scholarly journals Catalytic behavior of La0.6Sr0.4Co0.8Fe0.2O3 Perovskite-type Oxide During Methane Combustion

1997 ◽  
Vol 1997-40 (1) ◽  
pp. 983-992
Author(s):  
C. ATHANASIOU
Keyword(s):  
Methane Combustion ◽  
Catalytic Behavior ◽  
Perovskite Type Oxide ◽  
Perovskite Type

Methane combustion and CO oxidation on LaAl1−xMnxO3 perovskite-type oxide solid solutions

2003 ◽  
Vol 43 (4) ◽  
pp. 397-406 ◽  
Author(s):  
S Cimino ◽  
L Lisi ◽  
S De Rossi ◽  
M Faticanti ◽  
P Porta
Keyword(s):  
Co Oxidation ◽  
Solid Solutions ◽  
Methane Combustion ◽  
Perovskite Type Oxide ◽  
Perovskite Type

The Structures and Preparation Methods of Perovskite-Type Oxide Catalysts for Natural Gas Catalytic Combustion

2013 ◽  
Vol 448-453 ◽  
pp. 2917-2921
Author(s):  
Jia Nan Hu ◽  
Ya Qin Bai ◽  
Rui Fu ◽  
Chun Li ◽  
Wen Yan Zhao ◽  
...  
Keyword(s):  
Catalytic Combustion ◽  
Low Cost ◽  
Methane Combustion ◽  
Oxide Catalysts ◽  
Preparation Methods ◽  
Perovskite Catalyst ◽  
Perovskite Type Oxide ◽  
Combustion Technology ◽  
Lower Temperature ◽  
Perovskite Type

Catalytic combustion technology can effectively reduce the temperature of the combustion reaction and significantly inhibit the formation of NOx. Perovskites catalyst materials have high stability, varied chemical composition, and low cost etc. A combination of catalytic combustion technology and perovskite catalyst materials has great significance for energy industry and environment protection. However, improving lower temperature catalytic activity and high temperature thermostability performance of perovskite catalyst is still major problem. Some researchers have improved the activity and stability of perovskite catalysts for methane combustion by different preparation methods. The structure and preparation methods of perovskite-type oxide catalysts are presented.

First-principles Studies of Phase Stability and the Neutral Atomic Vacancies in LiNbO3, NaNbO3 and KNbO3

2005 ◽  
Vol 902 ◽  
Author(s):  
Akio Shigemi ◽  
Takahiro Wada
Keyword(s):  
Enthalpy Of Formation ◽  
Density Functional ◽  
Formation Energy ◽  
Type Structure ◽  
Enthalpies Of Formation ◽  
Functional Formalism ◽  
Reducing Atmosphere ◽  
Perovskite Type Oxide ◽  
Formation Energies ◽  
Perovskite Type

AbstractWe overall evaluated the enthalpies of formation and the formation energies of neutral vacancies in ANbO3 (A = Li, Na, K) using a plane-wave pseudopotential method within a density functional formalism. The LiNbO3 phase with the LiNbO3-type structure was confirmed to have lower enthalpy of formation than that with perovskite- or ilmenite-type structure. The NaNbO3 (R3c) and KNbO3 (Bmm2 and R3m) phases with the lowest symmetry were found to have the lowest enthalpy of formation. The formation energy of a A vacancy was found to be the lowest under an oxidizing atmosphere and that of an O vacancy was found to be the lowest under a reducing atmosphere. The formation energy of a Nb vacancy was the highest under both oxygen-rich and -poor conditions. These results are in agreement with the empirical rule that B site defects in perovskite-type oxide do not exist.

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