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Dependence of hydrogen flux on the pore size and plating surface topology of asymmetric Pd-porous stainless steel membranes by Ivan P. Mardilovich; Erik Engwall; Yi Hua Ma is a Environmental Science article available to read on EtoBox.

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The influence of the support properties on the characteristics of Pd/PSS composite membranes has been evaluated for a large group of membrane samples prepared by electroless plating. The Hz permeation in the membranes was found to follow Sievert's law between 325-500°C. The steady state H2 flux was stable for over 200 h. The hydrogen permeance was measured at 350°C with a 1 -atm pressure difference and ranged from 20.0 to 5.1 m3/(m'.h.atmos) for a Pd layer thickness of 11.7 and 33.8 pm, respectively. The thickness of the membranes and therefore the permeance obtained was dependent on the size of the largest pores present in the support. The thickness of the Pd layer was approximately three times the dimension of the largest pores in the support, consistent with the previous theoretical results of Ma et al. [3].

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Author

Ivan P. Mardilovich; Erik Engwall; Yi Hua Ma

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0011-9164)

Published

2002

Language

EN

Field

Environmental Science (Physical Sciences)