Investigation into the mechanism of NiMg(Ca)bAlcOx catalytic activity for production of solarised syngas from carbon dioxide reforming of methane

Sun, Yanping; Collins, Mike; French, David; McEvoy, Stephen R.; Hart, Glenn; Stein, W.

doi:10.1016/j.fuel.2012.08.057

Cited by 8 publications

(2 citation statements)

References 28 publications

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“…The specific surface area is calculated by the BET method in the relative pressure range of 0.05-0.30 of the adsorption branch, and the pore volume is calculated from the adsorption isotherm at relative pressure of 0.99; both the results are shown in Table 1. The BET surface increased with the decrease in Mg/Al ratio, indicating that Al plays a vital role in maintaining a large surface area; the same phenomenon was also observed by Sun et al [41]. The pore size distributions become broad then narrow again with the increasing Mg/Al ratio, which implied a slight change in catalysts' structure with the variation in Mg/Al ratios.…”

Section: Characterization Of Fresh Catalystssupporting

confidence: 79%

Revealing the Effect of Nickel Particle Size on Carbon Formation Type in the Methane Decomposition Reaction

et al. 2020

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Carbon species deposition is recognized as the primary cause of catalyst deactivation for hydrocarbon cracking and reforming reactions. Exploring the formation mechanism and influencing factors for carbon deposits is crucial for the design of rational catalysts. In this work, a series of NixMgyAl-800 catalysts with nickel particles of varying mean sizes between 13.2 and 25.4 nm were obtained by co-precipitation method. These catalysts showed different deactivation behaviors in the catalytic decomposition of methane (CDM) reaction and the deactivation rate of catalysts increased with the decrease in nickel particle size. Employing TG-MS and TEM characterizations, we found that carbon nanotubes which could keep catalyst activity were more prone to form on large nickel particles, while encapsulated carbon species that led to deactivation were inclined to deposit on small particles. Supported by DFT calculations, we proposed the insufficient supply of carbon atoms and rapid nucleation of carbon precursors caused by the lesser terrace/step ratio on smaller nickel particles, compared with large particles, inhibit the formation of carbon nanotube, leading to the formation of encapsulated carbon species. The findings in this work may provide guidance for the rational design of nickel-based catalysts for CDM and other methane conversion reactions.

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Section: Characterization Of Fresh Catalystssupporting

confidence: 79%

Revealing the Effect of Nickel Particle Size on Carbon Formation Type in the Methane Decomposition Reaction

et al. 2020

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“…NiMg 3 AlO x was selected as a CDRM catalyst in this work, because the catalyst formulation showed the highest performance among a series of NiMg b Al c O x catalysts in our previous work [24]. NiMg 3 AlO x powder was prepared by the co-precipitation method reported [22].…”

Section: Ni-containing Foam Catalystsmentioning

confidence: 99%

Development of Cu foam-based Ni catalyst for solar thermal reforming of methane with carbon dioxide

Sun

Xie

et al. 2015

Journal of Energy Chemistry

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Syngas Production Using Carbon Dioxide Reforming: Fundamentals and Perspectives

Ross

2014

Green Chemistry and Sustainable Technology

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Investigation into the mechanism of NiMg(Ca)bAlcOx catalytic activity for production of solarised syngas from carbon dioxide reforming of methane

Cited by 8 publications

References 28 publications

Revealing the Effect of Nickel Particle Size on Carbon Formation Type in the Methane Decomposition Reaction

Revealing the Effect of Nickel Particle Size on Carbon Formation Type in the Methane Decomposition Reaction

Development of Cu foam-based Ni catalyst for solar thermal reforming of methane with carbon dioxide

Syngas Production Using Carbon Dioxide Reforming: Fundamentals and Perspectives

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