Abstract
In the course of our studies on the synthesis of porous metals by de-alloying of amorphous precursors the present work was devoted to the influence of alloy composition and conditions of selective dissolution of palladium based glasses on the microstructure of the final porous material. More pronounced three-dimensional ligament structure was found at the chemically de-alloyed glasses compared to those treated electrochemically. Noticeable difference in the size of the pores and ligaments between chemically and electrochemically partially dissolved Pd30Ni50Si20 glasses compared to Pd40Ni40Si20 was also observed. Superior catalytic activity towards oxidation of ethanol of the porous metal prepared by de-alloying Pd30Ni50Si20 compared to that of the de-alloyed Pd40Ni40Si20 was established.