Fig. 4: Comparing reduction of PtAl between gas and liquid environments.
From: Pt nanoparticles breathe and reversibly detach from Al2O3 in hydrogen
a Kinetics of PtAl reduction in gas and liquid phase, determined from normalized intensity of the nearest-neighbor Pt-Pt peak at about R = 2.77 Å in the PDF patterns. b Difference PDF patterns (dots) of PtAl at the end of the isothermal reduction in H2/Ar flow at 150 °C (gas) and in H2-saturated cyclohexane at 70 °C (liquid) and their fit (solid lines), compared to simulated PDF patterns of the Pt NPs in the Pt55H91/γ-Al2O3 model reported in (a). Only the contribution from the Pt phase has been simulated. Patterns are offset for clarity.
