CICECO » "Superpermeability" and "pumping" of atomic hydrogen through palladium membranes

authors	Zheludkevich, ML; Gusakov, AG; Voropaev, AG; Kozyrski, EN; Raspopov, SA; Vecher, AA
nationality	International
journal	JOURNAL OF MEMBRANE SCIENCE
author keywords	atomic hydrogen; permeation; palladium membrane; thermodynamical model; superpermeability
keywords	MOLECULAR-OXYGEN
abstract	Permeation of atomic as well as molecular hydrogen through palladium membranes has been investigated experimentally in the temperature range from room temperature to 200 degrees C and at a higher incident flux of hydrogen atoms on palladium surface than in previous studies. The results demonstrate that phenomena of 'superpermeability' and 'pumping' of atomic gases through metal membranes are of a common nature. A theoretical model based on chemical thermodynamics and diffusion theory adequately describes the quantitative relationships observed in experiments. It was found that permeability of atomic hydrogen depends strongly on the magnitude of surface incident flux and membrane temperature. (c) 2008 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE BV
issn	0376-7388
year published	2008
volume	320
issue	1-2
beginning page	528
ending page	532
digital object identifier (doi)	10.1016/j.memsci.2008.04.045
web of science category	Engineering, Chemical; Polymer Science
subject category	Engineering; Polymer Science
unique article identifier	WOS:000257834700061