A facile hydrothermal synthesis of tin doped ceria-zirconia (Ce 0.5Zr0.43Sn0.07O2) solid solutions was carried out using Ce(NH4)2(NO3) 6, Zr(NO3)3·2H2O and SnCl4·5H2O as the starting materials. The synthesized Ce0.5Zr0.43Sn0.07O2 particles were characterized for their oxygen storage capacity (OSC) for automotive catalysis applications. For the characterization, X-ray diffraction, transmission electron microscopy and the Brunauer-Emmet-Teller (BET) technique were employed. The OSC values of all samples were measured using thermogravimetric-differential thermal analysis. Ce0.5Zr 0.43Sn0.07O2 solid solutions with a BET surface area of 246 m2 g-1 exhibited a considerably high OSC of 1425 μmol-O g-1. The incorporation of tin ions in the lattice of the ceria based catalyst greatly enhanced the thermal stability and OSC. The influence of cation radius on the thermal stability and OSC was also discussed.
ASJC Scopus subject areas
- Chemical Engineering(all)