[macman104]

I am going to be working on a synthesis doing a hydrogenation.  The previous literature reports 5% Pd-C, H2.  I find palladium on activated charcoal and palladium on carbon.  I was wondering if someone could indicate what the difference is exactly.  The reaction is the hydrogenation of dihydroxybenzoquinone to tetrahydroxybenzene.  Also, when I take a look a sigma-aldrich page for heterogeneous pd catalysts, I'm overwhelmed by the choices for carbon and charcoal types.   What do things like "wet support" or "Degussa type E101 NE/W".  I found that Degussa is a supplier of chemicals, is that just saying this is the equivalent?