Synthesis of methyl esters and triacetin from macaw oil (Acrocomia aculeata) and methyl acetate over γ-alumina

Ribeiro, Jéssica Souza; Celante, Dian; Brondani, Leoni N.; Trojahn, Débora O.; Silva, Camila da; Castilhos, Fernanda de

doi:10.1016/j.indcrop.2018.07.062

Cited by 43 publications

(26 citation statements)

References 29 publications

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“…Some authors have reported efficient ester production through the interesterification reaction with the addition of 5 to 20 wt% FFA (in oil) [ 32,47 ] and from macauba pulp oil containing 62 to 79 wt% of FFA. [ 23,34,75 ]…”

Section: Resultsmentioning

confidence: 99%

Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

Postaue

Mello

Cardozo‐Filho

et al. 2020

Euro J Lipid Sci & Tech

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Methyl esters (ME) and triacetin production from the supercritical interesterification of the product from low pressure extraction (crambe seed oil and methyl acetate) are evaluated. Reactions are conducted at 300-375°C for different residence times, at 20 MPa, and under these conditions the thermal stability of triacetin is evaluated. The effect of the free fatty acid (FFA) concentration (in oil) is determined. An increase in temperature favors the formation of ME and triacetin at shorter reaction times. At 375°C, after 15 min a drop in the ME yield is observed and triacetin is not detected. A reduction in the triacetin concentration (reaching ≈99%) is observed at 375°C. High FFA concentration (in oil) initially provided higher product generation, however, after 15 min no influence is observed. The highest ME yield (≈60%) is obtained at 300°C, along with 1.22 wt% triacetin and ≈5.0 wt% unreacted compounds. Practical Applications: This paper reports new experimental data on an integrated process for the production of methyl esters from low pressure extraction (crambe seeds and methyl acetate) and supercritical reaction of the extraction mixture. The technique used allows the removal of a high quantity of oil from good quality crambe seeds. The viability of applying the integrated process to obtain oils with a high content of free fatty acids is verified, promoting the obtainment of relatively simple methyl esters. The procedure does not require oil purification and solvent recovery prior to the reaction.

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Section: Resultsmentioning

confidence: 99%

Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

Postaue

Mello

Cardozo‐Filho

et al. 2020

Euro J Lipid Sci & Tech

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“…The same behaviour was found in the work of Alessio et al 26 and Aranda et al 38 . Regarding catalyst concentration, the reports of Alessio et al 26 , Ribeiro et al 16 and Jiang et al 39 have shown that conversion increased with catalyst content. According to Lam et al 40 , by increasing the catalyst content, more active sites would be available for the reaction, and thus higher conversions would be achieved.…”

Section: Experimental Designmentioning

confidence: 95%

“…Excessive glycerol production causes its devaluation in the market, and its separation is a significant cost‐ and time‐consuming process in production. The use of methyl acetate (MeA) and other solvents instead of alcohols usually used in these production processes has been studied as an alternative to solve issues related to glycerol production . Just a few investigations have replaced alcohol by MeA in esterification, mostly at supercritical conditions without a catalyst, that requires high energy spending at high temperatures and pressure .…”

Section: Introductionmentioning

confidence: 99%

Assessment of niobium phosphate as heterogeneous catalyst in esterification with methyl acetate

Alves

Pinheiro

Brondani

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND The aim of this work was to investigate the esterification reaction from oleic acid with methyl acetate (MeA) catalyzed by niobium phosphate to produce methyl esters. This catalyst has an amorphous structure and large surface area. Catalytic tests were performed according to an experimental design. The results were analyzed statistically and all of the variables were significant, especially the temperature. RESULTS A kinetic study of the reaction was carried out and the most suitable reaction conditions were 240 °C, 10% (m/m) of catalyst and MeA: oleic acid molar ratio 10:1. After 2 h, it was possible to obtain ≈80% (m/m) methyl oleate content. A noncatalytic test corroborated niobium phosphate activity in the reaction. A kinetic model fitted experimental data for the catalyzed and noncatalyzed reactions; kinetics parameters for Arrhenius equation were estimated. In a reuse test, the catalyst showed a gradual decrease in catalytic activity over five reaction cycles. CONCLUSION Niobium phosphate can be considered as a promising heterogeneous catalyst for biodiesel synthesis. © 2019 Society of Chemical Industry

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“…Biodiesel fuel (BDF) consisting of FAMEs and triacetin has been reportedly produced using methyl acetate from soybean oil, 55,56 macauba pulp oil, 57,58 macaw oil, 59 waste cooking oil, 60,61 and algal lipids. 62,63 This review paper focuses mainly on biodiesel produced through interesterification of different feedstock and methyl acetate.…”

Section: Biodiesel Productionmentioning

confidence: 99%

A concise review on alternative route of biodiesel production via interesterification of different feedstocks

Esan

Olabemiwo

Smith³

et al. 2021

Int J Energy Res

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Environmental challenges and decreasing fossil reserves due to increased utilization of fossil fuels have propagated the importance of alternative energy sources. Increased biodiesel production promoted excess waste crude glycerol leading to environmental issues, thereby inhibiting the sustainability of the process. This review paper discusses the different types of feedstocks utilized to produce glycerol-free biodiesel by reacting with methyl acetate via interesterification. Methyl acetate is used as an advantageous alternative to methanol in biodiesel production to overcome the environmental challenge associated with excess waste glycerol. The by-product, triacetin from the interesterification reaction, has shown excellent qualities as a fuel additive, thereby making the process cleaner and more sustainable as a result of not separating the triacetin from biodiesel. The resulting product referred to as biodiesel fuel (BDF) has been found to exhibit useful properties and applications as fatty acid methyl esters (FAME). The promising environmental and sustainability merits of the process far outweigh the slow interesterification kinetics demerits of the process, which can be overcome by suitable processing conditions. The prospects associated with biodiesel production by interesterification are also pointed out.

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Synthesis of methyl esters and triacetin from macaw oil (Acrocomia aculeata) and methyl acetate over γ-alumina

Cited by 43 publications

References 29 publications

Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

Use of the Product from Low Pressure Extraction (Crambe Seed Oil and Methyl Acetate) for Synthesis of Methyl Esters and Triacetin Under Supercritical Conditions

Assessment of niobium phosphate as heterogeneous catalyst in esterification with methyl acetate

A concise review on alternative route of biodiesel production via interesterification of different feedstocks

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