Application of a GaPO4 crystal microbalance for the detection of coke formation in high-temperature reactors and solid oxide fuel cells

Jason Millichamp, Ebrahim Ali, Nigel P. Brandon, Richard J.C. Brown, David Hodgson, Christos Kalyvas, George Manos, Daniel J.L. Brett

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Piezoelectric crystal microbalance devices based on gallium orthophosphate (GaPO4) have recently become commercially available. This material allows for operation at over 900 °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)

Original languageEnglish
Pages (from-to)8371-8375
Number of pages5
JournalIndustrial & Engineering Chemistry Research (IECRED)
Volume50
Issue number13
DOIs
Publication statusPublished - 6 Jul 2011

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