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Perspectives of Suspension Plasma Spraying of Palladium Nanoparticles for Preparation of Thin Palladium Composite Membranes

Boeltken, Tim and Soysal, Dennis and Lee, Seungcheol and Straczewski, Grazyna and Gerhards, Uta and Peifer, Peter and Arnold, Johannes and Dittmeyer, Roland (2014) Perspectives of Suspension Plasma Spraying of Palladium Nanoparticles for Preparation of Thin Palladium Composite Membranes. Journal of Membrane Science, 468, pp. 233-241. Elsevier. DOI: 10.1016/j.memsci.2014.06.003 ISBN 0376-7388 ISSN 0376-7388

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Official URL: http://www.journals.elsevier.com/journal-of-membrane-science/

Abstract

Suspension plasma spraying (SPS) of Pd nanoparticles was evaluated as a new method for coating of dense Pd films for H2 separation on porous substrates. The substrates were prepared by coating porous sinter metal disks with a porous yttria stabilized zirconia (YSZ) layer acting as a barrier against intermetallic diffusion between the sinter metal and the Pd membrane (diffusion barrier layer, DBL). Before applying the Pd coating, the sinter metal substrates were characterized by N2 permeance measurements. The maximum pore sizes before and after coating of the DBL were determined. For SPS of Pd, particles with diameters in the range between 250 nm and 550 nm were suspended in ethyl cellulose containing diethylene glycol monobutyl ether solution. A wide process parameter field was tested in the SPS. After Pd coating, the membrane morphology was characterized with scanning electron microscopy (SEM) and electron probe microanalysis (EPMA), and the membrane performance was evaluated with N2 and H2 permeation measurements. The thickest Pd layer (9.5 µm) showed an ideal H2/N2 permselectivity of 60 at 350 °C and a H2 permeability of 1.2×10−7exp(−1392/T) mol m−1 s−1 Pa−0.5. Yet rather thick Pd layers of around 10 µm were required to close the pores of the rough YSZ layers, but with further optimizations, SPS appears to be a promising new way for the fabrication of robust Pd coatings on porous substrates. A particular advantage is seen in the very quick deposition.

Item URL in elib:https://elib.dlr.de/90387/
Document Type:Article
Title:Perspectives of Suspension Plasma Spraying of Palladium Nanoparticles for Preparation of Thin Palladium Composite Membranes
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Boeltken, TimIMVT, KITUNSPECIFIED
Soysal, DennisDLRUNSPECIFIED
Lee, SeungcheolIKFT, KITUNSPECIFIED
Straczewski, GrazynaIMVT, KITUNSPECIFIED
Gerhards, UtaIMVT, KITUNSPECIFIED
Peifer, PeterIMVT, KITUNSPECIFIED
Arnold, JohannesDLR-Institut für Technische ThermodynamikUNSPECIFIED
Dittmeyer, RolandIMVT, KITUNSPECIFIED
Date:15 October 2014
Journal or Publication Title:Journal of Membrane Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:468
DOI :10.1016/j.memsci.2014.06.003
Page Range:pp. 233-241
Editors:
EditorsEmail
Zydney, A.L.Pennsylvania State University, University Park, Pennsylvania, USA
Publisher:Elsevier
ISSN:0376-7388
ISBN:0376-7388
Status:Published
Keywords:Composite palladium membrane; Suspension plasma spraying; Thermal spraying of palladium; Diffusion barrier layer; Hydrogen separation
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Arnold, Dr.-Ing. Johannes
Deposited On:27 Aug 2014 10:46
Last Modified:27 Aug 2014 10:46

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