Fabrication of the composite Pd-Ag-Ni membrane by the electroless plating technique for H2 purification

Mina Omidifar and Ali Akbar Babaluo

Renewable Energy, 2025, vol. 243, issue C

Abstract: This work presents an attempt to prepare low-cost hydrogen separation membranes by lowering the Pd content. For this purpose, Ni was introduced as a third element into the Pd-Ag system, resulting in a dense composite Pd-Ag-Ni ternary alloy membrane. The membrane was fabricated using an innovative approach that utilized the organic-inorganic activation process in the sequential electroless plating (ELP) method on a modified α-Al2O3 support. This membrane had an H2 permeance of 4.57 × 10−7 mol m−2 s−1 Pa−1 and infinite H2/N2 selectivity at 500 °C and 100 kPa of pressure difference. The H2 permeance of the membrane is one order of magnitude higher than that reported in the literature. The presence of different impurities in the gas feed under various operating conditions adversely affected the H2 permeation flux, stage cut, and H2 recovery of this membrane. Finally, the membrane demonstrated stable H2 permeation flux over more than 150 h.

Keywords: H2 purification; Organic-inorganic activation process; Sequential electroless plating; Pd-Ag-Ni composite membrane (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:243:y:2025:i:c:s0960148125002289

DOI: 10.1016/j.renene.2025.122566

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