The effects of cosolvents on homogeneously and heterogeneously base-catalyzed methanolysis of sunflower oil

Todorović, Zoran B.; Stamenković, Olivera S.; Stamenković, Ivica S.; Avramović, Jelena M.; Veličković, Ana V.; Banković–Ilić, Ivana B.; Veljković, Vlada B.

doi:10.1016/j.fuel.2012.11.049

Cited by 28 publications

(23 citation statements)

References 29 publications

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“…Independently of the used catalyst, a transesterification reaction can be speeded up in the presence of a cosolvent (e.g. tetrahydrofuran, n-hexane) [10].…”

Section: Introductionmentioning

confidence: 99%

The synthesis of CaO loaded onto Al2O3 from calcium acetate and its application in transesterification of the sunflower oil

Marinković¹,

Stanković²,

Veličković³

et al. 2015

Savr tehnol

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Transesterification of sunflower oil was carried out over CaO loaded onto γ-Al 2 O 3 as heterogeneous base catalysts. The solid base catalysts were synthesized by the modified wet impregnation of calcium acetate monohydrate onto neutral γ-Al 2 O 3 , calcined at different temperatures in an inert atmosphere and characterized by FESEM, XRPD and FTIR techniques. The catalyst containing 5.5 wt. % CaO supported on γ-Al 2 O 3 calcined at 700 °C exhibited the highest FAME yield at mild reaction conditions (60 °C, atmospheric pressure, methanol-to-oil molar ratio of 9:1 and 0.51% of active species-CaO by weight of oil). The best CaO/γ-Al 2 O 3 catalyst showed a similar or lower catalytic activity than some other CaO-based catalysts at a smaller amount of the catalyst (at least two times less than in other studies).

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“…Independently of the used catalyst, a transesterification reaction can be speeded up in the presence of a cosolvent (e.g. tetrahydrofuran, n-hexane) [10].…”

Section: Introductionmentioning

confidence: 99%

The synthesis of CaO loaded onto Al2O3 from calcium acetate and its application in transesterification of the sunflower oil

Marinković¹,

Stanković²,

Veličković³

et al. 2015

Savr tehnol

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“…The particle size and specific area were <15 lm and 13.7 m 2 /g [35], respectively while the basic strength and basicity were 15.0 < H_ < 18.4 [35] and 2.46 mmol/g [36], respectively. Large pieces of quicklime were crushed and sown through standard sieves.…”

Section: Preparation Of Catalystsmentioning

confidence: 96%

Biodiesel production by methanolysis of waste lard from piglet roasting over quicklime

Stojković

Miladinović

Stamenković

et al. 2016

Fuel

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“…Hernando et al [36] studied the transesterfication of rapeseed and soybean oils combining the use of tert-butyl methyl ether and microwave irradiation to reduce the mass transfer limitation in the first reaction stage. Todorović et al [37] studied both homogeneously and heterogeneously base-catalysed sunflower oil methanolysis with and without the presence of cosolvents. In the former case, KoH and THF were used as a catalyst and a cosolvent, respectively.…”

Section: Heterogeneously Catalysed Ethanolysis Of Sunflower Oil In Thmentioning

confidence: 99%

“…No effect of THF present at the concentration of 20% on the rate of Cao-catalysed methanolysis was observed, but at higher THF concentrations, the reaction was delayed and the final fatty acid methyl esters (FAME) yield was decreased. of all the tested cosolvents, only n-hexane and THF slightly improved the methanolysis reaction in its initial period, triethanolamine and ethyl acetate had no effect, while diethyl ether, dioxane and methyl ethyl ketone negatively influenced the reaction rate and the FAME yield [37]. Sakthivel et al [38] investigated the effects of residence time and reaction temperature on the yield of fatty acid methyl ester (biodiesel) with and without the presence of biodiesel as a cosolvent.…”

Section: Heterogeneously Catalysed Ethanolysis Of Sunflower Oil In Thmentioning

confidence: 99%

Heterogeneously catalysed ethanolysis of sunflower oil in the presence of propylene glycol, ethyl acetate and diethyl ether as cosolvents

Djokic-Stojanovic¹,

Todorovic²,

Troter³

et al. 2016

Adv techn

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A heterogeneous reaction process using propylene glycol (PEG), ethyl acetate and diethyl ether as cosolvents for the transesterification of sunflower oil with ethanol in the presence of calcium oxide as a catalyst has been developed. Significant results were obtained with propylene glycol as a cosolvent. Under determined reaction conditions (Cao concentration, based on the oil weight 1.3736 mol•dm-3 ; temperature 70 °C; and ethanol-to-oil molar ratio 12:1), the conversion of sunflower oil to fatty acid ethyl esters (FAEE) exceeded 98% after 120 min, which was 2 times faster than transesterification of sunflower oil without a cosolvent. After initially enhanced ethanolysis, after 180 min ethyl acetate and diethyl ether negatively influenced the reaction rate and the FAEE yield.

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The effects of cosolvents on homogeneously and heterogeneously base-catalyzed methanolysis of sunflower oil

Cited by 28 publications

References 29 publications

The synthesis of CaO loaded onto Al2O3 from calcium acetate and its application in transesterification of the sunflower oil

The synthesis of CaO loaded onto Al2O3 from calcium acetate and its application in transesterification of the sunflower oil

Biodiesel production by methanolysis of waste lard from piglet roasting over quicklime

Heterogeneously catalysed ethanolysis of sunflower oil in the presence of propylene glycol, ethyl acetate and diethyl ether as cosolvents

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