Adsorption of co on (001) ruthenium at temperatures ≥ 300 k

Theodore E. Madey, Dietrich Menzel

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

The adsorption of CO on Ru(001) has been studied using a combination of techniques: LEED/Auger, Kelvin probe contact potential changes, and flash desorption mass spectrometry. Adsorption of CO is reversible at temperatures and pressures as high as 700 K and 10-4 Torr, respectively. Two binding states of CO are identified, and isosteric heats determined both from work function changes and from LEED intensity measurements agree well with flash desorption energies. A disordering of the CO layer due to repulsive interactions between neighbors at high coverages is postulated. Electron beam-induced LEED pattern changes are characterized and found to have a high cross section (-7 × 10-17 cm2) at - 110eV.

Original languageEnglish
Pages (from-to)229-235
Number of pages7
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume13
Issue numberS2
DOIs
StatePublished - Jan 1974

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