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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064

Abstract

SANTANA, Genilson Pereira; RAMOS, Alex Martins  and  FABRIS, José Domingos. An adapted magnetite synthesis strategy. Quím. Nova [online]. 2008, vol.31, n.2, pp.430-432. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422008000200043.

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 Mössbauer spectroscopy. Results show that magnetite samples have chemical properties as well as crystalline structure quite similar to those of standard natural magnetite.

Keywords : iron oxides; Mössbauer spectroscopy; X-ray diffraction.

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