Nickel-iron catalyst for decomposition of methane to hydrogen and filamentous carbon: Effect of calcination and reaction temperatures

Optimizing Hydrogen Production: Influence of Promoters in Methane Decomposition on Titania-Modified-Zirconia Supported Fe Catalyst

“…When support was changed to silica–alumina (Si/Al = 20/80), the catalyst became highly active (average H 2 yield of 80% over a 330 min period of reaction), and coke formation was markedly suppressed (up to 26%) . Among the dual active sites, Ni dispersed over iron aluminate and Ni dispersed over ferrate come up with a Ni–Fe alloy having strong metal–support interaction. , FeAl 2 O 4 -supported nickel catalyst exhibited 21% CH 4 conversion at 575 °C during the 300 min time on stream . Nickel ferrite showed about 48.5% CH 4 conversion with 97.70 × 10 –5 mol H 2 g –1 min –1 hydrogen formation rate .…”

“…Among the dual active sites, Ni dispersed over iron aluminate and Ni dispersed over ferrate come up with a Ni–Fe alloy having strong metal–support interaction. , FeAl 2 O 4 -supported nickel catalyst exhibited 21% CH 4 conversion at 575 °C during the 300 min time on stream . Nickel ferrite showed about 48.5% CH 4 conversion with 97.70 × 10 –5 mol H 2 g –1 min –1 hydrogen formation rate . Sun et al prepared a zeolite (high-silica)-supported Ni catalyst, which was further doped with Fe and Zn.…”

“… 13 Nickel ferrite showed about 48.5% CH 4 conversion with 97.70 × 10 –5 mol H 2 g –1 min –1 hydrogen formation rate. 14 Sun et al prepared a zeolite (high-silica)-supported Ni catalyst, which was further doped with Fe and Zn. The Ni–Fe alloy phase stabilized the catalytic active sites, whereas Zn induced markable carbon diffusion to avoid excessive deposition.…”

Scalable Synthesis of Oxygen Vacancy-Rich Unsupported Iron Oxide for Efficient Thermocatalytic Conversion of Methane to Hydrogen and Carbon Nanomaterials

“…To overcome the aforementioned challenges inherent in currently used techniques, thermocatalytic methane decomposition (TCMD) based on metal oxide catalysts can be adopted, as it is cleaner and more cost-effective [8,11,12]. As it requires less energy and its CO/CO 2 emission rate is lower than in MSR, it can be economically scaled up for practical industrial applications, including biomethane exploitation for carbon generation and storage [13,14].…”

“…In current TCMD processes, Ni-, Fe-, and Co-based catalysts are usually employed, along with Al 2 O 3 and MgO or other metal oxides, which serve as supporting materials. Although Ni and Co particles are characterized by high activity in the 500−700 • C temperature range and their use results in a high graphitic carbon growth rate [5,6,12], Ni-and Co-based catalysts have some notable drawbacks, including high cost and toxicity. Moreover, at high temperatures-which are necessary for methane conversion at sufficiently high rates and for producing highly stable graphitic carbon-they undergo rapid deactivation [3].…”