Effect of the partial pressure of water vapour on the thermal decomposition of γ-FeOOH and on the dispersity of the solid decomposition products

Reactivity of finely dispersed iron (III) oxides and oxide hydroxides in solid-state reactions

“…An earlier study of the behaviour of hydrohematite and goethite during heating [6] revealed enhanced sensitivity of the particles of these phases to low-temperature sintering. The catalytic effect of water vapour on this process has been also described in the literature [10]. Therefore, it can be expected that the desactivation of e-Fe203 resulting from the low-temperature sintering phenomena proceeds simultaneously with the reaction with K2CO3, and this process can lower the reactivity of the hematite samples.…”