Scott,
I believe "Rayney" is a brand name, skeletal is the generic name
for sponge like formations in a catalyst. They avoid the Casimir attraction
that opposes a one step construction of a skeletal catalyst by first forming an
alloy between a hard and soft metal and then leaching out the softer metal in a
second step. Plain atmosphere diffusing inside these leached out cavities can
ignite in the more energetic (smaller pore) skeletal catalysts. - pyrophoric-Regards Fran
