Dataset of Paper "Modeling of H2 Permeation through Electroless Pore-Plated Composite Pd Membranes Using Computational Fluid Dynamics": Elemental composition of the membrane estimated by EDS at diverse stages of the fabrication process. Main permeation parameters at 375 °C and different H2 feed molar fractions (XH2) obtained from experimental data: y-intercept and H2 permeance (K). Comparison of the experimental and predicted values of permeate flow for pure N2 streams for different operating conditions with the PSS support (in-out configuration). Experimental and predicted H2 permeate fluxes at a constant temperature (T = 375 °C) but different pressures and H2 molar fractions in the feed stream (in–out configuration). Experimental and predicted H2 permeate fluxes at a constant temperature (T = 375 °C) but different pressures and H2 molar fractions in the feed stream (out– in configuration). Two mesh files (.msh file) for the membrane permeator: Out–in configuration and in–out configuration.