Modification of the methanation activity on a Ni(111) surface by Ar ion bombardment

A. Berkó, H. P. Bonzel

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The influence of Ar+ sputtering and methanation at 500°C, 1 bar total pressure on the specific reaction rate was studied for a Ni(111) surface. It was found that the sputtering/reaction treatment increased the methanation activity by ~400%. By thermal desorption spectroscopy it was shown that a change in surface area is not responsible for the change in the activity. At the same time the high temperature feature of CO desorption from the Ar+ treated surface correlates well with the enhanced activity. Both can be explained by a structural changes of the Ni surface itself.

Original languageEnglish
Pages (from-to)1112-1116
Number of pages5
JournalSurface Science
Volume251-252
Issue numberC
DOIs
Publication statusPublished - Jul 1 1991

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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