Zinc Monoglycerolate as Highly Active and Reusable Catalyst in the Methyl Transesterification of Refined Soybean Oil

Lisboa, Fábio da Silva; Silva, Fabiano Rosa da; Ramos, Luiz Pereira

doi:10.1007/s10562-013-1050-2

Cited by 6 publications

(10 citation statements)

References 21 publications

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“…As for the reaction conditions, the ranges of values were set in agreement with those of previous works (Kanda et al, 2017;Lisboa et al, 2013;Zatta et al, 2013) (even though the study by Kanda et al (2017) was performed using ethanol, which is less reactive than methanol). The stirring speed was fixed at 500 rpm for all the reactions, since this was demonstrated to be the optimum value (Lisboa et al, 2013;Zatta et al, 2013). Both esterification and transesterification reactions were also performed in the absence of catalysts, in order to assess the effective contribution of the catalysts.…”

Section: Catalytic Testsmentioning

confidence: 91%

“…As for the zinc monoglycerolate, Lisboa et al (2013) reported the possibility that this catalyst could be reused three times, while Reinoso et al (2014) performed five catalytic cycles with this solid without its deactivation. In this work, three different batches were prepared and after the X-Ray Diffraction (XRD) analysis confirmed the formation of the desired compound, as shown in Fig.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…Each unit has unique features, concerning the catalysts, raw materials, reactional conditions (temperature, pressure, density, viscosity, etc) and purification operations. For the development of this strategy, two solid catalysts with known catalytic activity were selected and retested under reaction conditions which were different than those already presented in the literature (Lisboa et al, 2014;Lisboa et al, 2013;Reinoso et al, 2014;Zatta et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the catalyst chosen for the transesterification reaction was zinc monoglycerolate, mainly because of its thermal stability, which allowed the use of this solid at higher temperatures than those employed by other authors (Lisboa et al, 2013;Reinoso et al, 2014), so as to improve the reaction evolution. The use of glycerolates (also named glyceroxides) has a close relationship with the use of oxides, since they are formed in situ during transesterification reactions due to the presence of glycerol (Kouzu et al, 2009;León-Reina et al, 2013;López Granados et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The reaction conditions chosen to perform this study are slightly different than those reported in previous works (Lisboa et al, 2014;Lisboa et al, 2013;Reinoso et al, 2014;Zatta et al, 2013), mainly considering the temperature range. The first block of experiments is related to the study of each reaction, while the second block is related to the processing of acid oil (FFA contents of nearly 40 %) through the coupled reactions.…”

Section: Introductionmentioning

confidence: 99%

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Preliminary Assessment of the Processing of High-Acidity Fatty Materials Using Solid Catalysts for the Obtainment of Fatty Acid Methyl Esters

Kanda

Hamerski

Corazza

2019

Braz. J. Chem. Eng.

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This work presents the processing of a high-acidity oil through sequential reactions of esterification using montmorillonite K10 and transesterification using zinc monoglycerolate. Since these solids had not been employed along with this approach beforehand, the objective of this work is to provide a general insight of the proposed process and demonstrate its technical feasibility. In this sense, the processing of a synthetic mixture containing soybean oil and lauric acid provided a reduction of the free fatty acid content from (40.8±0.1) % to (3.1±0.4) % after the esterification reaction and a fatty acid methyl ester yield of (95.4±0.2) % was obtained after the transesterification reaction. As compared to traditional homogeneous catalysts, the solid catalysts employed in this work require higher reaction times to achieve satisfactory ester yields but, on the other hand, they are less sensitive to the presence of both water and free fatty acids in the raw materials and can be easily recovered and reused. Therefore, the results accomplished may help the development of a technology for processing high-acidity fatty materials in order to obtain biodiesel, although its economic feasibility still needs a further assessment.

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Section: Catalytic Testsmentioning

confidence: 91%

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Preliminary Assessment of the Processing of High-Acidity Fatty Materials Using Solid Catalysts for the Obtainment of Fatty Acid Methyl Esters

Kanda

Hamerski

Corazza

2019

Braz. J. Chem. Eng.

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Emerging catalysis in biomass valorisation: simple Zn(II) catalysts for fatty acids esterification and transesterification

Esposito

Melchiorre²,

Annunziata

et al. 2020

ChemCatChem

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The growing concern about global warming and the consumption of fossil fuels has driven in recent decades the use of biomass as a renewable feedstock. In this context, vegetable oils, the corresponding fatty acids (FAs) and esters (FAEs) have primary importance: their esterification and transesterification lead to innovative products, that find application in several sectors, from biofuels to solvents, from surfactants to cosmetic ingredients and plasticizers. Lewis acid catalysis represents the most accredited methodology for developing processes of esterification and transesterification in line with sustainability requirements. The results available so far reveal the prevalent catalytic role of Zn(II) salts and coordination compounds, due to their beneficial eco-toxicological profile, combined with an appropriate acidity, finely tunable through selective functionalization. This review provides a picture of the state of the art in this important sector of biomass valorization. Roberto Esposito received his PhD in Chemical Sciences in 2018 at the University of Naples Federico II under the supervision of prof. F. Ruffo. He is researcher at the Department of Chemical Science of the University of Naples Federico II and his main research topics are W (VI), Zn(II) and Fe(III) based catalysts for conversion of biomasses and chemistry of tetra-coordinated and penta-coordinated complexes of Pt(II). Massimo Melchiorre graduated in Chemical Sciences in 2018. He is Board Member of ISusChem s.r.l., innovative start-up and university spin-off at the Dipartimento di Scienze Chimiche of the Università di Napoli Federico II. Company activity consists in biomass conversion and bio-based products development.

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General Assessment of the Currently Available Biodiesel Production Technologies

Paiva

Kothe

Corazza

et al. 2016

Green Fuels Technology

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Zinc Monoglycerolate as Highly Active and Reusable Catalyst in the Methyl Transesterification of Refined Soybean Oil

Cited by 6 publications

References 21 publications

Preliminary Assessment of the Processing of High-Acidity Fatty Materials Using Solid Catalysts for the Obtainment of Fatty Acid Methyl Esters

Preliminary Assessment of the Processing of High-Acidity Fatty Materials Using Solid Catalysts for the Obtainment of Fatty Acid Methyl Esters

Emerging catalysis in biomass valorisation: simple Zn(II) catalysts for fatty acids esterification and transesterification

General Assessment of the Currently Available Biodiesel Production Technologies

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