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A spectroscopic study of the chemistry and reactivity of SO2 on Pt{111}: Reactions with O-2, CO and C3H6
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UNSPECIFIED (1997) A spectroscopic study of the chemistry and reactivity of SO2 on Pt{111}: Reactions with O-2, CO and C3H6. Surface Science, 372 (1-3). pp. 279-288. ISSN 0039-6028.
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Abstract
The chemisorption and reactivity of SO2 on Pt{111} have been studied by HREELS, XPS, NEXAFS and temperature-programmed desorption. At 160 K SO2 adsorbs intact at high coverages, with eta(2) S-O coordination to the surface. On annealing to 270 K, NEXAFS indicates the SO2 molecular plane essentially perpendicular to the surface. Preadsorbed O-a reacts with SO2 to yield adsorbed SO4, identified as the key surface species responsible for SO2-promoted catalytic alkane oxidation. Coadsorbed CO or propene efficiently reduce SO2 overlayers to deposit S-a, and the implications of this for catalytic systems are discussed.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | Surface Science | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0039-6028 | ||||
Official Date: | 10 February 1997 | ||||
Dates: |
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Volume: | 372 | ||||
Number: | 1-3 | ||||
Number of Pages: | 10 | ||||
Page Range: | pp. 279-288 | ||||
Publication Status: | Published |
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