Effects of Annealing Conditions on Morphology and Permeability of Palladium Membrane

Abstract:

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The palladium membranes were fabricated by mean of electroless plating method which provided thin and uniform film on a tubular alumina porous support. Subsequently, the annealing process which is one of the effective ways to enhance the permeability of membrane was performed in the temperature range of 600-800°C. The annealing temperature and time were found to have influence on membrane microstructure and its performance. Palladium annealed at 700°C for 8 hrs in nitrogen atmosphere had the highest hydrogen permeability and separation factor when operated at 600°C. The membrane morphologies observed by SEM showed that the sample treated at higher temperature had lower surface roughness. The annealed palladium composite membrane at 800°C revealed that some voids which occurred during electroless plating process were enlarged and caused the lower separation factor.

Info:

Periodical:

Edited by:

Hyungsun Kim, Jian Feng Yang, Chuleol Hee Han, Somchai Thongtem and Soo Wohn Lee

Pages:

25-28

DOI:

10.4028/www.scientific.net/MSF.695.25

Citation:

K. Hemra et al., "Effects of Annealing Conditions on Morphology and Permeability of Palladium Membrane", Materials Science Forum, Vol. 695, pp. 25-28, 2011

Online since:

July 2011

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$35.00

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