Fig. 2
From: Hydrodeoxygenation of water-insoluble bio-oil to alkanes using a highly dispersed Pd–Mo catalyst
XAFS characterization of the local coordination of Mo/Pd atoms in Pd/m–MoO3–P2O5/SiO2 catalyst. a The experimental Mo K-edge XANES spectra and b EXAFS Fourier transforms of the reduced catalyst, oxidized catalyst, and references. c Comparison of the WTs for the k 3-weighted Mo K-edge EXAFS signals for the high coordination shells in oxidized catalyst and reduced catalyst. d The experimental Pd K-edge XANES spectra and e EXAFS Fourier transforms of reduced catalyst, oxidized catalyst, and references. f Comparison of the WTs for the k 3-weighted Pd K-edge EXAFS signals for the high coordination shells in oxidized catalyst and reduced catalyst. g The theoretical XANES spectra calculated with the depicted square planer (PdO-P42/mmc) and distorted octahedral (PdO-I4/mmm and LaPdO3-Pbnm) structures. h Schematic representation of structural modulation due to the production of oxygen vacancies in the oxygen network by H2 reduction. The vertical dashed lines are drawn to guide the eye
