• DocumentCode
    3604772
  • Title

    Conductometric Sensing of H2 by Chromium Niobate

  • Author

    Murthy, A. Sree Rama ; Gnanasekar, K.I. ; Jayaraman, V. ; Umarji, A.M. ; Gnanasekaran, T.

  • Author_Institution
    Chem. Group, Indira Gandhi Centre for Atomic Res., Kalpakkam, India
  • Volume
    15
  • Issue
    12
  • fYear
    2015
  • Firstpage
    7054
  • Lastpage
    7060
  • Abstract
    Investigations on chromium niobate (CrNbO4) have shown that the material responds to a wide hydrogen concentration range of 0.01%-0.40% at 613 K. The conductivity of CrNbO4 is independent of oxygen partial pressure and offers to be a promising candidate for monitoring H2 in radioactive spent fuel storage facilities. Reduction of metal ions to lower valence states during hydrogen sensing was evidenced by X-ray photoelectron spectroscopic studies.
  • Keywords
    X-ray photoelectron spectra; chromium compounds; gas sensors; hydrogen; CrNbO4; H2; H2 monitoring; X-ray photoelectron spectroscopy; conductivity; conductometric sensing; metal ion reduction; oxygen partial pressure; radioactive spent fuel storage facilities; temperature 613 K; valence states; wide hydrogen concentration range; Argon; Chromium; Conductivity; Hydrogen; Resistance; Temperature sensors; Chromium niobate; X-ray photoelectron spectroscopy; hydrogen sensing;
  • fLanguage
    English
  • Journal_Title
    Sensors Journal, IEEE
  • Publisher
    ieee
  • ISSN
    1530-437X
  • Type

    jour

  • DOI
    10.1109/JSEN.2015.2470102
  • Filename
    7214207
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3604772