The cubic-to-hexagonal phase transition of cerium oxide particles: dynamics and structure
Jan Höcker, Jon-Olaf Krisponeit , Thomas Schmidt, Jens Falta and Jan Ingo Flege . Nanoscale (2017) 9 , 9352-9358 http://dx.doi.org/10.1039/C6NR09760J Cerium oxide is often applied in today's catalysts [...] particles on ruthenium(0001) at high temperatures of 700°C in ultra-high vacuum. Our results demonstrate that the reduction from CeO 2 to cubic Ce 2 O 3 proceeds via ordered intermediary phases. The final reduction [...] reduction step from cubic to hexagonal Ce 2 O 3 is accompanied by a lattice expansion, the formation of two new surface terminations, a partial dissolution of the cerium oxide particles, and a massive