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Effect of pretreatment on a platinized tin oxide catalyst used for low‐temperature Co oxidation
Author(s) -
Drawdy Jean E.,
Hoflund Gar B.,
Gardner Steven D.,
Yngvadottir Eva,
Schryer David R.
Publication year - 1990
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740160178
Subject(s) - tin , auger electron spectroscopy , catalysis , tin oxide , atmospheric temperature range , platinum , metal , chemistry , oxide , inorganic chemistry , torr , materials science , biochemistry , physics , meteorology , nuclear physics , organic chemistry , thermodynamics
A commercial platinized tin oxide catalyst used for low‐temperature CO oxidation has been characterized using ion scattering spectroscopy, Auger electron spectroscopy and electron spectroscopy for chemical analysis before and after reduction in 40 Torr of CO for 1 h at various temperatures in the range 75–175°C. The reduction results in loss of surface oxygen, formation of metallic tin, conversion of platinum oxides to PtOSn and Pt(OH) 2 and a small amount of metallic Pt which alloys with the tin. These results should be useful in understanding how the pretreatment temperature affects the catalytic activity of platinized tin oxide toward CO oxidation.