fig3

Figure 3. Catalytic performance of Pt/PN-CeO₂ and Pt/NR-CeO₂ for the AWS of benzaldehyde. (A) Conversions of benzaldehyde and selectivity of benzyl alcohol and benzoic acid; (B) H₂ yields; (C) Ratios of H₂ generation rates from PhCHO to PhCDO as well as the ratios of H₂ generation rates from H₂O to D₂O; (D) Lnr, derived from the H₂ generation rate versus reaction time, as a function of 1/T over various catalysts; (E) and (F) Catalytic stability of the Pt/PN-CeO₂ catalysts for the AWS reaction. Reaction conditions for (A), (B), (D), (E) and (F): PhCHO (1 mmol), H₂O (0.5 mL), 1, 4-dioxane (1 mL), NaOH (2.5 mmol), catalysts (30 mg), 0.5 MPa N₂, 180 °C and 10 h. Reaction conditions for (C): PhCHO/PhCDO (1 mmol), H₂O/D₂O (0.5 mL), 1, 4-dioxane (1 mL), NaOH (2.5 mmol), catalysts (30 mg), 0.5 MPa N₂, 180 °C and 10 h. AWS: Aldehyde-water shift.