Figure 14
Raw absorbance data for the Cl K- and Pd L3-edge derived from 5 wt% Pd/Al2O3 catalysts. The bottom spectrum is that derived from a dry catalyst derived from a chlorine-free precursor. Above this is the equivalent dry spectrum from a PdCl2-derived catalyst stuck onto carbon tape and measured in flowing He at RT. This catalyst is then shown having been made `wet' in the solvent (EtOH:H2O 50:50) within the sample environment previously outlined. The top spectrum is that recorded after heating this catalyst under the flowing (0.1 ml min−1) solvent mixture to 353 K. |