scholarly journals On the effect of metal loading on the reducibility and redox chemistry of ceria supported Pd catalysts

2021 ◽  
Author(s):  
Adam Hugh Clark ◽  
Huw Marchbank ◽  
David Thompsett ◽  
Janet Fisher ◽  
Alessandro Longo ◽  
...  
Keyword(s):  
Redox Chemistry ◽  
X Ray Diffraction ◽  
Pd Catalysts ◽  
X Ray ◽  
Metal Loading ◽  
Supported Pd Catalysts ◽  
Effect Of Pd ◽  
Supported Pd

The effect of Pd loading on the redox characteristics of ceria was examined using in situ Pd K-edge XAS, Ce L3-edge XAS and in situ X-ray diffraction techniques. Analysis of...

scholarly journals Effect of Pd Dispersion on Methanol Decomposition over Supported Pd Catalysts

1990 ◽  
Vol 63 (1) ◽  
pp. 108-115 ◽  
Author(s):  
Yasuo Saitoh ◽  
Satoshi Ohtsu ◽  
Yasuo Makie ◽  
Takashi Okada ◽  
Kenji Satoh ◽  
...  
Keyword(s):  
Methanol Decomposition ◽  
Pd Catalysts ◽  
Pd Dispersion ◽  
Supported Pd Catalysts ◽  
Effect Of Pd ◽  
Supported Pd

Identification of the Active Species Generated from Supported Pd Catalysts in Heck Reactions: An in situ Quick Scanning EXAFS Investigation

2011 ◽  
Vol 133 (11) ◽  
pp. 3921-3930 ◽  
Author(s):  
Sven Reimann ◽  
Jan Stötzel ◽  
Ronald Frahm ◽  
Wolfgang Kleist ◽  
Jan-Dierk Grunwaldt ◽  
...  
Keyword(s):  
Active Species ◽  
Heck Reactions ◽  
Pd Catalysts ◽  
Supported Pd Catalysts ◽  
Supported Pd

INFLUENCE OF PRETREATMENT ON THE STRUCTURAL AND CATALYTIC PROPERTIES OF SUPPORTED Pd CATALYSTS FOR CO OXIDATION

2013 ◽  
Vol 20 (02) ◽  
pp. 1350013 ◽  
Author(s):  
CUN WEN ◽  
YI LIU ◽  
YUN GUO ◽  
YANQIN WANG ◽  
GUANZHONG LU
Keyword(s):  
Catalytic Activity ◽  
Co Oxidation ◽  
Catalytic Properties ◽  
Active Oxygen Species ◽  
Pd Catalysts ◽  
Pd Dispersion ◽  
Supported Pd Catalysts ◽  
In Situ Drift ◽  
Supported Pd

The effects of pretreating atmospheres ( H2 , O2 and Ar ) on the activity for CO oxidation and Pd dispersion of Pd/Pr6O11 catalyst were investigated. The result shows after the Pd/Pr6O11 catalyst was pretreated by hydrogen or oxygen at 550°C, its catalytic activity for CO oxidation can obviously increase, and the activity of H2 -pretreated catalyst is superior to that of O2 -pretreated catalyst, which is attributed to an increase of Pd dispersion. The catalyst pretreated by Ar behaves the worst catalytic activity for CO oxidation. The results of CO pulse, CO chemisorption and in situ DRIFT testing indicate that the surface species (hydroxyl species or active oxygen species) generated during pretreating processes can prevent Pd particles from immigrating and sintering, resulting in an increase of the Pd dispersion on the surface of support.

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