Nanosized CeO2–SiO2, CeO2–TiO2, and CeO2–ZrO2 Mixed Oxides: Influence of Supporting Oxide on Thermal Stability and Oxygen Storage Properties of Ceria

2005 ◽  
Vol 9 (3) ◽  
pp. 155-171 ◽  
Author(s):  
Benjaram M. Reddy ◽  
Ataullah Khan
Keyword(s):  
Thermal Stability ◽  
Mixed Oxides ◽  
Oxygen Storage ◽  
Storage Properties

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.

Role of Surface Adsorption in Fast Oxygen Storage/Release of CeO2 - ZrO2 Mixed Oxides

2007 ◽  
Vol 25 (4) ◽  
pp. 416-421 ◽  
Author(s):  
Xiaodong Wu ◽  
Qing Liang ◽  
Xiaodi Wu ◽  
Duan Weng
Keyword(s):  
Mixed Oxides ◽  
Surface Adsorption ◽  
Oxygen Storage

An experimental and computational investigation of the oxygen storage properties of BaLnFe2O5+δ and BaLnCo2O5+δ (Ln = La, Y) perovskites

2014 ◽  
Vol 2 (7) ◽  
pp. 2397 ◽  
Author(s):  
Jonathan W. Lekse ◽  
Sittichai Natesakhawat ◽  
Dominic Alfonso ◽  
Christopher Matranga
Keyword(s):  
Oxygen Storage ◽  
Computational Investigation ◽  
Storage Properties
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