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The hydrogen flux through the foil (thickness 30 μm) with the composition Pd–6.0 wt % In–0.5 wt % Ru in the temperature range from 593 to 823 K is studied. The permeability of Pd–In–Ru foil at 823 K is 3 times higher than the foil of the Pd–23 wt % Ag alloy. The H2 flux in the Pd–In–Ru foil is controlled by the diffusion of atomic hydrogen in the membrane bulk. The apparent activation energy of the...