Figure 7
Pt L3-edge fluorescence XANES spectra of 1 wt% (top) and 0.5 wt% (bottom) Pt samples dispersed on CZY with traces of other heavy elements, submitted to oxidizing (20% O2/He) and reducing (3% H2/He) atmospheres at 67 K. Spectra of 1 wt% Pt samples are measured in 6 s, and those of 0.5 wt% Pt samples in 5.8 s. |