Perrhenate sodalite growth from alkali silicate melts by noble metal catalysis
Perrhenate sodalite (Na8Al6Si6Re2O32) which contains the perrhenate anion (ReO4−) has been synthesised in equilibrium with Na–Fe-rich aluminosilicate melt and Re metal at 1100 °C and 500 MPa. Quenched glasses contain a homogeneous distribution of nepheline and magnetite, whereas sodalite only forms a crust on noble metal surfaces (Pt, Pt–Rh, Ag–Pd, and Re) in contact with the glass. The sodalite have been characterised by wavelength-dispersive X-ray spectroscopy and Raman spectroscopy. The...[Show more]
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|Source:||SN Applied Sciences|
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