Selective hydrogen absorption from gaseous mixtures by BCC Ti-V alloys

S. Suwarno, Y. Gosselin, J. K. Solberg, J. P. Maehlen, M. Williams, B. Krogh, B. T. Børresen, E. Rytter, E. Ochoa-Fernández, V. A. Yartys*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Hydrogen absorption behaviour of the BCC Ti-V alloys has been studied as related to their potential application for the selective hydrogen absorption from mixtures with active gases containing CO and steam at high temperatures. Alloys and their hydrides were characterised using Scanning Electron Microscopy (SEM), Thermal Desorption Spectroscopy (TDS), Temperature Programmed Reaction (TPR) and in situ synchrotron X-ray powder diffraction (SR-XRD). BCC Ti 0.8V0.2 and Ti0.9V0.1 were able to absorb 3.95 wt.% H by forming a FCC type hydride γ-(Ti,V)H2. Nanoparticles of Pd and Pd/Pt were electroless deposited on the surface of the hydrides to catalyse hydrogen absorption. TPR tests showed that such alloys were capable of absorbing hydrogen even when substantial amounts of CO and H 2O were present in the gas stream. Nanoparticles of Pd/Pt provide a better performance as compared to Pd alone. In situ SR-XRD has been used to probe the mechanisms of hydrogenation and dehydrogenation.

Original languageEnglish
Pages (from-to)4127-4138
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number5
DOIs
Publication statusPublished - Mar 2012
Externally publishedYes

Keywords

  • Hydrogen production
  • Metal hydrides
  • Steam reforming
  • Synchrotron X-ray diffraction
  • Titanium
  • Vanadium

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