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

Abstract : Particle morphology and surface properties of metal oxides are topics of great importance in the field of heterogeneous catalysis. Herein, we have developed a molecular-colloidal coassembly approach combined with an ultrasonic-assisted precipitation method to fabricate SnO@γ-Al2O3 composites with tuneable pore size and well-defined octahedral-shape crystal structure. The supramolecular assemblies formed between the randomly methylated β-cyclodextrin (RaMeβCD) and Pluronic F127 were employed as template to tailor the size and shape of γ-Al2O3 nanoparticles and direct their assembly almost exclusively on the surface of micrometer-sized SnO single crystals. Results revealed that the cooperative action of the supramolecular template and γ-Al2O3 nanoparticles may have a critical effect on the growth and orientation of SnO microcrystals and ultimately determine their catalytic performance in the interesterification of rapeseed oil with methyl acetate. The compartmentalized SnO@γ-Al2O3 structures could achieve fatty acid methyl esters (FAME) and triacetin (TA) yields of 33.5% and 1.5% respectively after 30 min at 210 °C, exceeding by 38% the FAME yield of the commercial catalyst.
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https://hal-univ-artois.archives-ouvertes.fr/hal-03637570
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Submitted on : Monday, April 11, 2022 - 5:02:29 PM
Last modification on : Tuesday, April 12, 2022 - 3:41:11 AM

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Claudia Prestigiacomo, Martina Biondo, Alessandro Galia, Eric Monflier, Anne Ponchel, et al.. Interesterification of triglycerides with methyl acetate for biodiesel production using a cyclodextrin-derived SnO@γ-Al2O3 composite as heterogeneous catalyst. Fuel, Elsevier, 2022, 321, pp.124026. ⟨10.1016/j.fuel.2022.124026⟩. ⟨hal-03637570⟩

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