Alloying Pt with a second metal (i.e., Co, Cu, Ga, Mn, Sn and Zn) forming bimetallic catalysts, has proven to be effective in enhancing catalyst selectivity and activity in alkane dehydrogenation, often by inhibiting catalyst deactivation via coke formation. Only a few studies of PtGe alloy catalysts have been reported, however, thus the results below, in addition to probing the effects of Ge addition on sub-nano clusters, may provide insights useful in nano-catalysis as well.