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

作者：Manzoli Maela; Boccuzzi Flora^*; Trevisan Valentina; Menegazzo Federica; Signoretto Michela; Pinna Francesco

来源：Applied Catalysis B: Environmental , 2010, 96(1-2): 28-33.

DOI：10.1016/j.apcatb.2010.01.030

• Dispersion
• Gold
• Sulfated zirconia
• WGS reaction
• Sulfates

The effect of the addition of various amounts 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 SO42- groups that determine the deposition of Au in the form of highly dispersed non-metallic gold clusters in close contact with the support.

• 出版日期2010-4-26