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• W1986954658 abstract "Fe-based catalysts doped with Mo were prepared and tested in the catalytic decomposition of methane (CDM), which aims for the co-production of CO 2 -free hydrogen and carbon filaments (CFs). Catalysts performance were tested in a thermobalance operating either at isothermal or temperature programmed mode by monitoring the weight changes with time or temperature, respectively, as a result of CF growth on the metal particles. Maximum performance of Fe–Mo catalysts was found at the temperature range of 700–900 °C. The addition of Mo as dopant resulted in an increase in the rate and amount of deposited carbon, reaching an optimum in the range 1.7–5.1% (mol) of Mo for Fe–Mo/Al 2 O 3 catalysts, whereas for Fe–Mo/MgO catalyst an optimum at 5.1% Mo loading was obtained. XRD study revealed the effect of the Mo addition on the Fe 2 O 3 /Fe crystal domain size in the fresh and reduced catalysts. Tubular carbon nanostructures with high structural order were obtained using Fe–Mo catalysts, mainly as multiwall carbon nanotubes (MWCNTs) and bamboo carbon nanotubes. Fe–Mo catalysts showing best results in thermobalance were tested in a rotary bed reactor leading to high conversions of methane (70%) and formation of MWCNTs (5.3 g/h). • Hydrogen and MWCNTs production by catalytic decomposition is studied with Fe–Mo catalysts. • Ramp mode thermobalance is a reliable tool for rapid catalyst screening in CDM reaction. • Mo addition favored the formation of smaller Fe 2 O 3 particles resulting in enhanced carbon formation. • Fe–Mo catalysts produced MWCNTs and bamboo nanotubes with graphitic structural properties. • A rotary bed reactor was successfully tested to scale up the process." @default.
• W1986954658 created "2016-06-24" @default.
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• W1986954658 date "2014-03-01" @default.
• W1986954658 modified "2023-10-16" @default.
• W1986954658 title "Hydrogen and multiwall carbon nanotubes production by catalytic decomposition of methane: Thermogravimetric analysis and scaling-up of Fe–Mo catalysts" @default.
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• W1986954658 doi "https://doi.org/10.1016/j.ijhydene.2013.12.127" @default.
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