Methane decomposition over Ni supported on palm oil fuel ash (Ni-POFA) catalyst

Hanifa, N. H. E.; Ismail, Mohammad Hafiz; Ideris, Asmida

doi:10.1016/j.cherd.2021.12.035

Cited by 10 publications

(1 citation statement)

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“…Studies have assessed the use of metal catalysts in methane decomposition [11]. Apart from being low cost, the abundance of transition metals, such as Ni, Cu, Fe and Co, has made them the most used catalyst in methane decomposition [12][13][14][15]. Syed-Muhammad et al summarized studies on metallic catalysts, promoters, metal loading, operational conditions and feedstock mixtures in methane decomposition [16].…”

Section: Introductionmentioning

confidence: 99%

Promoting Effects of Copper and Iron on Ni/MSN Catalysts for Methane Decomposition

et al. 2023

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Copper and iron-based bimetallic nickel catalysts supported on Mesostructured Silica Nanoparticles (MSNs) with compositions of 50% Ni–5% Cu/MSN and 50% Ni–5% Fe/MSN were prepared using an impregnation method, and they were compared with a monometallic 50% Ni–MSN catalyst for their activity and stability in methane decomposition reaction. The influence of promoters, such as Cu and Fe, at different reaction temperatures (700 °C, 800 °C and 900 °C) was investigated. The results revealed that the Cu and Fe-promoted catalysts significantly increased the hydrogen yield in methane decomposition compared with the unpromoted catalyst. This could be attributed to the formation of Ni–Cu and Ni–Fe bimetallic alloys in the catalysts, respectively, and this favored the stability of the catalysts. With increasing reaction temperature, the hydrogen yield also increased. However, the hydrogen yield and the lifetime of the nickel catalyst were enhanced upon the addition of iron compared to copper at all the reaction temperatures. The analysis conducted over the spent catalysts validated the formation of multi-walled carbon nanotubes with a bamboo-like internal channel over the catalysts along with a high crystallinity and graphitization degree of the carbon produced.

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