Effect of Ce–Zr mixed oxides on the thermal stability of transition aluminas at elevated temperature

Dynamic oxygen storage and release over Mn0.1Ce0.9Ox and Mn0.1Ce0.6Zr0.3Ox complex compounds and structural characterization

“…Many papers reported that the addition of ZrO 2 to ceria leaded to improvements in ceria's OSC, redox property and thermal resistance [4][5][6][7][8]. In addition, recent studies have shown that formation of mixed oxides of ceria with cations such as Al 3+ , Y 3+ , La 3+ , etc., enhanced oxygen storage properties of ceria and the so-formed mixed oxides also exhibited good thermal stability [9][10][11][12][13].…”

Effect of preparation method on the surface and redox properties of Ce0.67Zr0.33O2 mixed oxides

“…Therefore, CeO 2 -based materials have been pervasively used as an oxygen storage material associated to the redox couple of Ce 4+ /Ce 3+ . The introduction of ZrO 2 into the ceria lattice significantly increases oxygen storage capacity (OSC) [1][2][3] and thermal resistance [4][5][6]. While the OSC of ceria depends directly on its surface area, CeO 2 ZrO 2 mixed oxides are able to maintain better OSC despite severe sintering [7].…”

Thermal deactivation of Pt/Rh commercial automotive catalysts

“…Alumina, the major washcoat component, is used for its high surface area and thermal stability. After 12 h, some diffraction lines corresponding to different alumina phases were identified: ı (32 • ; 45 • ), Â (37 • ) and˛(26 • ; 57.5 • ; 68 • ), according to Wu et al [17] and Iglesias-Juez et al [18]. Pure ␥-Al 2 O 3 starts its transition to lower area phases at around 800 • C, but only above 1000 • C is the non-porous ␣-Al 2 O 3 phase is formed [5,18].…”