Fig. 3.
TEM images of reduced catalysts: (a)Cu/SiO2, (b)Cu-0.25In/SiO2, (c)Cu-0.5In/SiO2, (d)Cu-1In/SiO2, (e)Cu-2In/SiO2 and HRTEM image of (f)Cu/SiO2, (g)Cu-1In/SiO2, (h)Cu-2In/SiO2.
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