Beschreibung:
<jats:p>The synthesis of strontium metastannate (SrSnO<jats:sub>3</jats:sub>) has been performed by coupling mechanical activation with thermal activation of SnC<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub>-SrCO<jats:sub>3</jats:sub> mixtures. The solid-state reaction has been studied by TG-DSC analysis and powder X-ray diffraction. By annealing experiments performed on physical mixtures (no mechanical activation) it has been assessed that the formation of SrSnO<jats:sub>3</jats:sub> occurs through the intermediate Sr<jats:sub>2</jats:sub>SnO<jats:sub>4</jats:sub> and is complete only after annealing at 1400 °C. By performing the annealing experiments on activated mixtures it has been established that the formation of SrSnO<jats:sub>3</jats:sub> takes place directly at temperatures between 800 and 1000 °C. The SrSnO<jats:sub>3</jats:sub> samples obtained at 800 and 900 °C show, by TG analysis, mass loss processes that suggest that SrSnO<jats:sub>3</jats:sub> obtained at these temperatures absorbs H<jats:sub>2</jats:sub>O and CO<jats:sub>2</jats:sub> from the air so that its use as gas sensor can be envisaged. This is no longer true for the sample obtained at 1000 °C or above </jats:p>