Modification of epoxidised canola oil

Mungroo, Rubeena; Goud, Vaibhav V.; Pradhan, Narayan; Dalai, Ajay K.

doi:10.1002/apj.448

Cited by 30 publications

(22 citation statements)

References 20 publications

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“…51 The use of peroxyformic acid to epoxidize vegetable oils unsaturation has been treated in different articles. 29,30,32,39,40 Goud et al 29 and Dinda et al 39 have used a reactor immersed in a water bath system, and did not consider the energy balance. They have observed that the epoxidation was faster with PFA than with PAA but the use of PFA was less selective.…”

Section: Introductionmentioning

confidence: 99%

“…[27][28][29][30][31][32] Establishing the mass balance only on the organic phase and assuming steady-state approach on peroxycarboxylic acids formation. 13,[33][34][35][36][37][38][39][40] The advantage of that approach is that graphical method can be used to determine epoxidation rate constants, but one neglects ring-opening reaction. This model is called homogeneous model.…”

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confidence: 99%

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Kinetic modeling strategy for an exothermic multiphase reactor system: Application to vegetable oils epoxidation using Prileschajew method

et al. 2015

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Epoxidation of cottonseed oil by peroxyformic acid (PFA) was studied in a semibatch calorimeter. This liquid-liquid reaction system is composed of different exothermic steps. Thus, a kinetic modeling strategy to diminish the number of parameters to estimate was developed by investigating each reaction system: PFA synthesis and decomposition, ringopening and epoxidation. A thermal study was conducted by determining heat capacity of the different organic species, and by analyzing the evolution of global heat-transfer coefficient with the reaction extent. The epoxidation reaction was performed in a semibatch reactor under isoperibolic mode within an initial temperature range of 50-708C, an organic phase of 30-34 wt %, a formic acid molar flow rate of 0.02-0.05 mol/min and an addition time of 25-50 min. The interfacial mass transfer was supposed to be faster than the intrinsic reaction kinetics suppressing the use of mass transfer correlation. Nonlinear regression was used to estimate the kinetic and thermal parameters. The kinetic parameters of epoxidation of the three different fatty acids, namely oleic, linoleic, and its intermediate were estimated. The reaction enthalpy of epoxidation was estimated to 2230 6 3.8 kJ/mol, and the reaction enthalpy of ring-opening was measured to be 290 kJ/mol by Tian-Calvet calorimeter.Kinetic modeling of vegetable oils epoxidation by peroxycarboxylic acids formed in situ in batch and semibatch reactor system has been described by several research groups. This system is complex due to the presence of several consecutive steps. Different approaches have been done such as:Taking into account mass transfer parameters using different correlations or by estimating them, this model is called two-phase kinetic model. Frequently, only carboxylic and peroxycarboxylic acids mass-transfer coefficients were taken into account. [24][25][26] Pseudohomogeneous model by assuming fast mass transfer compared to reaction kinetics, this leads to a simplification of the mass balance equations. [27][28][29][30][31][32] Establishing the mass balance only on the organic phase and assuming steady-state approach on peroxycarboxylic acids formation. 13,[33][34][35][36][37][38][39][40] The advantage of that approach is that graphical method can be used to determine epoxidation rate constants, but one neglects ring-opening reaction. This model is called homogeneous model.Some authors have focused their study only on the ringopening reactions system in batch or semibatch reactor. One can distinguish the two following approaches:Only considering the organic phase and using a pseudofirst-order approach. 41-43 Figure 1. Simplified mechanism of the Prileschajew oxidation of vegetable oils.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Kinetic modeling strategy for an exothermic multiphase reactor system: Application to vegetable oils epoxidation using Prileschajew method

et al. 2015

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“…A comparison of the life cycles and the environmental impact of soy‐ and petro‐based polyols has also been discussed . Usually, vegetable‐oil‐based polyol synthesis is a two‐step process, in which the first step is the epoxidation of unsaturated vegetable oil fatty acids or fatty esters . The second step of the process is the subsequent reaction of the epoxy groups, which usually involves two or more hydroxyl‐group‐containing reactants and acid catalysts .…”

Section: Introductionmentioning

confidence: 99%

Biobased epoxy resin from canola oil

Omonov

Curtis

2013

J of Applied Polymer Sci

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Epoxidized canola oil (ECO)-based thermoset epoxy resins were formulated with phthalic anhydride (PA) as the curing agent for different ratios of ECO to PA (1:1, 1:1.5, and 1:2 mol/mol) at curing temperatures of 155, 170, 185, and 200 C. The gelation process of the epoxy resins and the viscoelastic properties of the systems during curing were studied by rheometry, whereas the dynamic mechanical and thermal properties of the cured resins were studied by dynamic mechanical analysis (DMA) and differential scanning calorimetry. We found that the thermomechanical properties of the resins were not strongly dependent on the curing temperature of the resin, although elevated temperatures significantly accelerated the curing process. However, an increase in the curing agent (PA) amount significantly altered both the reaction rate and the thermomechanical properties of the final resin. Thus, in the ECO/PA system, the selection of the combination of the curing temperature and the molar ratios of the curing agent could be used to design thermoset resins with unique thermomechanical properties.

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“…For example, Cai et al [78] and Mungroo et al [79] found a value of 10.3 and 10.7 kcal/mol, using soybean and canola oil as raw material, respectively. There is a small diference among these values and our determined one (7.3 kcal/mol).…”

Section: Kinetic Model For the In Situ Epoxidation Of Grape Seed Oilmentioning

confidence: 99%

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

Haro¹,

Rodrı́guez²,

Carmona³

et al. 2018

Grapes and Wines - Advances in Production, Processing, Analysis and Valorization

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Grape processing produces a substantial amount of residues that are highly polluting and expensive to treat, being grape seed one of the main by-products with high commercial interest. During the extraction process of grape seed oil, most of the nutraceutical compounds remain on the solid cake. This book chapter resumes the potential utilization of grape seed oil for producing biobased materials through environmentally friendly processes that could substitute petroleum-derived products. Special atention is given to transesteriication and epoxidation processes. The transesteriication of grape seed oil in presence of methanol drives to the production of a biodiesel with excellent low-temperature properties. According to EN 14214, grape seed oil-based biodiesel presents a slightly lower cetane number than the speciied limit. In addition, this biodiesel presents a low oxidation stability which can be improved by the incorporation of oxidation stabilizer. Atending to the epoxidation of grape seed oil, short reaction times and high temperatures are advised. Epoxidized grape seed oil can be used for the synthesis of biobased polyols and its further application on the synthesis of polyurethane compounds.

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Modification of epoxidised canola oil

Cited by 30 publications

References 20 publications

Kinetic modeling strategy for an exothermic multiphase reactor system: Application to vegetable oils epoxidation using Prileschajew method

Kinetic modeling strategy for an exothermic multiphase reactor system: Application to vegetable oils epoxidation using Prileschajew method

Biobased epoxy resin from canola oil

Revalorization of Grape Seed Oil for Innovative Non-Food Applications

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