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Schikorr reactions produce iron oxide Fe3O4. This reaction turns iron (II), OH (Fe(OH),2) into iron oxide, II, III (Fe3O4). Anaerobic conditions cause ferrous hydroxide(Fe(OH)2) to oxidize in water and form magnetite or molecular Hydrogen. This process is described in Schikorr’s reaction.
3Fe(OH)2-Fe3O4 + H2 + 2H2O
What is Fe2O3 and Fe3O4 different?
Fe2O3 vs Fe3O4 are two different minerals. Fe2O3 is paramagnetic and has only Fe2+ oxidation while Fe3O4 a ferromagnetic metal with both Fe2++ oxidation.
What are some properties of Iron Oxide Fe3O4?
Fe3O4 is ferrromagnetic and has a Curie Temperature of 858K. The Verwey transition is a phase transition that occurs at 120K. This transition is where there is a discontinuity between the structure, conductivity, and magnetic properties. While many explanations have been suggested, the effect has not been fully understood.
Although it has an electrical resistivity that is higher than iron (96.1% nO/m), Fe3O4’s electrical resistance (0.3 mO/m) is much lower than Fe2O3’s (approx. 10 kO/m). This is due to electron exchange between FeII and FeIII centres in Fe3O4.
Iron Oxide, Fe3O4
Iron oxide, Fe3O4, commonly known as iron black, magnetite and black iron dioxide, can be used for many purposes.
Black pigments are also known as Mars Black, and Iron (II or III) oxide.
It is used as a catalyst during the Haber Process.
It is used to produce the water-gas shifting reaction.
MRI scanning employs Fe3O4 Nanoparticles to contrast them.
It prevents the steel rusting.
It is an element in thermite and is used for cutting steel.
It can also produce special coatings, high-grade magnetic separators and microwave absorption materials.