Ultrathin Palladium Membranes Prepared by a Novel Electric Field Assisted Activation
Abstract
Ultra-thin Pd composite membranes with a thickness of 1 μm were prepared by a novel electric-field assisted activation technique followed by electroless deposition of Pd on a hollow-fiber α-alumina support. The novel activation method places Pd precursors and a reducing agent on opposite sides of a porous substrate and uses an electric field to cause migration of Pd ions to the outer surface where they are reduced to form seeds in high density in a narrow spatial region. The resulting membranes showed a high hydrogen permeance in the range of 4.0–5.0 × 10{sup −6} mol m{sup −2} s{sup −1} Pa{sup −1} and stable H{sub 2}/N{sub 2} selectivity of 3000–9000 during stability tests for 150 h at 733 K with H{sub 2} flow. The formation of the thin, defect-less and robust Pd layer can be ascribed to the evenly distributed Pd seeds on the support layer and the enhanced bonding between the Pd layer and the support layer resulting from the strong anchoring of the Pd seeds onto the support in the new activation step.
- Authors:
- Publication Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1053697
- Report Number(s):
- TPR-3532
Journal ID: ISSN 0376-7388
- DOE Contract Number:
- DE-FE-0004000
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Membrane Science
- Additional Journal Information:
- Journal Volume: 369; Journal Issue: 1-2; Journal ID: ISSN 0376-7388
- Publisher:
- Journal of Membrane Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 08 HYDROGEN; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Electric-field assisted activation; Electroless plating; Palladium membrane; Hydrogen separation; Alumina hollow fiber
Citation Formats
Yun, Samhun, Ko, Joon Ho, and Oyama, S Ted. Ultrathin Palladium Membranes Prepared by a Novel Electric Field Assisted Activation. United States: N. p., 2011.
Web. doi:10.1016/j.memsci.2010.12.015.
Yun, Samhun, Ko, Joon Ho, & Oyama, S Ted. Ultrathin Palladium Membranes Prepared by a Novel Electric Field Assisted Activation. United States. https://doi.org/10.1016/j.memsci.2010.12.015
Yun, Samhun, Ko, Joon Ho, and Oyama, S Ted. 2011.
"Ultrathin Palladium Membranes Prepared by a Novel Electric Field Assisted Activation". United States. https://doi.org/10.1016/j.memsci.2010.12.015.
@article{osti_1053697,
title = {Ultrathin Palladium Membranes Prepared by a Novel Electric Field Assisted Activation},
author = {Yun, Samhun and Ko, Joon Ho and Oyama, S Ted},
abstractNote = {Ultra-thin Pd composite membranes with a thickness of 1 μm were prepared by a novel electric-field assisted activation technique followed by electroless deposition of Pd on a hollow-fiber α-alumina support. The novel activation method places Pd precursors and a reducing agent on opposite sides of a porous substrate and uses an electric field to cause migration of Pd ions to the outer surface where they are reduced to form seeds in high density in a narrow spatial region. The resulting membranes showed a high hydrogen permeance in the range of 4.0–5.0 × 10{sup −6} mol m{sup −2} s{sup −1} Pa{sup −1} and stable H{sub 2}/N{sub 2} selectivity of 3000–9000 during stability tests for 150 h at 733 K with H{sub 2} flow. The formation of the thin, defect-less and robust Pd layer can be ascribed to the evenly distributed Pd seeds on the support layer and the enhanced bonding between the Pd layer and the support layer resulting from the strong anchoring of the Pd seeds onto the support in the new activation step.},
doi = {10.1016/j.memsci.2010.12.015},
url = {https://www.osti.gov/biblio/1053697},
journal = {Journal of Membrane Science},
issn = {0376-7388},
number = 1-2,
volume = 369,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 2011},
month = {Tue Mar 01 00:00:00 EST 2011}
}