An adapted magnetite synthesis strategy

Química Nova

Universidade Federal do Amazonas, Manaus, Brasil¹  Ramos, Alex Martins¹  Santana, Genilson Pereira¹  Universidade Federal de Minas Gerais, Belo Horizonte, Brasil¹  Fabris, José Domingos¹ 

关键词: iron oxides;    Mö;    ssbauer spectroscopy;    X-ray diffraction.;   

DOI  :  10.1590/S0100-40422008000200043

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown