Structure of amorphous Fe(III) hydroxides and their ageing products |
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| Authors: | T A Kriger O P Krivoruchko and R A Buyanov |
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| Institution: | (1) Institute of Catalysis, Novosibirsk, USSR |
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| Abstract: | X-ray analysis has revealed that at pH=7.5–12.0 similar amorphous Fe(III) hydroxides are formed. Their structural peruliarity is the presence of local regions with ordered arrangement of atoms typical for  -FeOOH in the volume of primary particles. Ageing at pH=7.5 and 353 K leads to structure rearrangement to -Fe2O3.
   pH 7,5–12,0                      Fe(III).         , -FeOOH.  pH 7,5 353  -Fe2O3.
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