Table 2. Au and Pt surface and bulk composition of the AuPt/perovskite catalysts from MP-AES and XPS analysis.
Support | Au and Pt content (wt%) | Bulk Au/Pt ratio from MP-AES | Surface Au/Pt ratio from XPS |
LaCrO3 | 0.55 (Au), 0.55 (Pt) | 1.0 | 0.6 |
LaMnO3 | 0.47 (Au), 0.46 (Pt) | 1.0 | 1.4 |
LaFeO3 | 0.46 (Au), 0.47 (Pt) | 1.0 | 1.0 |
LaCoO3 | 0.55 (Au), 0.54 (Pt) | 1.0 | 0.6 |
LaNiO3 | 0.50 (Au), 0.48 (Pt) | 1.1 | 0.9 |