scholarly journals Excellent kinetics of single-phase Gd-doped ceria fuel electrodes in solid oxide cells

2021 ◽  
Author(s):  
Andreas Nenning ◽  
Manuel Holzmann ◽  
Jürgen Fleig ◽  
Alexander Karl Opitz
Keyword(s):  
High Activity ◽  
Single Phase ◽  
State Of The Art ◽  
Oxygen Exchange ◽  
Solid Oxide ◽  
Doped Ceria ◽  
Exchange Reactions ◽  
Electronic Conductivities ◽  
Kinetics Of

Ceria containing electrodes offer several advantages compared to state-of-the art Nickel-Yttria-Stabilizd Zirconia (Ni-YSZ) cermets, such as higher ionic and electronic conductivities, and a high activity for oxygen exchange reactions on...

Surface Oxygen Exchange Kinetics of Solid Oxide Ion Conductors

1993 ◽  
pp. 167-180 ◽  
Author(s):  
B. A. Boukamp ◽  
I. C. Vinke ◽  
K. J. Vries ◽  
A. J. Burggraaf
Keyword(s):  
Oxygen Exchange ◽  
Solid Oxide ◽  
Surface Oxygen ◽  
Exchange Kinetics ◽  
Kinetics Of ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
Ion Conductors

Oxygen transport kinetics of the misfit layered oxide Ca3Co4O9+δ

2014 ◽  
Vol 2 (46) ◽  
pp. 19717-19725 ◽  
Author(s):  
V. Thoréton ◽  
Y. Hu ◽  
C. Pirovano ◽  
E. Capoen ◽  
N. Nuns ◽  
...  
Keyword(s):  
Oxygen Transport ◽  
Oxygen Exchange ◽  
Solid Oxide ◽  
Transport Kinetics ◽  
Air Electrode ◽  
Layered Oxide ◽  
Exchange Kinetics ◽  
Kinetics Of

Ca3Co4O9+δ exhibits fast oxygen exchange kinetics rendering it a promising electrode for application as an air electrode in solid oxide cells.

scholarly journals Modification of LSCM–GDC cathodes to enhance performance for high temperature CO2 electrolysis using solid oxide electrolysis cells (SOECs)

2017 ◽  
Vol 5 (15) ◽  
pp. 7081-7090 ◽  
Author(s):  
X. Yue ◽  
J. T. S. Irvine
Keyword(s):  
High Temperature ◽  
High Activity ◽  
Electrode Materials ◽  
State Of The Art ◽  
Solid Oxide ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cells ◽  
Co2 Electrolysis

Extensive efforts have been made to find new fuel electrode materials for solid oxide cells with high activity and durability to provide more robust materials than state-of-the-art materials, Ni-cermets.

THE ROLE OF REACTION PRODUCTS IN THE SILVER-CATALYZED OXIDATION OF ETHYLENE

1960 ◽  
Vol 38 (11) ◽  
pp. 2256-2268 ◽  
Author(s):  
Kenneth E. Hayes
Keyword(s):  
Carbon Dioxide ◽  
Ethylene Oxide ◽  
Initial Rate ◽  
Flow System ◽  
Oxygen Exchange ◽  
Reaction Products ◽  
Exchange Reactions ◽  
Kinetics Of ◽  
Catalyzed Oxidation

Initial-rate studies of the kinetics of the silver-catalyzed oxidation of ethylene oxide and carbon dioxide in a flow system have been made. It was found that, using carefully purified reactants, the effect of added carbon dioxide was to suppress the formation of ethylene oxide only. The initial rate of the formation of ethylene oxide is given by the equation[Formula: see text]where r0 is the initial rate in the absence of CO2; m, n, and k are constants with m + n = 1.These results together with the results of oxygen exchange reactions between O18 and C2H4O16, CO216 and H2O16 are interpreted mechanistically.

Analysis of process of emulsions transport in hydrophilic/oleophilic granular porous media driven by capillary force

2018 ◽  
Vol 2 (21) ◽  
pp. 85-101
Author(s):  
Olga Shtyka ◽  
Łukasz Przybysz ◽  
Mariola Błaszczyk ◽  
Jerzy P. Sęk
Keyword(s):  
Porous Media ◽  
Experimental Research ◽  
Granular Media ◽  
Single Phase ◽  
Influential Factor ◽  
Dispersed Phase ◽  
Porous Structures ◽  
Phase Concentration ◽  
Granular Porous Media ◽  
Kinetics Of

The research focuses on the issues concerning a process of multiphase liquids transport in granular porous media driven by the capillary pressure. The current publication is meant to introduce the results of experimental research conducted to evaluate the kinetics of the imbibition and emulsions behavior inside the porous structures. Moreover, the influence of the dispersed phase concentration and granular media structure on the mentioned process was considered. The medium imbibition with emulsifier-stabilized emulsions composed of oil as the dispersed phase in concentrations of 10 vol%, 30 vol%, and 50 vol%, was investigated. The porous media consisted of oleophilic/hydrophilic beads with a fraction of 200–300 and 600–800 μm. The experimental results provided that the emulsions imbibition in such media depended stronger on its structure compare to single-phase liquids. The increase of the dispersed phase concentration caused an insignificant mass decreasing of the imbibed emulsions and height of its penetration in a sorptive medium. The concentrations of the imbibed dispersions exceeded their initial values, but reduced with permeants front raise in the granular structures that can be defined as the influential factor for wicking process kinetics.

Fast oxygen exchange kinetics of pore-free Bi1−xSrxFeO3−δ thin films

2011 ◽  
Vol 13 (37) ◽  
pp. 16530 ◽  
Author(s):  
Anja Wedig ◽  
Rotraut Merkle ◽  
Benjamin Stuhlhofer ◽  
Hanns-Ulrich Habermeier ◽  
Joachim Maier ◽  
...  
Keyword(s):  
Thin Films ◽  
Oxygen Exchange ◽  
Exchange Kinetics ◽  
Kinetics Of
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