Synthesis and characterization of supported Pt and Pt alloys nanoparticles used for the catalytic oxidation of sulfur dioxide.

Sotiris Koutsopoulos; Kim Michael Eriksen; Rasmus Fehrmann

doi:10.1016/j.jcat.2005.12.009

Synthesis and characterization of supported Pt and Pt alloys nanoparticles used for the catalytic oxidation of sulfur dioxide.

Sotiris Koutsopoulos, Kim Michael Eriksen, Rasmus Fehrmann

Department of Chemistry

Technical University of Denmark

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Controlled pore glass silica (CPG) was used as support to prepare platinum-based catalysts using the wet impregnation method and DMSO or CHCl3 as solvent. In all cases, the catalyst loading with the active phase was 2 wt%. The catalysts were tested for the SO2 oxidation reaction at atmospheric pressure in the temperature range of 250–700 °C. The effect of doping the active metal with rhodium and palladium was also studied. The catalytic activities of the supported catalysts were found to follow the order Pt–Pd/CPG > Pt–Rh/CPG > Pt/CPG. A significant synergistic effect of the Pt–Pd alloy was observed compared with the SO2 conversion efficiency of the individual metals supported on CPG. The effect of the solvent used in the impregnation step is also discussed with regard to the properties of the final product and to catalytic activity.

Original language	English
Journal	Journal of Catalysis
Volume	238
Issue number	2
Pages (from-to)	270-276
ISSN	0021-9517
DOIs	https://doi.org/10.1016/j.jcat.2005.12.009
Publication status	Published - 2006

Keywords

Controlled pore silica; Platinum; Palladium; Rhodium; Catalyst; Sulphur dioxide oxidation

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title = "Synthesis and characterization of supported Pt and Pt alloys nanoparticles used for the catalytic oxidation of sulfur dioxide.",

abstract = "Controlled pore glass silica (CPG) was used as support to prepare platinum-based catalysts using the wet impregnation method and DMSO or CHCl3 as solvent. In all cases, the catalyst loading with the active phase was 2 wt%. The catalysts were tested for the SO2 oxidation reaction at atmospheric pressure in the temperature range of 250–700 °C. The effect of doping the active metal with rhodium and palladium was also studied. The catalytic activities of the supported catalysts were found to follow the order Pt–Pd/CPG > Pt–Rh/CPG > Pt/CPG. A significant synergistic effect of the Pt–Pd alloy was observed compared with the SO2 conversion efficiency of the individual metals supported on CPG. The effect of the solvent used in the impregnation step is also discussed with regard to the properties of the final product and to catalytic activity.",

keywords = "Controlled pore silica; Platinum; Palladium; Rhodium; Catalyst; Sulphur dioxide oxidation",

author = "Sotiris Koutsopoulos and Eriksen, {Kim Michael} and Rasmus Fehrmann",

year = "2006",

doi = "10.1016/j.jcat.2005.12.009",

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T1 - Synthesis and characterization of supported Pt and Pt alloys nanoparticles used for the catalytic oxidation of sulfur dioxide.

AU - Koutsopoulos, Sotiris

AU - Eriksen, Kim Michael

AU - Fehrmann, Rasmus

PY - 2006

Y1 - 2006

N2 - Controlled pore glass silica (CPG) was used as support to prepare platinum-based catalysts using the wet impregnation method and DMSO or CHCl3 as solvent. In all cases, the catalyst loading with the active phase was 2 wt%. The catalysts were tested for the SO2 oxidation reaction at atmospheric pressure in the temperature range of 250–700 °C. The effect of doping the active metal with rhodium and palladium was also studied. The catalytic activities of the supported catalysts were found to follow the order Pt–Pd/CPG > Pt–Rh/CPG > Pt/CPG. A significant synergistic effect of the Pt–Pd alloy was observed compared with the SO2 conversion efficiency of the individual metals supported on CPG. The effect of the solvent used in the impregnation step is also discussed with regard to the properties of the final product and to catalytic activity.

AB - Controlled pore glass silica (CPG) was used as support to prepare platinum-based catalysts using the wet impregnation method and DMSO or CHCl3 as solvent. In all cases, the catalyst loading with the active phase was 2 wt%. The catalysts were tested for the SO2 oxidation reaction at atmospheric pressure in the temperature range of 250–700 °C. The effect of doping the active metal with rhodium and palladium was also studied. The catalytic activities of the supported catalysts were found to follow the order Pt–Pd/CPG > Pt–Rh/CPG > Pt/CPG. A significant synergistic effect of the Pt–Pd alloy was observed compared with the SO2 conversion efficiency of the individual metals supported on CPG. The effect of the solvent used in the impregnation step is also discussed with regard to the properties of the final product and to catalytic activity.

KW - Controlled pore silica; Platinum; Palladium; Rhodium; Catalyst; Sulphur dioxide oxidation

U2 - 10.1016/j.jcat.2005.12.009

DO - 10.1016/j.jcat.2005.12.009

M3 - Journal article

SN - 0021-9517

VL - 238

SP - 270

EP - 276

JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 2

ER -

Synthesis and characterization of supported Pt and Pt alloys nanoparticles used for the catalytic oxidation of sulfur dioxide.

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