TY - JOUR
T1 - Steam reforming of toluene as model of tar compound over Mo catalysts derived from hydrotalcites
AU - Mitran, Gheorghiţa
AU - Mieritz, Daniel G.
AU - Seo, Dong Kyun
N1 - Publisher Copyright:
© 2019 King Saud University
PY - 2019/11
Y1 - 2019/11
N2 - 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.
AB - 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.
KW - Hydrogen production
KW - Molybdenum hydrotalcite
KW - Steam reforming
KW - Toluene
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U2 - 10.1016/j.jscs.2018.07.006
DO - 10.1016/j.jscs.2018.07.006
M3 - Article
AN - SCOPUS:85064392155
SN - 1319-6103
VL - 23
SP - 916
EP - 924
JO - Journal of Saudi Chemical Society
JF - Journal of Saudi Chemical Society
IS - 7
ER -