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The surface state and catalytic properties of Pt black after O2-H2 cycles (1992)

Paål, Z. ; Schlögl, R. ; Ertl, G.

Springer

Catalysis letters 12 (1992), S. 331-344

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Details

ISSN: 1572-879X

Schlagwort(e): XPS of Pt black catalyst ; UPS of Pt black catalyst ; surface state of Pt black ; catalytic properties of Pt black

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract XPS and UPS of a Pt black catalyst after customary H2-O2 regeneration shows considerable amounts of residual C as well as surface OH/H2O species. Surface C could not be removed even by O2 at 800 K. Oxygenates are stable even after H2 treatment up to 750 K. Their chemical state has been tentatively identified by comparing XPS and UPS results. Catalytic transformations of n-hexane on Pt black treated analogously is reported and the effect of surface species on catalytic properties discussed. Possible consequences of the presence of stable surface OH/H2O species on H2-O2 titrations are mentioned.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00765062

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