Bifunctional Europium for Operando Catalyst Thermometry in an Exothermic Chemical Reaction

Bas Terlingen, Tjom Arens, Thomas P van Swieten, Freddy T Rabouw, Tim Prins, Michiel M de Beer, Andries Meijerink, Mathieu Ahr, Eline M Hutter, Coert van Lare, Bert Marc Weckhuysen

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Often the reactor or the reaction medium temperature is reported in the field of heterogeneous catalysis, even though it could vary significantly from the reactive catalyst temperature. The influence of the catalyst temperature on the catalytic performance and vice versa is therefore not always accurately known. We here apply EuOCl as both solid catalyst and thermometer, allowing for operando temperature determination. The interplay between reaction conditions and the catalyst temperature dynamics is studied. A maximum temperature difference between the catalyst and oven of +16 °C was observed due to the exothermicity of the methane oxychlorination reaction. Heat dissipation by radiation appears dominating compared to convection in this set-up, explaining the observed uniform catalyst bed temperature. Application of operando catalyst thermometry could provide a deeper mechanistic understanding of catalyst performances and allow for safer process operation in chemical industries.

Original languageEnglish
Article numbere202211991
Pages (from-to)1-6
JournalAngewandte Chemie-International Edition
Volume61
Issue number52
Early online date3 Nov 2022
DOIs
Publication statusPublished - 23 Dec 2022

Bibliographical note

Funding Information:
This work is part of the Advanced Research Center Chemical Building Blocks (ARC CBBC), which is co‐founded and co‐financed by the Netherlands Organisation for Scientific Research (NWO) and the Netherlands Ministry of Economic Affairs and Climate Policy. Furthermore, the authors would like to thank Bart Zwijnenburg (Nobian) for helping with finalizing the manuscript.

Publisher Copyright:
© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.

Keywords

  • Europium
  • Heterogeneous Catalysis
  • Methane
  • Operando Methods
  • Thermometry

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