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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 12
BKCSDE 27(12)
December 20, 2006

Title	Interaction of SO₂ with Oxygen on Ni(100) Studied by XPS and NEXAFS
Author	Chang Min Kim
Keywords	Ni, NiO, SO₂, NEXAFS, Surface
Abstract	The adsorption and surface reactions of SO₂ on Ni(100), c(2x2)_O/Ni (100) and NiO(111)/Ni(100) surfaces have been investigated using X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) technique. On Ni(100), chemisorbed SO₂ is formed at 160 K. When SO₂ is adsorbed on c(2x2)_O/Ni(100) at 160 K, SO₂ reacts with oxygen to form SO₃ and trace amount of SO₄ species. SO₃ is adsorbed on this surface with its C₃ axis perpendicular to the surface. On a NiO(111)/Ni(100) surface, both SO₃ and SO₄ species are formed at 160 K from adsorbed SO₂.
Page	2037 - 2039
Full Text	PDF

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