Rapid-Scan Operando Infrared Spectroscopy

Arantxa Davó-Quiñonero, Agustín Bueno-López*, Dolores Lozano-Castelló, Alan J. McCue, James A. Anderson

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Novel methodology, referred to as rapid-scan operando, has been demonstrated to be a highly powerful tool for studying reaction mechanisms in heterogeneous catalysis, because it combines rapid scan for IR monitoring in the milliseconds time frame and operando methodology. As proof of concept, the NOx–CO and NOx–H2 reactions were studied as model catalyzed reactions with practical interest for removal of NOx in diesel exhausts. Rapid-scan operando experiments confirmed state-of-the-art knowledge concerning the reaction mechanisms and, more importantly, allowed us to elucidate, for the first time, the different roles of the surface hydroxy groups depending on the reductant used (CO or H2). Moreover, this new tool was used to distinguish the behavior of carbonates and nitrites under reaction conditions that could not be monitored by conventional IR spectroscopy approaches owing to overlap of their absorbance bands.

Original languageEnglish
Pages (from-to)1905-1908
Number of pages4
JournalChemCatChem
Volume8
Issue number11
Early online date19 May 2016
DOIs
Publication statusPublished - 7 Jun 2016

Keywords

  • heterogeneous catalysis
  • IR spectroscopy
  • operando
  • rapid scan
  • reaction mechanisms

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Catalysis

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  • Cite this

    Davó-Quiñonero, A., Bueno-López, A., Lozano-Castelló, D., McCue, A. J., & Anderson, J. A. (2016). Rapid-Scan Operando Infrared Spectroscopy. ChemCatChem, 8(11), 1905-1908. https://doi.org/10.1002/cctc.201600302