EXAFS Peaks and TPR Characterizing Bimetallic Interactions: Effects of Impregnation Methods on the Structure of Pt-Ru/C Catalysts

Figure 9

Comparison of (a) imaginary part and magnitude of Fourier transform (𝑘³-weighted, 3.0<𝑘<9.5Å⁻¹, Pt-Pt phase and amplitude corrected) of experimental EXAFS data at Pt edge for Pt-Re/γ-Al₂O_3(d) (black line), Pt foil (red line), and Pt/γ-Al₂O_3(d) (blue line); (b) imaginary part and magnitude of Fourier transform (𝑘³-weighted, 4.0<𝑘<14Å⁻¹, Re-Re_(theortical) phase and amplitude corrected) of experimental EXAFS data at Re edge for Pt-Re/γ-Al₂O_3(d) and Re/γ-Al₂O_3(d) (red line); (c) imaginary part and magnitude of Fourier transform (𝑘³-weighted, 4.0<𝑘<14Å⁻¹, Re-Re_{(experimental)} phase and amplitude corrected) of experimental EXAFS data at Re edge for Pt-Re/γ-Al₂O_3(d) and Re/γ-Al₂O_3(d) (red line).

(a)

(b)

(c)