The effect of the addition of variousamounts of sulfates to a zirconia support and its possible role during the Au deposition–precipitation step was examined. The high activity showed by the Au/ZrO2 catalysts in the WGS reaction was enhanced by the action of sulfates on the support. SO42 addition to zirconia brings a higher gold dispersion due to (i) the larger surface area and (ii) the positive role of SO4 2 groups that determine the deposition of Au in the formof highly dispersed non-metallic gold clusters in close contact with the support.

Au/ZrO2 catalysts for LT-WGSR: active role of sulfates during gold deposition

MANZOLI, Maela;BOCCUZZI, Flora;
2010-01-01

Abstract

The effect of the addition of variousamounts of sulfates to a zirconia support and its possible role during the Au deposition–precipitation step was examined. The high activity showed by the Au/ZrO2 catalysts in the WGS reaction was enhanced by the action of sulfates on the support. SO42 addition to zirconia brings a higher gold dispersion due to (i) the larger surface area and (ii) the positive role of SO4 2 groups that determine the deposition of Au in the formof highly dispersed non-metallic gold clusters in close contact with the support.
2010
96
28
33
Dispersion; Gold; Sulfated zirconia; WGS reaction; Sulfates
M. Manzoli; F. Boccuzzi; V. Trevisan; F. Menegazzo; M. Signoretto; F. Pinna
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/114952
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