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The Hydrogenation of Acetylene Catalyzed by Palladium: Hydrogen Pressure Dependence
The kinetics of acetylene hydrogenation catalyzed by a clean palladium foil at high pressures are measured and yield an activation energy of 9.6±0.1 kcal/mol when using hydrogen. The rate exhibits aExpand
Advancing our understanding
Palladium-catalyzed cyclotrimerization and hydrogenation: from ultrahigh vacuum to high-pressure catalysis
Abstract The surface reactions involved in the palladium-catalyzed formation of benzene from acetylene are discussed as an example of the way in which such strategies can be used to understandExpand
Reactive and kinetic properties of carbon monoxide and carbon dioxide on a graphite surface
Temperature-programmed desorption (TPD) results after chemisorption of carbon monoxide (CO) and carbon dioxide (CO,) on polycrystalline graphite are presented. CO adsorbs onto graphite with a veryExpand
Temperature programmed desorption of co-adsorbed hydrogen and acetylene on Pd(111)
Co-adsorbed acetylene and hydrogen react on Pd(111) to form ethylene and butene. Benzene is also formed and it is found that the low temperature (∼ 280 K) desorption state observed on the cleanExpand
Enantioselective chemisorption on a chirally modified surface in ultrahigh vacuum: adsorption of propylene oxide on 2-butoxide-covered palladium(111).
The coverage of (R)-propylene oxide adsorbing on an (R-2-butoxide-covered surface, ratioed to that on one covered by (S)-2- butoxide, reaches a maximum value of approximately 2, which implies that the enantioselectivity depends critically on coverage and arises due to chiral "pockets" formed on the surface. Expand
On the Commonality Between Theoretical Models for Fluid and Solid Friction, Wear and Tribochemistry
Tribology is concerned with the influence of mechanically applied forces on interfacial phenomena that accompany and control sliding. A wide range of models has been developed to describe theseExpand
An Investigation of the Reaction Pathway for Ethylene Hydrogenation on Pd(111)
The hydrogenation of ethylene on Pd(111) is probed using a combination of temperature-programmed desorption (TPD) and reflection−absorption infrared spectroscopy (RAIRS). Ethylene adsorbs on cleanExpand
Reflection-absorption infrared spectroscopy of ethylene on palladium (111) at high pressure
The adsorption of ethylene adsorbed on Pd(111) at ∼ 300 K is studied using reflection-absorption infrared spectroscopy which confirms the formation of an ethylidyne species because of the presence ofExpand
Hydrocarbon conversion on palladium catalysts
Abstract The reaction pathways for acetylene trimerization and hydrogenation, and ethylene hydrogenation, catalyzed by palladium, are explored using a range of surface-sensitive techniques.Expand