High-performance magnetite nanoparticles catalyst for biodiesel production: Immobilization of 12-tungstophosphoric acid on SBA-15 works effectively

Pingbo Zhang, Peng Liu, Mingming Fan, Pingping Jiang and Agus Haryono

Renewable Energy, 2021, vol. 175, issue C, 244-252

Abstract: Magnetic mesoporous solid acid catalysts, designed as Fe3O4@SBA-15@HPW and Fe3O4@SBA-15-NH2-HPW, were prepared for the production of biodiesel by the transesterification of palm oil with methanol. The magnetic mesoporous carrier was modified by two different methods: post-gifting method and impregnation method. The structure of the catalysts was characterized by SEM, TEM, XRD, FT-IR, VSM, Pyridine-FT-IR, N2 adsorption-desorption and TGA. The results indicated that they all had ordered mesoporous and excellent paramagnetic. Both Fe3O4@SBA-15@HPW and Fe3O4@SBA-15-NH2-HPW had high content of Brønsted acid sites due to the loading of 12-tungstophosphoric acid, which made the two catalysts very active. Particularly, Fe3O4@SBA-15-NH2-HPW was very efficient in the transesterification of palm oil with methanol and gave a more than 91% biodiesel yield when the reaction was carried out at 150 °C with a 4 wt% catalyst amount at 20:1 methanol/oil molar ratio for 5 h Fe3O4@SBA-15-NH2-HPW prepared by the grafting method exhibited higher reusability, and the yield of biodiesel was more than 80% after 6 times cycles, which made the catalyst have an excellent industrial application prospect.

Keywords: Magnetic; Mesoporous solid acid; Biodiesel; Transesterification (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:175:y:2021:i:c:p:244-252

DOI: 10.1016/j.renene.2021.05.033

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