reactions. Based on related studies in the literature, [3,[6][7]10,[16][17][18][19] the reactions occurring in the system can be summarized as follows:…”

Section: Two-phase Model Of the Epoxidation Reactionmentioning

confidence: 99%

Mass transfer and reaction kinetics of soybean oil epoxidation in a formic acid‐autocatalyzed reaction system

Nie

Chen

et al. 2016

Can J Chem Eng

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In this study, the mass transfer and reaction kinetics of soybean oil epoxidation using concentrated hydrogen peroxide in a formic acidautocatalyzed reaction system were studied in detail. Studying the mass transfer of formic acid showed that the influence of reactant diffusion near the interface is eliminated when the stirring rate is > 120 rpm in a double-stirred cell, and the mass transfer rate decreases greatly with the conversion of double bonds and a decrease of reaction temperature. A temperature increase has little impact on the equilibrium of formic acid in the oil/water system, while an increase of epoxidized soybean oil significantly increases the value of the partition coefficient of formic acid. Another important aspect in the kinetic study is the decomposition of performic acid, which can cause the reduction of H 2 O 2 and formic acid during the reaction. Finally, a biphasic model, which considers all reactions in oil and aqueous phases, the equilibrium and mass transfer of reagents and products between the phases, and the evolution of proton concentrations with time, was developed to describe the epoxidation process.

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Section: Two-phase Model Of the Epoxidation Reactionmentioning

confidence: 99%

Mass transfer and reaction kinetics of soybean oil epoxidation in a formic acid‐autocatalyzed reaction system

Nie

Chen

et al. 2016

Can J Chem Eng

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“…Synthesis of polyol by epoxy ring opening using water was done according to the reference [34]. The reaction is shown in Figure 1.…”

Section: Synthesis Of Polyol Balanites Roxburgii Oil (Pbro)mentioning

confidence: 99%

Design novel polyhydroxyl fatty amide based onBalanites roxburgiioil and its application for coating

Tathe

Jagtap

2014

Designed Monomers and Polymers

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Poly(urethanamide) was synthesized from Balanites roxburgii oil (BRO). Initially, BRO was modified by epoxidation and subsequently the epoxy ring was hydrolyzed. The resulting polyol Balanites roxburgii oil (PBRO) was reacted with diethanolamine to form corresponding fatty amide polyol (FAP). This FAP was reacted with various isocyanates like hexamethylene diisocyanate (HDI), biuret of hexamethylene diisocyanate, and isophorone diisocyanate at NCO to OH ratio 0.75:1 and 1:1. The poly(urethanamide) films were evaluated for chemical resistance, optical and mechanical properties. Furthermore, the water absorption test, in vitro degradation, and thermogravimetric analysis of poly(urethanamide) films were studied. Epoxidized Balanites roxburgii oil and PBRO were characterized by FTIR and physico-chemical analysis. FAP was characterized by FTIR, 1 H NMR, and physico-chemical analysis.

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“…4 Here it is worth remembering that although acid hydrolysis is an extremely slow process for the hydrolysis of epoxide groups of epoxidised vegetable oil, the same process is very fast in an aqueous hydrogen peroxide-acid solution of a homogeneous catalyst. 22 Under these reaction conditions, the opening of oxirane ring by solvated acetic acid progresses in both the aqueous and organic phases, although the rate is slow in the latter phase. If no catalyst is added, the reaction is also slower in the aqueous phase.…”

Section: Epoxidation Of Vegetable Oilsmentioning

confidence: 99%

Vegetable oil-based epoxies

Karak¹

2012

Vegetable Oil-Based Polymers

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Degradation of the oxirane ring of epoxidized vegetable oils in liquid–liquid heterogeneous reaction systems

Cited by 106 publications

References 13 publications

Mass transfer and reaction kinetics of soybean oil epoxidation in a formic acid‐autocatalyzed reaction system

Mass transfer and reaction kinetics of soybean oil epoxidation in a formic acid‐autocatalyzed reaction system

Design novel polyhydroxyl fatty amide based onBalanites roxburgiioil and its application for coating

Vegetable oil-based epoxies

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