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Gold–nickel bimetallic catalysts were prepared from Au/NiO and Au(OH) 3 –Ni(OH) 2 –NiCO 3 coprecipitates by treatment with hydrogen. Gold promoted the reduction of Ni(II) to Ni(0) at relatively low temperatures in the range of 100–150°C, which was confirmed by H 2 -TPR and in situ XAFS measurements, whereas NiO without Au was not fully reduced even at 300°C. The obtained...
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