High oxygen storage capacity and enhanced catalytic performance of NiO/NixCe1−xO2−δ nanorods: synergy between Ni-doping and 1D morphology

RSC Advances ◽  
2015 ◽  
Vol 5 (67) ◽  
pp. 54571-54579 ◽  
Author(s):  
Araceli Romero-Núñez ◽  
Gabriela Díaz
Keyword(s):  
Storage Capacity ◽  
Chemical Properties ◽  
Oxygen Storage Capacity ◽  
Catalytic Performance ◽  
Oxygen Storage ◽  
Doped Ceria ◽  
Ni Doping ◽  
Specific Composition ◽  
Physical Chemical ◽  
High Oxygen Storage Capacity

NiO/Ni-doped ceria nanorods have been synthesized. Their unique structure combines specific composition and 1D morphology, which provide great improvements in their physical chemical properties.

scholarly journals Zr-Ce-Pr-O Mixed Oxide Phases with High Oxygen Storage Capacity (OSC)

2009 ◽  
Vol 73 (4) ◽  
pp. 262-267 ◽  
Author(s):  
Tadatoshi Murota ◽  
Kosuke Sogawa ◽  
Shinya Otsuka-Yao-Matsuo ◽  
Takahisa Omata
Keyword(s):  
Mixed Oxide ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
High Oxygen ◽  
Oxygen Storage ◽  
Oxide Phases ◽  
High Oxygen Storage Capacity

Oxygen Storage Capacity of CexZr1-xO2 (0.4≤x≤0.8) Solid Solution Using Thermogravimetric Analysis

2013 ◽  
Vol 747 ◽  
pp. 579-582 ◽  
Author(s):  
N. Shanmuga Priya ◽  
Chandramohan Somayaji ◽  
S. Kanagaraj
Keyword(s):  
Solid Solution ◽  
Storage Capacity ◽  
Mixed Oxides ◽  
High Surface ◽  
High Surface Area ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
Co Precipitation ◽  
Good Number ◽  
High Oxygen Storage Capacity

The property of high oxygen storage capacity (OSC) of Ceria is an important component in three-way catalysts (TWC), which depends on the low reduction temperature, high surface area and stable crystalline structure. These are required to be improved using mixed oxides for the increased OSC of TWC. Though a good number of literature is available in Ceria-Zirconia mixed oxides, optimization of the composition of oxides based on OSC is very much limited. Hence, an attempt was made to optimize the composition of CexZr1-xO2 (0.4 x 0.8) (CZ) based on the OSC using thermogravimetric technique. The CZ solid solution was prepared by co-precipitation (COP) method using Ceria nitrate, and Zirconia oxy-choloride precursors, where the freshly prepared metal hydroxide precipitates were continuously stirred at 45 °C for 60 minutes followed by washing and drying to obtain the nanosized CZ particles. The formation of single nanocrystallite with less than 8 nm size solid solution was identified by XRD, and the same was confirmed by Micro Raman studies. It is observed that the trend of OSC in CZ solid solution was based on the ratio of Ce to Zr in the starting aqueous solution, where the OSC was found to be maximum at 1.5 and the corresponding OSC of the compound was about 0.14 μmol per gram of Ceria.

Cu-Doped Zr-Ce-Pr-O Mixed Oxide Phases with High Oxygen Storage Capacity (OSC)

2009 ◽  
Vol 73 (4) ◽  
pp. 268-274 ◽  
Author(s):  
Tadatoshi Murota ◽  
Kosuke Sogawa ◽  
Shinya Otsuka-Yao-Matsuo ◽  
Takahisa Omata
Keyword(s):  
Mixed Oxide ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
High Oxygen ◽  
Oxygen Storage ◽  
Oxide Phases ◽  
High Oxygen Storage Capacity
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