A comparative study of the separation stage of rapeseed oil transesterification products obtained using various catalysts

Esipovich, Anton L.; Rogozhin, A. E.; Belousov, Artem S.; Kanakov, E. A.; Данов, С. М.

doi:10.1016/j.fuproc.2018.01.023

Cited by 25 publications

(12 citation statements)

References 38 publications

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“…[4][5][6] Although alkaline homogeneous catalysis is the most often used technique for transesterification due to: (i) its relatively low cost compared to heterogeneous and enzymatic catalysts; (ii) the easy availability of alkaline catalysts in the market, and (iii) its ability to accelerate transesterification effectively under mild reaction conditions, heterogeneous catalysis has various advantages. 7,8 Unlike homogeneous catalysis, heterogeneous catalysts do not generate soaps, enable simpler product and catalyst separation, decreasing the need for downstream purification, and allow waste treatment in a more environmental friendly way. Furthermore, heterogeneous catalysis facilitates catalyst reuse and the implementation of continuous processing.…”

Section: Introductionmentioning

confidence: 99%

High Conversion of Palm Olein to Ethyl Esters Using a Strong Anion Exchange Resin: Study of the Operational Parameters

Bejarano-Alva

Hirata

Sampaio

et al. 2020

J. Braz. Chem. Soc.

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Biodiesel, known as a mixture of fatty acid ethyl/methyl esters, is seen as an alternative, ecofriendly, biodegradable and renewable non-fossil fuel. The use of heterogeneous catalysts for biodiesel synthesis can solve several problems associated with the homogeneous alkaline catalyzedtransesterification. Therefore, this work reports the evaluation of the commercial resin Amberlyst A26OH, a strong anion exchange resin, as a heterogeneous catalyst for the batch transesterification of refined palm olein with ethanol. It was studied the effects of the main operational parameters, considering the molar ratio of the reaction mixture (MRRM), namely the molar ratio of ethanol to olein taking into account only the ethanol added to the reaction system, and the total molar ratio (TMR), in this case considering also the amount of ethanol carried by the resin after its pretreatment. It was determined an optimal range of operational conditions by response surface methodology, guaranteeing conversion to ethyl esters higher than 96% with a catalyst amount corresponding to a range from 10.4 to 11.4% of the oil quantity, a temperature within the range of 55 to 60 °C and a MRRM within the range from 3.5:1 to 6.0:1.

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Section: Introductionmentioning

confidence: 99%

High Conversion of Palm Olein to Ethyl Esters Using a Strong Anion Exchange Resin: Study of the Operational Parameters

Bejarano-Alva

Hirata

Sampaio

et al. 2020

J. Braz. Chem. Soc.

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“…Vegetable oils can be promising, cheapest and available types of renewable sources for chemicals production. A large amount of vegetable oils is currently used for fatty acid methyl esters (FAMEs, biodiesel) production [1]. Glycerol is formed as a by-product with 10% of the total volume of biodiesel.…”

Section: Introductionmentioning

confidence: 99%

Mechanism Analysis and Kinetic Modelling of Cu NPs Catalysed Glycerol Conversion into Lactic Acid

et al. 2019

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Mechanism analysis and kinetic modeling of glycerol conversion into lactic acid in the alkaline media with and without heterogeneous catalyst Cu NPs are reported. The reaction pathways were determined in agreement with the experimental results and comprise several types of reactions, namely dehydrogenation, hydrogenolysis, dehydration and C–C cleavage. Experimental concentration-time profiles were obtained in a slurry batch reactor at different glycerol, NaOH and Cu NPs concentrations in a temperature range of 483–518 K. Power law, Langmuir–Hinshelwood (LH) and Eley–Rideal (ER) models were chosen to fit the experimental data. The proposed reaction pathways and obtained kinetic model adequately describe the experimental data. The reaction over Cu NPs catalyst in the presence of NaOH proceeds with a significantly lower activation barrier (Ea = 81.4 kJ∙mol−1) compared with the only homogeneous catalytic conversion (Ea = 104.0 kJ∙mol−1). The activation energy for glycerol hydrogenolysis into 1,2-propanediol on the catalyst surface without adding hydrogen is estimated of 102.0 kJ∙mol−1. The model parameters obtained in this study would be used to scale an industrial unit in a reactor modeling.

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“…In case of applying organic acids, acetic or citric acid is used. In the case described [6] neutralization was carried out with four strong concentrated inorganic acids, namely phosphoric, sulfuric, hydrochloric, perchloric and with an organic oneacetic acid. The most effective has been recognized orthophosphoric acid.…”

Section: An Analysis Of Last Researchesmentioning

confidence: 99%

Study of Methods of Biodiesel Neutralization with Aqueous Solution of Lymonic Acid

et al. 2020

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A comparative study of the separation stage of rapeseed oil transesterification products obtained using various catalysts

Cited by 25 publications

References 38 publications

High Conversion of Palm Olein to Ethyl Esters Using a Strong Anion Exchange Resin: Study of the Operational Parameters

High Conversion of Palm Olein to Ethyl Esters Using a Strong Anion Exchange Resin: Study of the Operational Parameters

Mechanism Analysis and Kinetic Modelling of Cu NPs Catalysed Glycerol Conversion into Lactic Acid

Study of Methods of Biodiesel Neutralization with Aqueous Solution of Lymonic Acid

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