The Effects of Textural Properties and Surface Chemistry of Activated Carbon on Its Catalytic Performance in Methane Decomposition for Hydrogen Production

Bai, Zongqing; Li, W.; Bai, Jin; Li, B.; Chen, H.

doi:10.1080/15567031003663174

Cited by 18 publications

(6 citation statements)

References 16 publications

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“…All acidtreated ACs depicted a higher initial CH 4 conversion as compared to untreated AC. 136 Wang et al reported that pretreating ACs with HCl and HF resulted in increased surface area, which is in good agreement with the findings of Bai et al; however, excessive removal of the mineral content from the catalysts led to the collapse of the surface area and pore volume. 137 3.1.8.…”

Section: Particle Sizesupporting

confidence: 82%

Thermocatalytic Decomposition of Methane: A Review on Carbon-Based Catalysts

Hamdani,

Ahmad,

Chulliyil

et al. 2023

ACS Omega

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The global initiatives on sustainable and green energy resources as well as large methane reserves have encouraged more research to convert methane to hydrogen. Catalytic decomposition of methane (CDM) is one optimistic route to generate clean hydrogen and value-added carbon without the emission of harmful greenhouse gases, typically known as blue hydrogen. This Review begins with an attempt to understand fundamentals of a CDM process in terms of thermodynamics and the prerequisite characteristics of the catalyst materials. In-depth understanding of rate-determining steps of the heterogeneous catalytic reaction taking place over the catalyst surfaces is crucial for the development of novel catalysts and process conditions for a successful CDM process. The design of state-of-the-art catalysts through both computational and experimental optimizations is the need of hour, as it largely governs the economy of the process. Recent mono- and bimetallic supported and unsupported materials used in CDM process have been highlighted and classified based on their performances under specific reaction conditions, with an understanding of their advantages and limitations. Metal oxides and zeolites have shown interesting performance as support materials for Fe- and Ni-based catalysts, especially in the presence of promoters, by developing strong metal–support interactions or by enhancing the carbon diffusion rates. Carbonaceous catalysts exhibit lower conversions without metal active species and largely result in the formation of amorphous carbon. However, the stability of carbon catalysts is better than that of metal oxides at higher temperatures, and the overall performance depends on the operating conditions, catalyst properties, and reactor configurations. Although efforts to summarize the state-of-art have been reported in literature, they lack systematic analysis on the development of stable and commercially appealing CDM technology. In this work, carbon catalysts are seen as promising futuristic pathways for sustained H2 production and high yields of value-added carbon nanomaterials. The influence of the carbon source, particle size, surface area, and active sites on the activity of carbon materials as catalysts and support templates has been demonstrated. Additionally, the catalyst deactivation process has been discussed, and different regeneration techniques have been evaluated. Recent studies on theoretical models towards better performance have been summarized, and future prospects for novel CDM catalyst development have been recommended.

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Section: Particle Sizesupporting

confidence: 82%

Thermocatalytic Decomposition of Methane: A Review on Carbon-Based Catalysts

Hamdani,

Ahmad,

Chulliyil

et al. 2023

ACS Omega

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“…keeping the reaction running even after the initially exposed surface becomes completely covered [261].…”

Section: Carbon Materialsmentioning

confidence: 99%

Catalytic methane decomposition to boost the energy transition: Scientific and technological advancements

Alves

Pereira

Lagarteira

et al. 2021

Renewable and Sustainable Energy Reviews

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“…Although Lazaro et al found initial activity to depend upon surface oxygen groups [37], the consensus is that activity does not depend nor correlate to oxygen content, consistent with the fact that these groups are rapidly removed during the reaction. Several groups have investigated the correlation between surface area and activity/rate; no correspondence has been found [21,38,39]. In comparing the catalytic activity of virgin AC (lignite) with that pre-treated with pure hydrogen at The changing structure of the deposited carbon was best illustrated by Lazaro et al, who reported XRD profiles of the catalyst with deposit as the run progressed, shown in Figure 3 [37].…”

Section: Depositionmentioning

confidence: 99%

Carbons as Catalysts in Thermo-Catalytic Hydrocarbon Decomposition: A Review

Wal

Nkiawete

2020

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Thermo-catalytic decomposition is well-suited for the generation of hydrogen from natural gas. In a decarbonization process for fossil fuel—pre-combustion—solid carbon is produced, with potential commercial uses including energy storage. Metal catalysts have the disadvantages of coking and deactivation, whereas carbon materials as catalysts offer resistance to deactivation and poisoning. Many forms of carbon have been tested with varied characterization techniques providing insights into the catalyzed carbon deposition. The breadth of studies testing carbon materials motivated this review. Thermocatalytic decomposition (TCD) rates and active duration vary widely across carbons tested. Regeneration remains rarely investigated but does appear necessary in a cyclic TCD–partial oxidation sequence. Presently, studies making fundamental connections between active sites and deposit nanostructures are few.

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The Effects of Textural Properties and Surface Chemistry of Activated Carbon on Its Catalytic Performance in Methane Decomposition for Hydrogen Production

Cited by 18 publications

References 16 publications

Thermocatalytic Decomposition of Methane: A Review on Carbon-Based Catalysts

Thermocatalytic Decomposition of Methane: A Review on Carbon-Based Catalysts

Catalytic methane decomposition to boost the energy transition: Scientific and technological advancements

Carbons as Catalysts in Thermo-Catalytic Hydrocarbon Decomposition: A Review

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