A Porous Tungsten Substrate for Catalytic Reduction of Hydrogen by Dealloying of a Tungsten–Rhenium Alloy in an Aqueous Solution of Hydrochloric Acid

Selective dissolution of a tungsten (85 wt.%)–rhenium (15 wt.%) alloy with rhenium in hydrochloric acid at the temperature 298 K and anodic polarization modes was carried out to develop porous catalytic substrate recycle rare metals. The parameters effective selective tungsten–rhenium alloy, including differences applied potentials electrolyte composition, were found. It established that samples possess smallest average pore size after being exposed for 6000 s. obtained characterized by X-ray diffraction scanning electron spectroscopy. A thermodynamic description processes occurring during binary proposed. In course work, selectivity coefficient determined using an fluorescence wave-dispersion spectrometer XRF-1800. existence bimodal structure on surface dealloying proved.