Shedding light on catalytic ignition: coverage changes during CO oxidation on Pd(110) Authors
Cite this article as: Bowker, M., Jones, I.Z., Bennett, R.A. et al. Catalysis Letters (1998) 51: 187. doi:10.1023/A:1019013807493 Abstract
Catalytic ignition or ‘light-off’ has been studied for a reaction of importance in automobile exhaust emissions, namely, CO oxidation over Pd, a metal which has become an important component of car catalysts. We present kinetic and spectroscopic studies to show that light-off is associated with a step change in surface composition of reactants as the surface is heated. Fast XPS using synchrotron radiation of high brightness reveals that the surface is dominated by CO at low temperature and the coverage suddenly switches during light-off to an oxygen-atom-dominated situation.
carbon monoxide light-off molecular beam oxygen Pd(110) synchrotron radiation XPS
This revised version was published online in August 2006 with corrections to the Cover Date.
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