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

K Wilson; C Hardacre; Christopher John Baddeley; J Ludecke; DP Woodruff; RM Lambert

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

K Wilson, C Hardacre, Christopher John Baddeley, J Ludecke, DP Woodruff, RM Lambert

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

83 Citations (Scopus)

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.

Original language	English
Pages (from-to)	279
Number of pages	279
Journal	Surface Science
Volume	372
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
soft X-ray photoelectron spectroscopy
solid-gas interfaces
sulphur dioxide
thermal desorption
thermal desorption spectroscopy
vibrations of adsorbed molecules
X-ray photoelectron spectroscopy
SURFACE-REACTIONS
CARBON-MONOXIDE
ADSORPTION
OXIDATION
OXYGEN
CATALYSTS
STABILITY
SULFUR
FILMS

Cite this

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title = "A spectroscopic study of the chemistry and reactivity of SO2 on Pt: 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 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.",

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, soft X-ray photoelectron spectroscopy, solid-gas interfaces, sulphur dioxide, thermal desorption, thermal desorption spectroscopy, vibrations of adsorbed molecules, X-ray photoelectron spectroscopy, SURFACE-REACTIONS, CARBON-MONOXIDE, ADSORPTION, OXIDATION, OXYGEN, CATALYSTS, STABILITY, SULFUR, FILMS",

author = "K Wilson and C Hardacre and Baddeley, {Christopher John} and J Ludecke and DP Woodruff and RM Lambert",

year = "1997",

month = feb,

day = "10",

language = "English",

volume = "372",

pages = "279",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

}

TY - JOUR

T1 - A spectroscopic study of the chemistry and reactivity of SO2 on Pt: Reactions with O2, CO and C3H6

AU - Wilson, K

AU - Hardacre, C

AU - Baddeley, Christopher John

AU - Ludecke, J

AU - Woodruff, DP

AU - Lambert, RM

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 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.

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 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.

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

KW - soft X-ray photoelectron spectroscopy

KW - solid-gas interfaces

KW - sulphur dioxide

KW - thermal desorption

KW - thermal desorption spectroscopy

KW - vibrations of adsorbed molecules

KW - X-ray photoelectron spectroscopy

KW - SURFACE-REACTIONS

KW - CARBON-MONOXIDE

KW - ADSORPTION

KW - OXIDATION

KW - OXYGEN

KW - CATALYSTS

KW - STABILITY

KW - SULFUR

KW - FILMS

M3 - Article

SN - 0039-6028

VL - 372

SP - 279

JO - Surface Science

JF - Surface Science

ER -

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

Abstract

Keywords

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