SO 2-promoted propane oxidation over Pt/Al 2 O 3 catalysts

Adam F Lee; Karen Wilson; Richard M Lambert

doi:10.1016/S0167-2991(00)80982-9

SO 2-promoted propane oxidation over Pt/Al 2 O 3 catalysts

Adam F Lee, Karen Wilson, Richard M Lambert

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

Abstract

The origin of SO2-promoted propane oxidation over Pt/alumina catalysts has been elucidated utilising spectroscopic and kinetic measurements over dispersed Pt/Al2O3 and model γ-Al2O3/Pt(111) systems. HREELS, NEXAFS, TPRS and XPS studies show that under oxidising conditions SO2 promotes the dissociative chemisorption of C3H8 at both Pt and support sites via surface sulphation. Interfacial sulphoxy species play a key role in activating propane for subsequent combustion at metal sites via a bifunctional spillover mechanism. The loading dependence of the promotional effect is rationalised in the light of X-ray and TEM measurements that reveal catalyst sulphation is accompanined by the reduction and concomitant sintering of small (<20 ) PtO2 particles to form large, active Pt metal clusters.

Original language	Undefined/Unknown
Pages (from-to)	353-358
Number of pages	6
Journal	Studies in surface science and catalysis
Volume	130
DOIs	https://doi.org/10.1016/S0167-2991(00)80982-9
Publication status	Published - 2000
Event	12th International Congress on Catalysis - Granada, Spain Duration: 9 Jul 2000 → 14 Jul 2000

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title = "SO 2-promoted propane oxidation over Pt/Al 2 O 3 catalysts",

abstract = "The origin of SO2-promoted propane oxidation over Pt/alumina catalysts has been elucidated utilising spectroscopic and kinetic measurements over dispersed Pt/Al2O3 and model γ-Al2O3/Pt(111) systems. HREELS, NEXAFS, TPRS and XPS studies show that under oxidising conditions SO2 promotes the dissociative chemisorption of C3H8 at both Pt and support sites via surface sulphation. Interfacial sulphoxy species play a key role in activating propane for subsequent combustion at metal sites via a bifunctional spillover mechanism. The loading dependence of the promotional effect is rationalised in the light of X-ray and TEM measurements that reveal catalyst sulphation is accompanined by the reduction and concomitant sintering of small (<20 ) PtO2 particles to form large, active Pt metal clusters.",

author = "Lee, {Adam F} and Karen Wilson and Lambert, {Richard M}",

year = "2000",

doi = "10.1016/S0167-2991(00)80982-9",

language = "Undefined/Unknown",

volume = "130",

pages = "353--358",

journal = "Studies in surface science and catalysis",

issn = "0167-2991",

publisher = "Elsevier",

note = "12th International Congress on Catalysis ; Conference date: 09-07-2000 Through 14-07-2000",

}

TY - JOUR

T1 - SO 2-promoted propane oxidation over Pt/Al 2 O 3 catalysts

AU - Lee, Adam F

AU - Wilson, Karen

AU - Lambert, Richard M

PY - 2000

Y1 - 2000

N2 - The origin of SO2-promoted propane oxidation over Pt/alumina catalysts has been elucidated utilising spectroscopic and kinetic measurements over dispersed Pt/Al2O3 and model γ-Al2O3/Pt(111) systems. HREELS, NEXAFS, TPRS and XPS studies show that under oxidising conditions SO2 promotes the dissociative chemisorption of C3H8 at both Pt and support sites via surface sulphation. Interfacial sulphoxy species play a key role in activating propane for subsequent combustion at metal sites via a bifunctional spillover mechanism. The loading dependence of the promotional effect is rationalised in the light of X-ray and TEM measurements that reveal catalyst sulphation is accompanined by the reduction and concomitant sintering of small (<20 ) PtO2 particles to form large, active Pt metal clusters.

AB - The origin of SO2-promoted propane oxidation over Pt/alumina catalysts has been elucidated utilising spectroscopic and kinetic measurements over dispersed Pt/Al2O3 and model γ-Al2O3/Pt(111) systems. HREELS, NEXAFS, TPRS and XPS studies show that under oxidising conditions SO2 promotes the dissociative chemisorption of C3H8 at both Pt and support sites via surface sulphation. Interfacial sulphoxy species play a key role in activating propane for subsequent combustion at metal sites via a bifunctional spillover mechanism. The loading dependence of the promotional effect is rationalised in the light of X-ray and TEM measurements that reveal catalyst sulphation is accompanined by the reduction and concomitant sintering of small (<20 ) PtO2 particles to form large, active Pt metal clusters.

UR - https://www.sciencedirect.com/science/article/pii/S0167299100809829

U2 - 10.1016/S0167-2991(00)80982-9

DO - 10.1016/S0167-2991(00)80982-9

M3 - Article

SN - 0167-2991

VL - 130

SP - 353

EP - 358

JO - Studies in surface science and catalysis

JF - Studies in surface science and catalysis

T2 - 12th International Congress on Catalysis

Y2 - 9 July 2000 through 14 July 2000

ER -

SO<sub> 2-promoted propane oxidation over Pt/Al<sub> 2 O<sub> 3 catalysts

Abstract

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