Structure and form of solids as ruling factors for their thermochemical reactivity

Article abstract of DOI:10.1007/BF01914585

The role of structural parameters strongly influencing the course of heterogeneous solid-state reactions is established. Owing to the close relationship between the form and reactivity of solids, due emphasis must be given to detailed morphological studies. This allows the derivation of consistent correlations between the reaction mechanism on a microscopic scale and the observed macroscopic changes. Our present interests are focused on the generation of solids with 'tailor-made' specific chemical and physical properties. Starting with suitable precursors and appropriately selected experimental conditions, in particular with reactive gases such as molecular hydrogen, the controlled preparation of, for example, catalytically active finely dispersed metals or alloys, and also binary and ternary metal oxide and sulfide phases is demonstrated. Thermoanalytical techniques are applied in combination with mass spectrometry and gas chromatography.