A spectroscopic study of the chemistry and reactivity of SO2 on Pt{111}: Reactions with O2, CO and C3H6

K. Wilson; C. Hardacre; C. J. Baddeley; J. Lüdecke; D. P. Woodruff; R. M. Lambert

A spectroscopic study of the chemistry and reactivity of SO2 on Pt{111}: Reactions with O2, CO and C3H6

K. Wilson, C. Hardacre, C. J. Baddeley, J. Lüdecke, D. P. Woodruff, R. M. Lambert^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 η₂ 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.

Original language	English
Pages (from-to)	279-288
Number of pages	10
Journal	Surface Science
Volume	372
Issue number	1-3
Publication status	Published - 10 Feb 1997

Keywords

Adsorption kinetics
Alkenes
Carbon monoxide
Catalysis
Chemisorption
Electron energy loss spectroscopy
Low index single crystal surfaces
Near edge extended X-ray absorption fine structure (NEXAFS)
Oxidation
Oxygen
Platinum

Cite this

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title = "A spectroscopic study of the chemistry and reactivity of SO2 on Pt{111}: Reactions with O2, CO and C3H6",

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 η2 S-O coordination to the surface. On annealing to 270 K, NEXAFS indicates the SO2 molecular plane essentially perpendicular to the surface. Preadsorbed Oa 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 Sa, and the implications of this for catalytic systems are discussed.",

keywords = "Adsorption kinetics, Alkenes, Carbon monoxide, Catalysis, Chemisorption, Electron energy loss spectroscopy, Low index single crystal surfaces, Near edge extended X-ray absorption fine structure (NEXAFS), Oxidation, Oxygen, Platinum",

author = "K. Wilson and C. Hardacre and Baddeley, {C. J.} and J. L{\"u}decke and Woodruff, {D. P.} and Lambert, {R. M.}",

year = "1997",

month = feb,

day = "10",

language = "English",

volume = "372",

pages = "279--288",

journal = "Surface Science",

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TY - JOUR

T1 - A spectroscopic study of the chemistry and reactivity of SO2 on Pt{111}

T2 - Reactions with O2, CO and C3H6

AU - Wilson, K.

AU - Hardacre, C.

AU - Baddeley, C. J.

AU - Lüdecke, J.

AU - Woodruff, D. P.

AU - Lambert, R. M.

PY - 1997/2/10

Y1 - 1997/2/10

N2 - 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 η2 S-O coordination to the surface. On annealing to 270 K, NEXAFS indicates the SO2 molecular plane essentially perpendicular to the surface. Preadsorbed Oa 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 Sa, and the implications of this for catalytic systems are discussed.

AB - 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 η2 S-O coordination to the surface. On annealing to 270 K, NEXAFS indicates the SO2 molecular plane essentially perpendicular to the surface. Preadsorbed Oa 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 Sa, and the implications of this for catalytic systems are discussed.

KW - Adsorption kinetics

KW - Alkenes

KW - Carbon monoxide

KW - Catalysis

KW - Chemisorption

KW - Electron energy loss spectroscopy

KW - Low index single crystal surfaces

KW - Near edge extended X-ray absorption fine structure (NEXAFS)

KW - Oxidation

KW - Oxygen

KW - Platinum

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M3 - Article

AN - SCOPUS:0031078174

SN - 0039-6028

VL - 372

SP - 279

EP - 288

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

A spectroscopic study of the chemistry and reactivity of SO2 on Pt{111}: Reactions with O2, CO and C3H6

Abstract

Keywords

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