Preparation and characterization of thin-film Pd-Ag supported membranes for high-temperature applications

E. Fernandez, K. Coenen, A. Helmi, J. Melendez, J. Zuñiga, D. A. Pacheco Tanaka, M. Van Sint Annaland, F. Gallucci

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

This paper reports the preparation, characterization and stability tests of thin-film Pd-Ag supported membranes for high-temperature fluidized bed membrane reactor applications. Various thin-film supported membranes have been prepared by simultaneous Pd-Ag electroless plating and have been initially sealed with a sealing procedure previously validated for Water gas shift (WGS) application (400 °C). The membranes have been characterized for single gas and mixed gas permeation, and for methane steam and autothermal reforming in a fluidized bed membrane reactor at 550-600 °C using a Ru-based catalyst. In addition, the performance of these membranes was compared to commercial membranes from REB Research & Consulting under the same reaction conditions. The applied sealing showed nitrogen leaks at 600 °C and different sealing approaches were tested solving this problem. Finally, also the long-term stability of the thin-film Pd-Ag supported membrane at 600 °C has been investigated.

Original languageEnglish
Pages (from-to)13463-13478
Number of pages16
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number39
DOIs
Publication statusPublished - 19 Oct 2015

Keywords

  • Autothermal steam reforming
  • Fluidized bed membrane reactor
  • High temperature sealing
  • Membrane stability
  • Palladium membrane preparation

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