Reactivity of ferrous and ferric ions has been investigated by means of re dox potential measurements at room temperature and at 85°C. Results show that in the pH range 6.5-8.0 the prevailing redox system at room temperature is ra presented by Fe(OH)3/Fe2+; upon heating, the system transforms to Fe304/Fe2+ by a reaction which does not seem to involve the Schikorr reaction. The change of composition of the solid phase is interpreted as a phase transformation of Fe(OH)3 due to an interaction with Fe2+.

Temperature induced phase transformation of metastable Fe(OH)3 in the presence of ferrous ions / S. Ardizzone, L. Formaro. - In: MATERIALS CHEMISTRY AND PHYSICS. - ISSN 0254-0584. - 8:2(1983), pp. 125-133.

Temperature induced phase transformation of metastable Fe(OH)3 in the presence of ferrous ions

S. Ardizzone
Primo
;
L. Formaro
Ultimo
1983

Abstract

Reactivity of ferrous and ferric ions has been investigated by means of re dox potential measurements at room temperature and at 85°C. Results show that in the pH range 6.5-8.0 the prevailing redox system at room temperature is ra presented by Fe(OH)3/Fe2+; upon heating, the system transforms to Fe304/Fe2+ by a reaction which does not seem to involve the Schikorr reaction. The change of composition of the solid phase is interpreted as a phase transformation of Fe(OH)3 due to an interaction with Fe2+.
IRON COMPOUNDS
Settore CHIM/02 - Chimica Fisica
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/186784
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