METHANE DRY REFORMING OVER Ni SUPPORTED ON PINE SAWDUST ACTIVATED CARBON: EFFECTS OF SUPPORT SURFACE PROPERTIES AND METAL LOADING

Garcı́a, R.; Soto, Gustavo; Escalona, N.; Sepúlveda, Catherine; Orellana, María José; Morales, Natalia Cabrera; Radović, Ljubiša R.; Buitrago‐Sierra, Robison; Rodriguez-Reinoso, F.; Sepúlveda-Escribano, A.

doi:10.5935/0100-4042.20150058

Cited by 4 publications

(2 citation statements)

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“…Activated carbon has also received attention as a catalytic support due to its neutral surface properties and excellent textural properties, with some authors using activated carbon derived from biomass as a catalytic support. [142,143] Oxides with a perovskite-like structure have been evaluated as catalysts for DRM. [144][145][146][147] Thus, Valderrama et al [148][149][150] synthesized catalysts with a structure based on the perovskites La1-XSrXNi0.4Co0.6O3 and La0.8Sr0.2Ni1-YCoYO3 using a sol-gel method, and Lima et al [151] analyzed the effects of Ce on the catalytic properties of La1-XCeXNiO3.…”

Section: Catalytic Supportsmentioning

confidence: 99%

Recent progress in the application of Ni-based catalysts for the dry reforming of methane

2021

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Ni-based catalysts are highly efficient in methane-reforming processes. In the particular case of methane reforming in the presence of carbon dioxide, or dry reforming of methane (DRM), it is necessary to modify and control the initial properties of the catalyst to confer on it resistance to carbon deposition in particular, and to sintering of the Ni metal particles. In this regard, catalytic supports and promoters of different natures have been proposed. Likewise, the addition of small amounts of noble metals to avoid oxidation of the Ni active phase during the reforming reaction has been proposed. Catalyst preparation methods have also been identified as being of particular interest, since they can affect the structure of the Ni metal particles. In this review, the thermodynamic and kinetic aspects of the dry reforming of methane reaction are presented first. The most recent developments in synthetic methods (impregnation, sol-gel, co-precipitation, equilibrium deposition filtration, atomic layer deposition, non-thermal glow discharge plasma, multi-bubble sonoluminescence, "core-shell" structure) aimed at maximizing the dispersion and thermal resistance of Ni particles are then discussed and compared. The catalytic supports used to promote dispersion of the active metallic phase, the oxygen-storage capacity, and the metal/support interaction are also described. The review then addresses the fact that both the nature of the support and the addition of promoters and other metallic phases that modify the surface properties can control the interaction between the metal and the support, the electronic density of the active phase, and the degree of Ni reduction. Finally, new lines of research focused on the DRM process to make the reaction conditions milder and favor the process at low temperatures are also summarized.

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Section: Catalytic Supportsmentioning

confidence: 99%

Recent progress in the application of Ni-based catalysts for the dry reforming of methane

2021

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“…Precious metals of the platinum group are widely used as active species in catalysis, however, due to their limited availability and high price, their substitution by earth‐abundant base metals like Fe, Ni, Co or Cu or by base/noble metal composites, e.g., Pt/Ni, has gained scientific interest in recent years 1–4. While preparation of noble metal catalysts supported on porous carbon such as Pt/C, Ru/C or Pd/C is well‐described in literature, reports on synthesis procedures for base metals like Fe, Ni or Co are relatively rare.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Nickel Ions on Oxygen‐Functionalized Carbons

et al. 2016

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The adsorption of nickel(II) ions on pristine and wet‐chemically oxidized microporous carbons is studied. The nature and acidity of the resulting oxygen functional groups are characterized by temperature‐programmed desorption and point of zero charge measurements. The maximal nickel ion adsorption capacity of the resulting high‐affinity Langmuir‐type adsorption equilibrium is strongly influenced by the oxidative pretreatment. At maximum, loadings of 7.5 wt % could be obtained for carbons showing oxygen content of 12.5 mmol g−1. A linear correlation of the ion uptake with the surface oxygen content could be deduced. In a kinetic study, it could be proved that the uptake of nickel at room temperature is a slow process and that the time for adsorption is independent of oxygen content, carbon type, and nickel loading.

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