Interesterification of triglycerides with methyl acetate for biodiesel production using a cyclodextrin-derived SnO@γ-Al2O3 composite as heterogeneous catalyst

Prestigiacomo, Claudia; Biondo, Martina; Galia, Alessandro; Monflier, Éric; Ponchel, A.; Prévost, D.; Scialdone, Onofrio; Tilloy, S.; Bleta, R.

doi:10.1016/j.fuel.2022.124026

Cited by 13 publications

(3 citation statements)

References 68 publications

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“…Alkaline hydroxides and/or alkoxides have been used as catalysts in interesterification reactions conducted at room temperature. However, the poor solubility of the alkaline compounds in the reaction medium has prompted the use of complexing agents such as tetrahydrofuran and polyethylene glycol to improve solubility and reaction kinetics [25]. A recent study demonstrated the effectiveness of a calcined Mg-Al hydrotalcite catalyst in achieving a 95.9% conversion rate of soybean oil into biodiesel, with a high level of selectivity for triacetin [21].…”

Section: Introductionmentioning

confidence: 99%

Glycerol-Free Biodiesel via Catalytic Interesterification: A Pathway to a NetZero Biodiesel Industry

Youssef,

Khaled,

Aboelazayem

et al. 2024

Sustainability

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Conventional biodiesel manufacturing uses alcohol as an acyl acceptor, resulting in glycerol as a side product. The increased demand for biodiesel has led to the production of a substantial surplus of glycerol, exceeding the market need. Consequently, glycerol is now being regarded as a byproduct, and in some cases, even as waste. The present study aims to suggest an economically viable and ecologically friendly approach for maintaining the viability of the biodiesel sector. This involves generating an alternative byproduct of higher value, rather than glycerol. Triacetin is produced through the interesterification of triglycerides with methyl acetate, and is a beneficial ingredient to biodiesel, reducing the need for extensive product separation. The primary objective of this research is to improve the interesterification reaction by optimising process parameters to maximise biodiesel production while using sulphuric acid as an economically viable catalyst. The study utilised the Box–Behnken design (BBD) to investigate the influence of various process variables on biodiesel yield, such as reaction time, methyl acetate to oil molar ratio, and catalyst concentration. An optimisation study using Response Surface Methodology (RSM) focused on key process reaction parameters, including the methyl acetate to oil (MA:O) molar ratio, catalyst concentration, and residence time. The best conditions produced a biodiesel blend with a 142% yield at a 12:1 MA:O molar ratio, with 0.1 wt% of catalyst loading within 1.7 h. The established technique is deemed to be undeniably effective, resulting in an efficient biodiesel production process.

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Section: Introductionmentioning

confidence: 99%

Glycerol-Free Biodiesel via Catalytic Interesterification: A Pathway to a NetZero Biodiesel Industry

Youssef,

Khaled,

Aboelazayem

et al. 2024

Sustainability

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“…Unsupported and γ-Al 2 O 3 -supported SnO catalysts have been investigated as heterogeneous Lewis acid catalysts for the interesterification of rapeseed oil with methyl acetate [ 37 , 38 ]. With an unsupported catalyst, 90% and 70% yield of FAME and triacetin, respectively, was obtained after 4 h at 210 °C by using 1:40 triglyceride to methyl acetate molar ratio and a catalyst loading of 0.69 mol/mol SnO:oil.…”

Section: Introductionmentioning

confidence: 99%

“…On these premises, and aiming to optimize the FAEE production process, hybrid Pr-SO 3 H silica catalysts were investigated for the interesterification of glyceryl trioctanoate (GTO) with ethyl acetate (EA) to produce in only one step ethyl octanoate (EO) and its additive triacetin (TA) (Figure 1). Unsupported and γ-Al2O3-supported SnO catalysts have been investigated as heterogeneous Lewis acid catalysts for the interesterification of rapeseed oil with methyl acetate [37,38]. With an unsupported catalyst, 90% and 70% yield of FAME and triacetin, respectively, was obtained after 4 h at 210 °C by using 1:40 triglyceride to methyl acetate molar ratio and a catalyst loading of 0.69 mol/mol SnO:oil.…”

Section: Introductionmentioning

confidence: 99%

Interesterification of Glyceryl Trioctanoate Catalyzed by Sulfonic Silica-Based Materials: Insight into the Role of Catalysts on the Reaction Mechanism

et al. 2023

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In the present work, the acid-catalyzed interesterification of glyceryl trioctanoate (GTO) with ethyl acetate was investigated as a model reaction for the one-step production of biofuel and its additives. The activity of heterogeneous acid catalysts, such as silica-based propyl-sulfonic ones, was evaluated. Propyl-sulfonic groups were grafted on both amorphous and mesoporous silica oxide (SBA-15, KIT-6) using different functionalization processes and characterized by N2 adsorpion–desorption isotherm (BET), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), attenuated total reflectance–Fourier transform infrared (ATR-FTIR) spectroscopy, and potentiometric titration. During the optimization of the reaction conditions with the most active catalyst (Am-Pr-SO3H), it was shown that the addition of ethanol allowed a total conversion of GTO together with 89% and 56% yield of ethyl octanoate and triacetin, respectively. The catalytic performance is strictly correlated to the catalyst features, in terms of both the acid capacity and the porous structure. Moreover, the catalytic performance is also affected by a synergistic mechanism between silanols and Pr-SO3H groups towards the ‘silanolysis’ of ethyl acetate. The overall results show that the presence of ethanol, the reaction time, and the amount of catalyst shifts the reaction towards the formation of the biofuel mixture composed by ethyl octanoate and triacetin.

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Grinding Performances of Al2O3/SiC Mixed Nanofluid MQL with Different Mixratio

2023

Thermodynamic Mechanism of MQL Grinding With Nano Bio-Lubricant

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Interesterification of triglycerides with methyl acetate for biodiesel production using a cyclodextrin-derived SnO@γ-Al2O3 composite as heterogeneous catalyst

Cited by 13 publications

References 68 publications

Glycerol-Free Biodiesel via Catalytic Interesterification: A Pathway to a NetZero Biodiesel Industry

Glycerol-Free Biodiesel via Catalytic Interesterification: A Pathway to a NetZero Biodiesel Industry

Interesterification of Glyceryl Trioctanoate Catalyzed by Sulfonic Silica-Based Materials: Insight into the Role of Catalysts on the Reaction Mechanism

Grinding Performances of Al2O3/SiC Mixed Nanofluid MQL with Different Mixratio

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