A carbon black ws impregnated with 6 wt% iron using an aqueous solution of iron nitrate. The impregnated carbon was initially dried at 125 C. The effect of heating of the iron oxide phase was investigated at temperatures between 200 and 600 C using Mossbauer spectroscopy. All heat treatments were done in an oxygen-containing atmosphere. Ferrihydrite is formed and is stable at and below a temperature of 300 C. At 600 C small particles of maghemite is the dominant iron oxide. A transformation reaction is suggested.
|Title of host publication||Proc. ICAME'95|
|Place of Publication||Bologna|
|Publication status||Published - 1996|
|Event||International Conference on the Applications of the Mössbauer Effect - Rimini, Italy|
Duration: 10 Sep 1995 → 16 Sep 1995
|Conference||International Conference on the Applications of the Mössbauer Effect|
|Period||10/09/1995 → 16/09/1995|