Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
210785 | Fuel Processing Technology | 2011 | 9 Pages |
Four catalysts, consisting of Ni, Ni:Cu, Fe or Fe:Mo as the active phase and Al2O3 or MgO as a textural promoter, were tested for the catalytic decomposition of methane in a rotary bed reactor, obtaining both CO2-free hydrogen and carbon nanostructures in a single step. Hydrogen yields of up to 14.4 Ndm3 H2·(h·gcat)− 1 were obtained using the Ni-based catalysts, and methane conversions above 80% were observed with the Fe-based catalysts. In addition to hydrogen production, the Ni-based catalysts allowed the large-scale production of fishbone-like carbon nanofibres, whereas the use of the Fe-based catalysts promoted the production of carbonaceous filaments having a high degree of structural order, consisting of both chain-like carbon nanofibres and carbon nanotubes.
► Simultaneous production of CO2-free hydrogen and carbon nanostructures. ► Rotary bed reactor allowing high methane conversions. ► Large scale production of high added value CNFs and MWCNTs.