The effect of copper content on the reactivity of Cu/Co6Al 2 solids in the catalytic steam reforming of methane reaction

Doris Homsi, Samer Aouad, Cédric Gennequin, John El Nakat, Antoine Aboukaïs, Edmond Abi-Aad

Research output: Contribution to journalArticlepeer-review

Abstract

The steam reforming of methane over Cu/Co6Al2 mixed oxides with different copper contents was studied. The Co6Al 2 support was prepared via the hydrotalcite route. It was thermally stabilized at 500 °C, impregnated with 5 wt.%, 15 wt.% or 25 wt.% copper using copper (II) nitrate Cu(NO3)2·3H2O precursor and then calcined again at 500°C under an air flow. The impregnation of copper enhanced significantly the reactivity of the solids in the considered reaction. The 5Cu/Co6Al2 solid was the most reactive one, with a methane conversion of 96% at 650°C. The selectivities of H2 and CO2 were also better for the catalyst containing 5 wt.% copper compared to higher copper loadings. The decrease in the catalytic reactivity with increasing the copper content was attributed to the formation of agglomerated and less reactive CuO species, which were detected by XRD and TPR analyses.

Original languageEnglish (US)
Pages (from-to)454-458
Number of pages5
JournalComptes Rendus Chimie
Volume17
Issue number5
DOIs
StatePublished - May 2014

Keywords

  • Copper
  • Hydrotalcites
  • Methane steam reforming
  • TPR
  • XRD

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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