Thermoanalysis as a tool for investigation of the formation of co-precipitated catalysts, with Fe-containing systems as an example

A series of studies have been made on the process of formation of catalytic systems based on ferric oxide using thermoanalysis methods, namely, differential scanning calorimetry, thermogravimetric analysis, X-ray diffraction analysis and dilatometry in static conditions in air atmosphere in non-isothermic conditions. The influence of the aluminium oxide content of the co-precipitated system on the course of the dehydration and crystallisation processes was also examined. The dynamics of the ferric oxide formation processes have been demonstrated. The activation energies of the different steps of the process have been calculated.