Titanium-doped γ-Fe2O3: Reduction and oxidation properties
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- Ayub, I., Berry, F.J., Crabb, E. et al. Journal of Materials Science (2004) 39: 6921. doi:10.1023/B:JMSC.0000047533.94176.4a
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Titanium-doped γ-Fe2O3 has been prepared by the calcination of a solid formed by the addition of aqueous ammonia to an aqueous solution of titanium- and iron-containing salts and boiling the precipitate under reflux. As compared to pure γ-Fe2O3 made by similar methods, titanium-doped γ-Fe2O3 showed a higher surface area and a greater stability to reduction, thermal conversion to an α-Fe2O3-related structure and the maintenance of a higher surface area during oxidation-reduction cycling.