| Autor: |
Vannia Cristina dos Santos-Durndell, Tailor Machado Peruzzolo, Geani Maria Ucoski, Luiz Pereira Ramos, Shirley Nakagaki |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Biofuel Research Journal, Vol 5, Iss 2, Pp 806-812 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2292-8782 |
| DOI: |
10.18331/BRJ2018.5.2.4 |
| Popis: |
Solid magnetic nanoparticles (magnetite = Mag) composed of Fe3O4 and magnetite coated with silica (Fe3O4/SiO2 = Mag/Si) were prepared from inexpensive starting materials. The catalytic activity of the solids was investigated for palmitic acid esterification with methanol under solvothermal conditions. Both pure Fe3O4 (Mag) and silica-coated (Mag/Si) nanoparticles exhibited high catalytic activities and were easy to recover from the reaction environment using an external magnet. Furthermore, the magnetic nanoparticle catalysts were reused without significant loss of catalytic activity and showed high durability in typical acid-catalyzed reactions. XRD and SEM analyses were conducted before and after esterification, showing almost identical particle distribution in both fresh and reused catalysts. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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