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Publication Detail
Application of a GaPO4 Crystal Microbalance for the Detection of Coke Formation in High-Temperature Reactors and Solid Oxide Fuel Cells
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Millichamp J, Ali E, Brandon NP, Brown RJC, Hodgson D, Kalyvas C, Manos G, Brett DJL
  • Publisher:
    AMER CHEMICAL SOC
  • Publication date:
    06/07/2011
  • Pagination:
    8371, 8375
  • Journal:
    IND ENG CHEM RES
  • Volume:
    50
  • Issue:
    13
  • Print ISSN:
    0888-5885
  • Language:
    EN
  • Keywords:
    DEFECT CHEMISTRY
  • Addresses:
    Brett, DJL
    UCL
    Dept Chem Engn
    Ctr CO2 Technol
    London
    WC1E 7JE
    England
Abstract
Piezoelectric crystal microbalance devices based on gallium orthophosphate (GaPO4) have recently become commercially available. This material allows for operation at over 900 degrees C and therefore has potential as an analytical technique for the study of surface reactions at high temperatures. This paper describes preliminary work to assess the suitability of this technology for such applications. Change in oscillation frequency associated with temperature and gaseous environment is studied, and the ability to detect coke formation on a Ni-modified crystal is demonstrated. These results suggest that the technology can be developed as a low cost, high sensitivity gravimetric sensor for monitoring surface processes in high temperature chemical reactors such as reformers and solid oxide fuel cells (SOFCs)
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