Table 3 Summary of the thermodynamic and kinetic parameters of furfural hydrogenation on Pd/C at 0.25–10 bar H2 and room temperature

From: Impact of hydronium ions on the Pd-catalyzed furfural hydrogenation

pH

\({K}_{F}^{o}\)a [\({G}_{F}^{o}\) (kJ mol−1)]

\({K}_{{H}_{2}}^{o}\)b [\({G}_{{H}_{2}}^{o}\) (kJ mol−1)]

\({K}_{1}^{o}\)c [\({G}_{1}^{o}\) (kJ mol−1)]

\({k}_{2}\)(s−1)c

1.6

2297 ± 282

[−19.2 ± 0.3]

9.03 × 10−2 [5.97]

10.3 × 10−4 [16.4]

1322

3

11.9 × 10−2 [5.27]

8.52 × 10−4 [17.0]

1127

5.8

18.9 × 10−2 [4.13]

4.43 × 10−4 [18.5]

616

7

21.5 × 10−2 [3.80]

2.56 × 10−4 [19.8]

357

  1. The corresponding standard Gibbs free energy (\({{{{{{\boldsymbol{G}}}}}}}^{{{{{{\boldsymbol{o}}}}}}}\)) is given in square brackets.
  2. aObtained from regression of furfural adsorption isotherms with the Langmuir model.
  3. bMeasured by kinetic analysis of H/D exchange between H2 and D2O.
  4. cAcquired by furfural hydrogenation kinetic model fitting.