Pd membrane based reactors have the potential to generate high purity H₂ in a single unit for stationary and mobile applications spanning power stations, soldier-power, and vehicles. The major challenges facing the deployment of these reactors include improvement of permeation fluxes and reduction of cost of the composite membranes. Previous studies have shown that these objectives can be achieved by depositing a thin Pd layer (< 5 microns) on a porous support, but in most cases this is accompanied by a drop in permselectivity due to defect formation. In our work we have synthesized a novel type of Pd membrane called the “Pd Nanopore” membrane which has yielded very encouraging results in terms of H₂ flux, permselectivity & long term stability of ultrathin membranes as compared to the conventional “top layer” membranes. We are currently applying the nanopore membrane in both high temperature separator and packed-bed membrane reactor (PBMR) configurations to generate high purity H₂. Catalytic ammonia decomposition on Ni/Al₂O₃ catalyst and methanol reforming on Cu/ZnO/Al₂O₃ catalyst are tests we are investigating which span a range of hydrogen volume productivities. Experimental & modeling results in the PBMR configuration for both systems will be discussed in detail in terms of reactor productivity, hydrogen utilization, and fuel conversion.