In situ neutron diffraction studies of non-thermal effects in materials during microwave irradiation

F. Marcela Piña-Sandoval, Andrew Harrison, Gavin Whittaker, Richard Ibberson, Gary Bond

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We have developed an apparatus to perform in situ X-ray or neutron diffraction experiments on materials during microwave irradiation, and thus monitor structural transformation and also probe temperature in a phase-specific manner through determination of the cell parameters. Here we report work on the transition from orthorhombic (ferroelectric) phase to tetragonal (paraelectric) of KNbO3 under conventional and microwave heating to determine whether there is any significant difference. We also report experiments on supported catalysts to explore the possibility of significant temperature gradients between the catalyst particles with a high dielectric susceptibility and an alumina support with a low dielectric susceptibility.

Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Microwave and High Frequency Heating
EditorsCristina Leonelli, Paolo Veronesi
PublisherMicrowave Application Group
Pages80-83
Number of pages4
ISBN (Electronic)8890180420, 9788890180422
StatePublished - 2005
Externally publishedYes
Event10th International Conference on Microwave and High Frequency Heating 2005 - Modena, Italy
Duration: Sep 12 2005Sep 15 2005

Publication series

NameProceedings of the 10th International Conference on Microwave and High Frequency Heating

Conference

Conference10th International Conference on Microwave and High Frequency Heating 2005
Country/TerritoryItaly
CityModena
Period09/12/0509/15/05

Keywords

  • KNbO3
  • Microwave heating
  • Phase transition
  • Supported catalyst
  • Temperature gradients

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