ChemInform Abstract: CATALYTIC SYNTHESIS OF HYDROCARBONS FROM MOLECULAR HYDROGEN CARBON MONOXIDE MIXTURES OVER THE GROUP VIII METALS. III. METAL-SUPPORT EFFECTS WITH PLATINUM M AND PALLADIUM CATALYSTS

1976 ◽  
Vol 7 (9) ◽  
pp. no-no
Author(s):  
M. A. VANNICE
Keyword(s):  
Carbon Monoxide ◽  
Molecular Hydrogen ◽  
Palladium Catalysts ◽  
Catalytic Synthesis ◽  
Group Viii ◽  
Support Effects ◽  
Metal Support

Control of Metal Nanocrystal Size Reveals Metal-Support Interface Role for Ceria Catalysts

Science ◽  
2013 ◽  
Vol 341 (6147) ◽  
pp. 771-773 ◽  
Author(s):  
Matteo Cargnello ◽  
Vicky V. T. Doan-Nguyen ◽  
Thomas R. Gordon ◽  
Rosa E. Diaz ◽  
Eric A. Stach ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Structure And Function ◽  
Nanocrystal Size ◽  
Model Systems ◽  
Group Viii ◽  
Metal Interface ◽  
Platinum Nanocrystals ◽  
Metal Support ◽  
Ceria Catalysts ◽  
And Function

Interactions between ceria (CeO2) and supported metals greatly enhance rates for a number of important reactions. However, direct relationships between structure and function in these catalysts have been difficult to extract because the samples studied either were heterogeneous or were model systems dissimilar to working catalysts. We report rate measurements on samples in which the length of the ceria-metal interface was tailored by the use of monodisperse nickel, palladium, and platinum nanocrystals. We found that carbon monoxide oxidation in ceria-based catalysts is greatly enhanced at the ceria-metal interface sites for a range of group VIII metal catalysts, clarifying the pivotal role played by the support.

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