Hydrogen Oxidation by Alcaligenes

1996 ◽  
pp. 110-117 ◽  
Author(s):  
B. Friedrich ◽  
M. Bernhard ◽  
J. Dernedde ◽  
T. Eitinger ◽  
O. Lenz ◽  
...  
Keyword(s):  
Hydrogen Oxidation

Compact and efficient gas diffusion electrodes based on nanoporous alumina membranes for microfuel cells and gas sensors

The Analyst ◽  
2020 ◽  
Vol 145 (1) ◽  
pp. 122-131 ◽  
Author(s):  
Wanda V. Fernandez ◽  
Rocío T. Tosello ◽  
José L. Fernández
Keyword(s):  
Response Times ◽  
Hydrogen Oxidation ◽  
Fast Response ◽  
Gas Diffusion ◽  
Limiting Current ◽  
Gas Diffusion Electrodes ◽  
Nanoporous Alumina ◽  
Alumina Membranes ◽  
Current Densities ◽  
Microfuel Cells

Gas diffusion electrodes based on nanoporous alumina membranes electrocatalyze hydrogen oxidation at high diffusion-limiting current densities with fast response times.

Dependence of hydrogen oxidation reaction on water vapor in anode-supported solid oxide fuel cells

2021 ◽  
Vol 362 ◽  
pp. 115565
Author(s):  
R.A. Budiman ◽  
T. Ishiyama ◽  
K.D. Bagarinao ◽  
H. Kishimoto ◽  
K. Yamaji ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Water Vapor ◽  
Solid Oxide Fuel Cells ◽  
Oxidation Reaction ◽  
Hydrogen Oxidation ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hydrogen Oxidation Reaction

scholarly journals How the anisotropy of surface oxide formation influences the transient activity of a surface reaction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
P. Winkler ◽  
J. Zeininger ◽  
Y. Suchorski ◽  
M. Stöger-Pollach ◽  
P. Zeller ◽  
...  
Keyword(s):  
Hydrogen Oxidation ◽  
Surface Oxidation ◽  
Surface Reactivity ◽  
Surface Oxide ◽  
Surface Structures ◽  
Oxide Formation ◽  
Reaction Fronts ◽  
Transient Activity ◽  
Surface Oxide Formation ◽  
Stepped Surface

AbstractScanning photoelectron microscopy (SPEM) and photoemission electron microscopy (PEEM) allow local surface analysis and visualising ongoing reactions on a µm-scale. These two spatio-temporal imaging methods are applied to polycrystalline Rh, representing a library of well-defined high-Miller-index surface structures. The combination of these techniques enables revealing the anisotropy of surface oxidation, as well as its effect on catalytic hydrogen oxidation. In the present work we observe, using locally-resolved SPEM, structure-sensitive surface oxide formation, which is summarised in an oxidation map and quantitatively explained by the novel step density (SDP) and step edge (SEP) parameters. In situ PEEM imaging of ongoing H2 oxidation allows a direct comparison of the local reactivity of metallic and oxidised Rh surfaces for the very same different stepped surface structures, demonstrating the effect of Rh surface oxides. Employing the velocity of propagating reaction fronts as indicator of surface reactivity, we observe a high transient activity of Rh surface oxide in H2 oxidation. The corresponding velocity map reveals the structure-dependence of such activity, representing a direct imaging of a structure-activity relation for plenty of well-defined surface structures within one sample.

Atomic-level insight into reasonable design of metal-based catalysts for hydrogen oxidation in alkaline electrolytes

2021 ◽  
Author(s):  
Lulu An ◽  
Xu Zhao ◽  
Tonghui Zhao ◽  
Deli Wang
Keyword(s):  
Fuel Cell ◽  
Anion Exchange ◽  
Hydrogen Oxidation ◽  
Anion Exchange Membrane ◽  
Atomic Level ◽  
Alkaline Electrolytes ◽  
Exchange Membrane ◽  
Kinetics Of ◽  
Insight Into ◽  
Hydrogen Utilization

Anion exchange membrane fuel cell (AEMFC) is becoming highly attractive for hydrogen utilization owing to the advantages of employing economic catalysts in alkaline electrolytes. Nevertheless, the kinetics of anodic hydrogen...

Carbide-Supported PtRu Catalysts for Hydrogen Oxidation Reaction in Alkaline Electrolyte

ACS Catalysis ◽  
2021 ◽  
pp. 932-947
Author(s):  
Eliran R. Hamo ◽  
Ramesh K. Singh ◽  
John C. Douglin ◽  
Sian Chen ◽  
Mohamed Ben Hassine ◽  
...  
Keyword(s):  
Oxidation Reaction ◽  
Hydrogen Oxidation ◽  
Alkaline Electrolyte ◽  
Hydrogen Oxidation Reaction ◽  
Ptru Catalysts
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