Electroless Plating of Pd on Macro-Porous Alumina Support for H2 Purification

Kowit Lertwittayanon; Onuma Truektrong; Wanita Inthanu; Wirote Youravong

doi:10.4028/www.scientific.net/KEM.675-676.556

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 675-676Electroless Plating of Pd on Macro-Porous Alumina...

Electroless Plating of Pd on Macro-Porous Alumina Support for H₂ Purification

Abstract:

In this work, Pd metal layer was deposited on in-house prepared macro-porous disc alumina support by electroless plating. The in-house prepared support were repeatedly seeded for 4 cycles to obtain Pd nuclei before repeatedly electroless plated for 4 cycles. The 4-cycle Pd plating was to obtain the full layer of Pd metal observing from changing support surface from black to light grey. The plated membrane samples were annealed at 550 and 600oC for using in high-temperature H₂ separation. The annealed samples were observed morphology by SEM and confirm the occurrence of Pd layer with EDS. The SEM images revealed incomplete Pd layer. The over 4 cycles of plating were needed to form complete Pd layer since the numerous Pd ions diffused into macro-pores alumina support instead of depositing on the surface of macro-porous support. The higher annealing temperature of 600oC led to denser layer of Pd with the presence of small cracks due to the contraction of Pd particles.

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Periodical:

Key Engineering Materials (Volumes 675-676)

Pages:

556-559

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.675-676.556

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Online since:

January 2016

Authors:

Kowit Lertwittayanon*, Onuma Truektrong, Wanita Inthanu, Wirote Youravong

Keywords:

Alumina, Electroless Plating, Hydrogen Purification, Macropore, Palladium

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