Adsorption and surface reactivity of metals by secondary ion mass spectrometry. Part 1.—Adsorption of carbon monoxide on nickel and copper

Abstract

The adsorption of carbon monoxide on polycrystalline nickel and copper has been studied by secondary ion mass spectrometry (SIMS), in the temperature range 77–390 K. The results indicate that carbon monoxide is adsorbed in both a linear and a bridged form on nickel in the range 77–370 K but only in a bridged form at temperatures above this. For copper only a linear structure was observed at 77 K and only a bridged structure at 295 K. On both metals there is a build up of carbon on the surface at 390 K. These results are discussed in terms of those obtained from other techniques.