ChemInform Abstract: Structure-Sensitive Catalytic Reactions on Oxide Surfaces

1986 ◽  
Vol 17 (7) ◽  
Author(s):  
J. E. GERMAIN
Keyword(s):  
Catalytic Reactions ◽  
Oxide Surfaces ◽  
Structure Sensitive ◽  
Abstract Structure

Polarization-driven catalysis via ferroelectric oxide surfaces

2016 ◽  
Vol 18 (29) ◽  
pp. 19676-19695 ◽  
Author(s):  
Arvin Kakekhani ◽  
Sohrab Ismail-Beigi
Keyword(s):  
Surface Chemistry ◽  
Direct Decomposition ◽  
Catalytic Reactions ◽  
Ferroelectric Polarization ◽  
Oxide Surfaces ◽  
Ferroelectric Oxide

Ferroelectric polarization can tune the surface chemistry: enhancing technologically important catalytic reactions such as NOx direct decomposition and SO2 oxidation.

Use of catalytic reactions to probe Mg-Al mixed oxide surfaces

1994 ◽  
Vol 25 (1-2) ◽  
pp. 87-95 ◽  
Author(s):  
Christopher T. Fishel ◽  
Robert J. Davis
Keyword(s):  
Mixed Oxide ◽  
Catalytic Reactions ◽  
Oxide Surfaces

ChemInform Abstract: Structure Sensitive Nitrogen Chemisorption on Supported Ruthenium Catalysts.

ChemInform ◽  
2010 ◽  
Vol 23 (38) ◽  
pp. no-no
Author(s):  
S. K. MASTHAN ◽  
K. S. R. RAO ◽  
P. S. S. PRASAD ◽  
P. K. RAO
Keyword(s):  
Ruthenium Catalysts ◽  
Structure Sensitive ◽  
Abstract Structure

scholarly journals Surface science and catalysis

1986 ◽  
Vol 318 (1541) ◽  
pp. 81-100 ◽  
Keyword(s):  
Surface Science ◽  
Hydrogen Transfer ◽  
Science Studies ◽  
High Reactivity ◽  
Catalytic Reactions ◽  
Metal Catalyst ◽  
Crystal Surfaces ◽  
Coordination Sites ◽  
Structure Sensitive ◽  
Catalyst Systems

Modern surface science studies have explored a large number of metal catalyst systems. Three classes of catalytic reactions can be identified: (1) those that occur over the metal surface; (2) reactions that take place on top of a strongly adsorbed overlayer and (3) reactions that occur on coadsorbate modified surfaces. Case histories for each class are presented. The first class of reactions is structure sensitive, and rough surfaces are needed for high reactivity. Ammonia synthesis, H 2 /D 2 exchange and complex hydrocarbon reaction studies all indicate the importance of high coordination sites that are present on atomically rough, open crystal surfaces, mostly in the second layer. A model is presented that correlates increased charge fluctuations at these sites with enhanced catalytic activity. The second class of reactions includes ethylene hydrogenation. It occurs via hydrogen transfer through a tenaciously held ethylidyne overlayer to weakly adsorbed ethylene molecules on top of this layer. Most catalytic reactions occur on coadsorbate modified metal surfaces. Sulphur, potassium, carbonaceous fragments and other metal constituents are employed most frequently as surface modifiers. These additives block sites and alter the bonding of the reactants, thereby changing the reaction paths. Their effects will be demonstrated through discussions of the CO/benzene, S/thiophene and CO/K interactions.

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