Kinetics of in situ epoxidation of soybean oil in bulk catalyzed by ion exchange resin

2001 ◽  
Vol 78 (7) ◽  
pp. 725-731 ◽  
Author(s):  
Snežana Sinadinović-Fišer ◽  
Milovan Janković ◽  
Zoran S. Petrović
Keyword(s):  
Ion Exchange ◽  
Soybean Oil ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
In Situ Epoxidation ◽  
Kinetics Of

Kinetics of the Epoxidation of Castor Oil with Peracetic Acid Formed in Situ in the Presence of an Ion-Exchange Resin

2014 ◽  
Vol 53 (22) ◽  
pp. 9357-9364 ◽  
Author(s):  
Milovan R. Janković ◽  
Snežana V. Sinadinović-Fišer ◽  
Olga M. Govedarica
Keyword(s):  
Ion Exchange ◽  
Peracetic Acid ◽  
Castor Oil ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Kinetics Of

scholarly journals Kinetic models of reaction systems for the in situ epoxidation of unsaturated fatty acid esters and triglycerides

2004 ◽  
Vol 58 (12) ◽  
pp. 569-576 ◽  
Author(s):  
Milovan Jankovic ◽  
Snezana Sinadinovic-Fiser
Keyword(s):  
Fatty Acid ◽  
Ion Exchange ◽  
Unsaturated Fatty Acid ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Fatty Acid Esters ◽  
Reaction Systems ◽  
In Situ Epoxidation ◽  
Acid Esters

Mathematical models that describe the kinetics of reaction systems for the in situ epoxidation of unsaturated fatty acid esters or triglyc?rides with organic peracids are reviewed in this paper. The advantages and inadequacies of each model are discussed. A mono-phase pseudo-first order kinetic model was compared with a two phase model based on the Langmuir-Hinshelwood-Hougen-Watson (LHHW) postulates proposed by the authors of this paper. The comparison was performed on the experimentally determined values for the in situ epoxidation of soybean oil by peracetic acid in the presence of different quantities of ion exchange resin used as the catalyst. It was concluded that a complete model for in situ epoxidation in the presence of ion exchange resin as the catalyst was still not given for perorganic acid formation. In particular, we report here the possibilities of the creation of an "ideal" model for in situ epoxidation.

scholarly journals Kinetics of soybean oil epoxidation with peracetic acid formed in situ in the presence of an ion exchange resin: Pseudo-homogeneous model

2017 ◽  
Vol 23 (1) ◽  
pp. 97-111 ◽  
Author(s):  
Milovan Jankovic ◽  
Snezana Sinadinovic-Fiser ◽  
Olga Govedarica ◽  
Jelena Pavlicevic ◽  
Jaroslava Budinski-Simendic
Keyword(s):  
Acetic Acid ◽  
Ion Exchange ◽  
Soybean Oil ◽  
Peracetic Acid ◽  
Exchange Resin ◽  
Homogeneous Model ◽  
Ion Exchange Resin ◽  
Rate Coefficients ◽  
Epoxy Ring

A kinetic model was proposed for the epoxidation of vegetable oils with peracetic acid formed in situ from acetic acid and hydrogen peroxide in the presence of an acidic ion exchange resin as a catalyst. The model is pseudo-homogeneous with respect to the catalyst. Besides the main reactions of peracetic acid and epoxy ring formation, the model takes into account the side reaction of epoxy ring opening with acetic acid. The partitioning of acetic acid and peracetic acid between the aqueous and organic phases and the change in the phases? volumes during the process were considered. The temperature dependency of the apparent reaction rate coefficients is described by a reparameterized Arrhenius equation. The constants in the proposed model were estimated by fitting the experimental data obtained for the epoxidations of soybean oil conducted under defined reaction conditions. The highest epoxy yield of 87.73% was obtained at 338 K when the mole ratio of oil unsaturation:acetic acid:hydrogen peroxide was 1:0.5:1.35 and when the amount of the catalyst Amberlite IR-120H was 4.04 wt.% of oil. Compared to the other reported pseudo-homogeneous models, the model proposed in this study better correlates the change of double bond and epoxy group contents during the epoxidation process.

Washing procedure for mixed‐bed ion exchange resin decontamination for in situ nutrient adsorption

2000 ◽  
Vol 31 (3-4) ◽  
pp. 543-546 ◽  
Author(s):  
Nelson Thiffault ◽  
Robert Jobidon ◽  
Carol De Blois ◽  
Alison D. Munson
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Mixed Bed Ion Exchange
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