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research article

Vibrational mode-specific reaction of methane on a nickel surface

Beck, Rainer D.  
•
Maroni, P  
•
Papageorgopoulos, DC  
Show more
2003
Science

The dissociation of methane on a nickel catalyst is a key step in steam reforming of natural gas for hydrogen production. Despite substantial effort in both experiment and theory, there is still no atomic-scale description of this important gas-surface reaction. We report quantum state-resolved studies, using pulsed laser and molecular beam techniques, of vibrationally excited methane reacting on the nickel (100) surface. For doubly deuterated methane (CD2H2), we observed that the reaction probability with two quanta of excitation in one C-H bond was greater (by as much as a factor of 5) than with one quantum in each of two C-H bonds. These results clearly exclude the possibility of statistical models correctly describing the mechanism of this process and attest to the importance of full-dimensional calculations of the reaction dynamics.

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Type
research article
DOI
10.1126/science.1088996
Author(s)
Beck, Rainer D.  
Maroni, P  
Papageorgopoulos, DC  
Dang, TT  
Schmid, MP
Rizzo, TR  
Date Issued

2003

Publisher

American Association for the Advancement of Science

Published in
Science
Volume

302

Issue

5642

Start page

98

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LCPM  
Available on Infoscience
December 15, 2005
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/221358
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