Thermochemical cycles are a very attractive way to obtain
hydrogen by water splitting reaction without produces
greenhouse gases. The so-called Sulphur-Iodine cycle is one of the most investigated cycles. The decomposition of H2SO4 to
produce SO2 is the reaction with the highest energy demand in the S-I cycle and it shows a large kinetic barrier.
In this paper we present some experimental results on the
thermal dissociation of sulphuric acid and we compare them
with numerical simulations.
The effect of ferric oxide (Fe2O3), used as catalyst, have been tested to evaluate its effect on the dissociation efficiency at various temperatures. When catalyst is used, a large onset temperature decrease for the activation of this reaction has been achieved