Enhanced Thermal Stability and Oxygen Storage Capacity for CexZr1-xO2(x= 0.4−0.6) Solid Solutions by Hydrothermally Homogenous Doping of Trivalent Rare Earths

2007 ◽  
Vol 111 (2) ◽  
pp. 787-794 ◽  
Author(s):  
Rui Si ◽  
Ya-Wen Zhang ◽  
Li-Min Wang ◽  
Shi-Jie Li ◽  
Bing-Xiong Lin ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solid Solutions ◽  
Rare Earths ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage

Effect of grain size on thermal stability and oxygen storage capacity of Ce0.17Zr0.73La0.02Nd0.04Y0.04O2 solid solutions

2019 ◽  
Vol 37 (2) ◽  
pp. 178-184 ◽  
Author(s):  
Yuhui Zhang ◽  
Meisheng Cui ◽  
Yongke Hou ◽  
Xiaowei Huang ◽  
Yongqi Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Grain Size ◽  
Solid Solutions ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage

Autothermal Reforming of Propane Over Ni Catalysts Supported on a Variety of Perovskites

2007 ◽  
Vol 7 (11) ◽  
pp. 4013-4016 ◽  
Author(s):  
SeungSoo Lim ◽  
DongJu Moon ◽  
JongHo Kim ◽  
YoungChul Kim ◽  
NamCook Park ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Storage Capacity ◽  
Flow Reactor ◽  
Oxygen Storage Capacity ◽  
Autothermal Reforming ◽  
Oxygen Storage ◽  
Hydrogen Yield ◽  
Impregnation Method ◽  
Ni Catalysts ◽  
Atmospheric Flow

Autothermal reforming of propane for hydrogen over Ni catalysts supported on a variety of perovskites was performed in an atmospheric flow reactor. Perovskite is known for its higher thermal stability and oxygen storage capacity, but catalytic activity of itself is low. A sites of the ABO3 structured perovskites were occupied by La while B sites by one of Fe, Co, Ni, and Al by citrate method. The composition of the reactant mixture was H2O/C/O2 = 8.96/1.0/1.1. The changes in the states of the catalysts after reaction were analyzed by XRD, TPD, and TGA. Ni/LaAlO3 catalyst maintained the perovskite structure after reaction. It showed higher hydrogen yield and thermal stability compared to those of the catalysts with Fe, Co, or Ni in B sites. Catalysts prepared by deposition-precipitation (DP) method showed higher activity than those prepared by impregnation method, presumably due to the smaller sizes of the NiO crystal particles.

Overview: Modification of Cerium Oxide in Three-Way Catalysts

2014 ◽  
Vol 575 ◽  
pp. 97-102 ◽  
Author(s):  
M. Nazri Abu Shah ◽  
S. Hanim Md Nor ◽  
Kamariah Noor Ismail ◽  
Abdul Hadi
Keyword(s):  
Thermal Stability ◽  
Rare Earth ◽  
Metal Oxides ◽  
Cerium Oxide ◽  
Storage Capacity ◽  
Rare Earth Metals ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
Alkaline Metals ◽  
Three Way Catalyst

An overview of modification of cerium oxide, CeO2which is employed in the three-way catalyst (TWCs) is presented in this article. The modifications of cerium oxide, CeO2incorporated with the metal oxides for the improvement of thermal stability, microstructure and oxygen storage capacity (OSC) are discussed. In view of that, the types of metal oxide are grouped into transition metals, rare earth metals, and alkaline metals and the effect of each group into cerium oxide, CeO2are elaborated.

Panoscopic alloying of cobalt in CeO2–ZrO2 solid solutions for superior oxygen-storage capacity

2016 ◽  
Vol 113 ◽  
pp. 206-212 ◽  
Author(s):  
Seung Hak Song ◽  
Jooho Moon ◽  
Jeong Hun Kim ◽  
Jongsup Hong ◽  
Jong-Ho Lee ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage

Pt/porous nanorods of ceria as efficient high temperature catalysts with remarkable catalytic stability for carbon dioxide reforming of methane

2015 ◽  
Vol 3 (35) ◽  
pp. 18074-18082 ◽  
Author(s):  
Zhiyun Zhang ◽  
Jing Li ◽  
Wei Gao ◽  
Yuanyuan Ma ◽  
Yongquan Qu
Keyword(s):  
Carbon Dioxide ◽  
Thermal Stability ◽  
Catalytic Activity ◽  
Storage Capacity ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
High Catalytic Activity ◽  
Carbon Dioxide Reforming ◽  
Catalytic Stability ◽  
High Oxygen Storage Capacity

Pt/porous nanorods of CeO2 with a large surface area, a high oxygen storage capacity and a remarkable thermal stability exhibit high catalytic activity and stability for the carbon dioxide reforming of methane reaction at 800 °C.

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