Synthesis and hydrogen permeation properties of ultrathin palladium-silver alloy membranes

Hydrogen Permeation of Thin Pd-25Ag Membranes Prepared by Cold Rolling and Microsystem Technology

“…The thin Pd-25Ag alloy membranes prepared by the microsystem technology show much higher values than those supported by porous materials. [32][33][34][35] For example, the thickness normalized permeation flux of the 1.2 mm-thick Pd-25Ag membrane prepared in this work was one order higher than that of the 1.43 mm-thick membrane at 673 K in the literature.…”

“…Figure 8 plots the hydrogen permeation flux through Pd25Ag membranes with the thickness less than 3 mm from this work and the literatures. [30][31][32][33][34][35][36] The hydrogen permeation flux using the hydrogen feed pressure of 10 5 Pa. The hydrogen permeation flux was normalized by the membrane thickness for comparisons.…”

Microfabrication of palladium-silver alloy membranes for hydrogen separation

“…Due to the high accuracy of the deposition rate, sputtering has frequently been used to fabricate micron-thick Pd-Ag alloy layers [11], [12]. Mostly, such layers are obtained by sputtering from a single composite target of Pd-Ag.…”

Preparation and characterization of palladium-based composite membranes by electroless plating and magnetron sputtering

“…It was suggested that the defects of the Pd composite membrane could have an effect on the value of the power of H 2 pressure. Li, et al [9,10] reported the H 2 permeation property of the thin (<0.5 m) Pd and Pd-Ag alloy composite membrane at the permeation temperatures of <300 • C. Those membranes were prepared by the sputtering technique. In their work, high the power of H 2 pressure (>0.5) was attributed to the surface adsorption/desorption steps of H 2 .…”

“…Electroless plating [3][4][5][6][7], sputtering [8][9][10] and chemical vapor deposition [11][12][13][14][15] have been explored to produce Pd-based composite membranes.…”