Surface characterization and reactivity of Pd8Ni92 (111) and (110) alloys

Abstract Pd 8 Ni 92 (111) and (110) surfaces have been investigated using X-ray photoelectron spectroscopy and low energy ion scattering. As expected, a high rate of Pd segregation is observed on both faces leading to Pd surface concentrations of 76 and 81 at.% on the (111) and (110) surfaces, respectively. The catalytic performances of these surfaces have been studied for the 1,3-butadiene hydrogenation reaction. The catalytic activity of these alloys is greatly enhanced relative to that of the pure Pd(111) and (110) surfaces.

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