The adsorption/absorption of hydrogen at room temperature by palladium, 16% silver-palladium and 5% ruthenium-palladium foils was studied using thermal desorption spectroscopy. Hydrogen readily diffused in the palladium and desorbed as one broad peak at about 650 K. Hydrogen also diffuses in the 16% silver-palladium foil and in the 5% rutheniumpalladium foil but with a smaller diffusion constan...

The permeance of Pd–Cu alloys containing 40, 53, 60, and 80 wt.% Pd has been determined over the 623–1173 K temperature range for H2 partial pressure differences as great as 2.6 MPa. Pure palladium and copper membranes were also evaluated. The Pd–Cu alloys exhibited predictable permeances that reflected the crystalline phase structures as shown in the binary phase diagram. Under conditions of f...

The purpose of the article is to reveal role thickness layer lead-palladium alloy deposited on a copper-palladium membrane in processes cathodic injection and anodic extraction atomic hydrogen.The objects study were ~ 4 μm thick film electrodes obtained by magnetron sputtering target with composition 56 at. % Cu 44 Pd. studies carried out cyclic voltammetry double step anodic-cathodic chronoamp...

Palladium has long been recognised for its hydrogen sorption and separation capabilities. Alloying with different metals to produce binary alloys has been shown to further improve many of its essential properties significantly. Currently palladium-silver alloys are used commercially for the hydrogen purification process, however, other binary alloys have also been shown to significantly improve...

Three different approaches to detecting hydrogen in helium streams were assessed: thermal conductivity, atmospheric sampling using a mass spectrometer, and permeation through a palladium/silver membrane. The thermal conductivity detection system utilized an assembly of four cells fitted with filaments wired to make a Wheatstone bridge. Pure helium flowed through two of the cells. Helium contain...