Catalysis Letters

, Volume 2, Issue 2, pp 97–104

Non-intrusive temperature measurement of the components of a working catalyst by neutron resonance radiography

  • J. C. Frost
  • P. Meehan
  • S. R. Morris
  • R. C. Ward
  • J. Mayers
Article

DOI: 10.1007/BF00774591

Cite this article as:
Frost, J.C., Meehan, P., Morris, S.R. et al. Catal Lett (1989) 2: 97. doi:10.1007/BF00774591

Abstract

Neutron resonance radiography is the first practical method capable of detecting microscopic temperature inhomogeneities within a catalyst under realistic operating conditions. The method is non-intrusive and can be used with powdered or pelleted catalysts in standard stainless steel reactors. The neutron/nuclei interaction yields a resonance absorption spectrum characteristic of the element involved and the temperature can be determined directly from thermal broadening of the spectrum. A 14% Pt/samaria catalyst was used for CO hydrogenation under conditions which produced a controlled exotherm of between 20 and 50 ° C. The thermal broadening of the platinum resonance peak at 11.9 eV and the samarium resonance peak at 3.4 eV provided a measure of the temperature of the metal and support phases. Typical values obtained for the metal and support temperature were 420±6 ° C and 424±2 ° C respectively compared to a thermocouple reading of 424±1 ° C.

Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1989

Authors and Affiliations

  • J. C. Frost
    • 1
  • P. Meehan
    • 1
  • S. R. Morris
    • 1
  • R. C. Ward
    • 1
  • J. Mayers
    • 2
  1. 1.BP Research International, Sunbury-on-ThamesMiddx.UK
  2. 2.Rutherford-Appleton LaboratoryChilton, DidcotUK