Some recent results on the correlation of nano-structural and redox properties in ceria-zirconia mixed oxides

Effect of preparation procedure on the formation of nanostructured ceria–zirconia mixed oxide catalysts for ethyl acetate oxidation: Homogeneous precipitation with urea vs template-assisted hydrothermal synthesis

“…Transition of cubic to tetragonal fluorite phase occurs with increasing the zirconium content [35] and the degree of distortion of the cubic fluorite structure strongly depends on the synthesis method, particle size and thermal treatment [36]. Several methods, such as precipitation, microemulsion, microwave, hydrothermal synthesis including also supercritical water, flame spray, sol-gel, high temperature solid state reaction, high energy ball milling, and combustion synthesis have been applied to synthesize mixed oxide CeO 2 -ZrO 2 materials [ [8,16,30,[37][38][39][40] and Refs. therein].…”

Tuning the Integration Rate of Ce(Ln)O2 Nanoclusters into Nanoparticulated ZrO2 Supports: When the Cation Size Matters

“…Since the middle of the 1990s, cerium-zirconium mixed oxides (Ce x Zr 1−x O 2 ) have been extensively employed in the field of heterogeneous catalysis either, as catalysts on their own, or much more frequently, as supports of a variety of metal-containing catalytic active phases [1,2]. Such an extensive use is chiefly ascribable to their improved thermal stability, surface area, and redox properties (i.e., reducibility and the coupled oxygen storage capacity, OSC), as compared to pure ceria (CeO 2 ), another oxide commonly found in the formulations of catalysts [3][4][5]. In fact, because of these advantages, cerium-zirconium mixed oxides successfully replaced pure ceria as the oxygen buffer component in the latest generations of three-way catalysts (TWC) in internal combustion engine vehicles, for the removal of post-combustion pollutants [6][7][8].…”

Synthesis and Characterization of Nanometer Ce0.75Zr0.25O2Powders by Solid-State Chemical Reaction Method

“…The nanostructure, Ce 1−x Zr x O 2 materials have drawn extraordinary research interests in recent years due not only to its good mechanical and electrical properties [1][2][3][4], but also to the potentials of applications in various fields, such as the catalysts [5][6][7], solid oxide electrolyte materials [8][9][10], and advanced ceramics [11][12][13], There have been many methods to prepare nano-Ce 1−x Zr x O 2 solid solution, such as coprecipitation [14,15], sol-gel [16,17], high-temperature calcinations [18], high-energy mechanical milling, and hydrothermal method [19]. However, the procedure of the above approaches is so complicated that they are inevitably limited to apply to industrial and commercial situations.…”