An adapted magnetite synthesis strategy
| Autor: | José Domingos Fabris, Alex Martins Ramos, Genilson Pereira Santana |
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| Jazyk: | portugalština |
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Química Nova v.31 n.2 2008 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ Química Nova, Volume: 31, Issue: 2, Pages: 430-432, Published: 2008 |
| Popis: | Chemical reactions in the solid state are often not included in undergraduate chemistry curricula, due to requirements for special laboratory facilities such as ovens and precision weighing balances. This work aims to describe novel and relatively simple magnetite chemical syntheses in dry medium, which could also be used as an alternative for freshmen chemistry experiments. The proposed reaction was carried out in a muffle furnace by heating (i) a sol-gel preparation and (ii) natural hematite, under nitrogen atmosphere at 400 oC. The synthesized magnetite was characterized with powder X-ray diffraction and Mossbauer spectroscopy. Results show that magnetite samples have chemical properties as well as crystalline structure quite similar to those of standard natural magnetite. |
| Databáze: | OpenAIRE |
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