Abstract
In this work, differently shaped ZnO supports were employed to study their effect on PdZn nanostructures. Our goal was to understand the role of ZnO morphology and consequently the major exposed faces (polar (0001), nonpolar (1120), or nonpolar (1010) facets) on the structural and electronic properties of the formed PdZn alloys and how it affects their chemical properties in selective 1,3-butadiene hydrogenation. A multitechnique approach that included in situ synchrotron X-ray diffraction (XRD) and in situ X-ray absorption spectroscopy (XAS) measurements combined with in situ diffuse reflectance infrared Fourier transformed spectroscopy (DRIFTS) and mass spectrometry (MS) has been accomplished to understand the formation of the PdZn alloy and the structural and electronic properties. Complementary characterization was obtained by high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy analysis of adsorbed CO (CO-FTIR), and X-ray photoelectron spectroscopy (XPS)...
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