Iron catalyst for decomposition of methane: influence of Al/Si ratio support
20% iron catalysts supported on combined alumina and silica through different proportions (Al2O3:SiO2:
100:0.00, 90.0:10.0, 80.0:20.0 and 0.0:100.0) were tested for the catalytic decomposition of methane to
produce H2 and carbon. The catalysts were prepared via impregnation technique. The physicochemical
properties of the catalysts were characterized with TGA, XRD, H2-TPR, and TEM techniques. The results
specified no reaction for all temperatures when the catalysts were supported with bare silica. Indeed, the
20%Fe/(Si-80)-800 catalyst with 20% silica support operated at 800 C produced CH4 conversion profile
that rapidly descended from 64% to 5% due to the high content of silica. Plain alumina supported catalyst
demonstrated the best conversion and stability operated at 800 C. The CH4 conversion started from
83.4% and lasts at 82.2% after 300 min on stream.
20% iron catalysts supported on combined alumina and silica through different proportions (Al2O3:SiO2:
100:0.00, 90.0:10.0, 80.0:20.0 and 0.0:100.0) were tested for the catalytic…
A novel approach to the in situ regeneration of a spent alumina-supported cobalt–iron
catalyst for catalytic methane decomposition is reported in this work. The spent catalyst was
…