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Adsorption and Reaction on Thin Metal Overlayers

Published online by Cambridge University Press:  25 February 2011

Paul J. Berlowitz ,
Charles H. F. Peden  and
D. Wayne Goodman
Paul J. Berlowitz
Affiliation:
Surface Science Division, Sandia National Laboratories, Albuquerque, New Mexico, 87185, USA
Charles H. F. Peden
Affiliation:
Surface Science Division, Sandia National Laboratories, Albuquerque, New Mexico, 87185, USA
D. Wayne Goodman
Affiliation:
Surface Science Division, Sandia National Laboratories, Albuquerque, New Mexico, 87185, USA
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Abstract

These studies have addressed the adsorption of CO on very thin (submonolayer to multilayer) deposits of Cu, Ni, Pd, and Fe on single crystals of Ru and W. The kinetics of the methanation, ethane hydrogenolysis, and cyclohexane dehydrogenation reactions have also been measured over these model bimetallic catalysts. Temperature programmed desorption (TPD) spectra of CO at submonolayer coverages reveal new desorption features which have significantly perturbed peak maxima from those observed on the bulk metals, indicating the unique character of these monolayer metallic films. This behavior has been correlated with LEED, ARUPS, work function, and kinetic measurements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 83: Symposium J – Physical and Chemical Properties of Thin Metal Overlayers and Alloy Surfaces , 1986 , 161
Copyright
Copyright © Materials Research Society 1987

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References

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