Preprint Article Version 1 This version is not peer-reviewed

Catalytic Activity of Srilankite Nanoparticles in the Esterification of Oleic Acid

Version 1 : Received: 7 July 2020 / Approved: 8 July 2020 / Online: 8 July 2020 (18:20:15 CEST)

How to cite: Berrones-Hernández, R.; Trejo-Hernández, G.; Pérez-Luna, Y.D.C.; Sánchez-Roque, Y.; Rojas-Blanco, L.; Zamudio-Torres, I.; Figueroa-Ramírez, S.J.; Pérez-Hernández, G.; Ramírez-Morales, E. Catalytic Activity of Srilankite Nanoparticles in the Esterification of Oleic Acid. Preprints 2020, 2020070158 (doi: 10.20944/preprints202007.0158.v1). Berrones-Hernández, R.; Trejo-Hernández, G.; Pérez-Luna, Y.D.C.; Sánchez-Roque, Y.; Rojas-Blanco, L.; Zamudio-Torres, I.; Figueroa-Ramírez, S.J.; Pérez-Hernández, G.; Ramírez-Morales, E. Catalytic Activity of Srilankite Nanoparticles in the Esterification of Oleic Acid. Preprints 2020, 2020070158 (doi: 10.20944/preprints202007.0158.v1).

Abstract

This work shows the results obtained in the synthesis of srilankite nanoparticles, (Zr, Ti)O2, and TiO2 anatase, both catalysts presented an admix of phases, anatase/rutile, and srilankite/rutile, respectively. Their performance in the production of biodiesel through the esterification of oleic acid was evaluated. The catalysts were obtained using the sol-gel process and sulfated via the impregnation method. The samples were characterized using X-ray diffraction (XRD), scan electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and Fourier-Transform Infrared Spectroscopy (FTIR) to analyze the properties in its crystalline structure, morphology, and chemical composition. Its efficiency during the esterification reaction was measured based on the decrease in free fatty acids (FFA). FFA, oleic acid was added at different weight percentages (1%, 3%, and 5% w/w). The time of reaction was 6 hours at 55 °C and the catalyst with better performance was the sulfated Srilankite/rutile, reaching a maximum conversion of up to 90%.

Subject Areas

Esterification; Heterogeneous catalyst; Biodiesel; Srilankite; Anatase; Nanoparticles

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