The water-gas shift reaction over CeO/CuO: Operando SSITKA-DRIFTS-mass spectrometry study of low temperature mechanism

A. Lopez Camara*, Sarayute Chansai, C. Hardacre, A. Martinez-Arias

*Corresponding author for this work

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

An inverse CeO2/CuO catalyst has been investigated by operando steady-state isotopic transient kinetic analysis (SSITKA) in combination with diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) under 3% CO +3% H2O reactant mixture at 473 K with the aim of determining intermediates involved in the water gas shift reaction at relatively low temperatures. Among the various species detected in the infrared spectra which may be involved in the reaction, i.e. formates, copper carbonyls and carbonates, a particular type of carbonate species is identified as a reaction intermediate on the basis of detailed analysis of the spectra during isotopic exchange in comparison with the change in the corresponding isotopically labelled CO2 product. 

Original languageEnglish
Pages (from-to)4095-4101
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number8
Early online date18 Jun 2013
DOIs
Publication statusPublished - 06 Mar 2014

Keywords

  • CeO2/CuO catalyst
  • WGS
  • Operando SSITKA-DRIFTS-MS
  • TRANSFORM INFRARED-SPECTROSCOPY
  • PT/CEO2 CATALYST
  • IN-SITU
  • ROOM-TEMPERATURE
  • CARBON-MONOXIDE
  • CERIA
  • COPPER
  • ADSORPTION
  • FORMATE
  • HYDROGEN

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