Na-CaO/MgO dolomites used as heterogeneous catalysts in canola oil transesterification for biodiesel production

D. Murguía-Ortiz, I. Cordova, M. E. Manriquez, E. Ortiz-Islas, R. Cabrera-Sierra, J. L. Contreras, B. Alcántar-Vázquez, M. Trejo-Rubio, J. T. Vázquez-Rodríguez, L. V. Castro

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Abstract

Mexican dolomites were doped with sodium nitrate and calcined at 900 °C to generate the corresponding CaO/MgO and Na-CaO/MgO mixed metal oxides. The resulting oxides were tested with regard to the catalytic transesterification of commercial canola oil in a batch reactor for biodiesel production. The catalysts were characterized using several spectroscopic and physicochemical techniques. Among all catalysts, Na-CaO/MgO effected the highest conversion rate, at 95.4%. The experimental catalytic parameters were processed in a nonlinear program to obtain the optimal theoretical conversion rate of 97.46%, consistent with the experimental results.

Original languageEnglish
Article number129587
JournalMaterials Letters
Volume291
DOIs
StatePublished - 15 May 2021

Keywords

  • Biodiesel
  • Dolomite
  • Optimization
  • Transesterification

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