Steam reforming of toluene as model of tar compound over Mo catalysts derived from hydrotalcites

Gheorghiţa Mitran, Daniel G. Mieritz, Dong Kyun Seo

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1 Citation (Scopus)

Abstract

This study evaluated the catalytic activity of Mo catalysts derived from hydrotalcite-like compounds for steam reforming of toluene as a model compound for tar. The catalysts with 1.5, 3 and 4.5 Mo loadings (wt%), denoted as Mo1.5MgAl, Mo3MgAl and Mo4.5MgAl respectively, were prepared by coprecipitation and characterized by BET, XRD, SEM, TEM, FT-IR and UV–VIS. The results showed that toluene conversion increased with increasing molybdenum content. The hydrogen amount depended on two factors: the presence of molybdate species on the surface and the presence of aluminum cations in tetrahedral sites (Mo3MgAl), with molybdenum influence being more pronounced. The H2/CO ratio decreased at increasing temperature while, the H2/CO2 ratio increased proportionally with temperature. Mo1.5MgAl catalyst was more selective for CO2 and H2, while, Mo3MgAl and Mo4.5MgAl were more selective for CO and H2.

Original languageEnglish
Pages (from-to)916-924
Number of pages9
JournalJournal of Saudi Chemical Society
Volume23
Issue number7
DOIs
Publication statusPublished - Nov 2019

Keywords

  • Hydrogen production
  • Molybdenum hydrotalcite
  • Steam reforming
  • Toluene

ASJC Scopus subject areas

  • Chemistry(all)

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