Table 2. Relative Peak Area of Photoelectrons from Ag3d5/2, Ag Particle Size Results, H2 Consumption in H2-TPR, TOFs at 95 °C and Arrhenius Activation Energy of the Catalysts.
catalyst | peak area of Ag3d5/21 | particle size (nm) |
H2 consumption in H2-TPR (μmol/g) | TOF at 95 °C(1/s) | activation energy (kJ/mol) | |
---|---|---|---|---|---|---|
dM2 | dC3 | |||||
Ag/TiO2 | 3.29 | 3.4 | 5.5 | 166.9 | 0.0050 | 67 |
Ag/Al2O3 | 1.34 | 11.4 | 8.1 | 97.1 | 0.0060 | 65 |
Ag/CeO2 | 1.00 | — | 13.1 | 69.9 | 0.0068 | 63 |
1The area is a relative one when that of Ag/CeO2 is set as 1.00.
2Statistic mean particle size by HRTEM,
3Calculated particle size from dispersion results by H2-TPR.