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Open AccessFeature PaperArticle

Synthesis of NdAlO3 Nanoparticles and Evaluation of the Catalytic Capacity for Biodiesel Synthesis

1
Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Avenida Universidad s/n, Cuernavaca 62210, MOR, Mexico
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Tecnológico Nacional de México—Instituto Tecnológico de Zacatepec, Calzada Instituto Tecnológico 27, Zacatepec 62780, MOR, Mexico
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CIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Cuernavaca 62209, MOR, Mexico
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Corrosion y Protección (CyP), Buffon 46, Mexico City 11590, Mexico
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(11), 1545; https://doi.org/10.3390/nano9111545
Received: 19 August 2019 / Revised: 19 September 2019 / Accepted: 23 September 2019 / Published: 30 October 2019
Biodiesel synthesis was carried out via heterogeneous catalysis of canola oil with nanoparticles of a mixed oxide based on rare earths. The catalyst synthesis (NdAlO3) was carried out based on the method proposed by Pechini for the synthesis of nanoparticles. Thermogravimetric analysis-differential thermal analysis (TGA-DTA) analysis was performed on the nanoparticle precursor gel in order to establish the optimum conditions for its calcination, with these being of 800 °C over 24 h. A pure NdAlO3 compound with an approximate size of 100 nm was obtained. The products of the transesterification reaction were analyzed using gas chromatography, FTIR, and NMR. The optimum reaction conditions were determined, namely, the temperature effect, reaction time, methanol:oil mass ratio, and recyclability of the catalyst. These studies showed the following optimal conditions: 200 °C, 5 h, methanol:oil mass ratio of 6:1, and a constant decrease in the catalytic activity of the catalyst was observed for up to six reuses, which later remained constant at around a 50% conversion rate. The maximum biodiesel yield obtained with the optimum conditions was around 75%. Analysis of the reaction products showed that the residual oil showed a chemical composition different from that of the source oil, and that both the biodiesel and glycerol obtained were of high purity. View Full-Text
Keywords: NdAlO3; nanoparticles; canola oil; heterogeneous catalysis; transesterification NdAlO3; nanoparticles; canola oil; heterogeneous catalysis; transesterification
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Dionicio-Navarrete, M.; Arrieta-Gonzalez, C.D.; Quinto-Hernandez, A.; Casales-Diaz, M.; Zuñiga-Diaz, J.; Porcayo-Calderon, J.; Martinez-Gomez, L. Synthesis of NdAlO3 Nanoparticles and Evaluation of the Catalytic Capacity for Biodiesel Synthesis. Nanomaterials 2019, 9, 1545.

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