Tuning the properties of nickel nanoparticles inside SBA-15 mesopores for enhanced stability in methane reforming

Karam, Leila; Casale, Sandra; Zakhem, Henri El; Hassan, Nissrine El

doi:10.1016/j.jcou.2016.12.002

Cited by 39 publications

(25 citation statements)

References 45 publications

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“…Stability measurements were performed at 650 °C, and kept at atmospheric pressure and at a gas hourly space velocity (GHSV) of 72 L.g −1 .h −1 . This protocol was chosen based on TPR data and on previous studies . Catalytic performances were established from the gas composition at the exit of the reactor monitored with an INFICON micro GC along with a TCD and two parallel channels (Molecular sieve and Plot U).…”

Section: Methodsmentioning

confidence: 99%

“…Recently, we showed that an efficient route to limit nickel sintering consists in using supports with high specific area and organized mesopores where the nickel nanoparticles can be occluded, leading not only to their stabilization against growing but also to their protection against carbon nanotube formation that is inhibited owing to steric constraints. [19][20][21][22] Enhancing the interaction between the nickel active phase and the support was also found to play a determining role, especially when using ordered mesoporous alumina with high specific surface as support. [23,24] Furthermore, increased interaction and performances were reached on this type of support by preparing the catalysts via a one-pot method consisting in introducing the nickel active phase directly during the synthesis of the alumina matrix instead of adding it by conventional post-synthesis impregnation treatment.…”

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Porous Nickel‐Alumina Derived from Metal‐Organic Framework (MIL‐53): A New Approach to Achieve Active and Stable Catalysts in Methane Dry Reforming

et al. 2019

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An Al‐containing MIL‐53 metal‐organic framework with very high surface area (SBET=1130 m2.g−1, N2 sorption) was used as sacrificial template to prepare a nickel‐alumina‐based catalyst (Ni0AlMIL) highly active and stable in the reaction of dry reforming of methane (DRM). The procedure consisted in impregnating the activated (solvent free) MIL‐53 sample with a nickel precursor solution, then calcining the material to remove the organic linkers and subsequently reducing it to form the reduced nickel active phase. At the step of calcination, this procedure results in the formation of a porous uniform spinel phase with Ni nanospecies embedded in the alumina‐based matrix, as deduced from XRD, TPR and TEM analyses. This leads after reduction to a porous lamellar γ‐Al2O3 material with small Ni0 nanoparticles homogeneously dispersed and stabilized within the support. The performances of this catalyst in DRM are better than those of two reference Ni/alumina catalysts prepared for comparison by conventional nickel impregnation of two preformed alumina supports: a first one obtained by calcination of MIL‐53 (AlMIL) and a second one consisting of a commercial γ‐Al2O3 batch (AlCOM). Under steady state conditions at a temperature of 650 °C and a pressure of 1 bar, the higher CH4 and CO2 conversions (till 3 times higher than on Ni0/AlCOM), high catalytic stability (no loss of activity after 13–100 h) and higher selectivity towards DRM (H2:CO products ratio remaining at 1) on Ni0AlMIL compared to the other catalysts is believed to come from the particularly strong interaction between the nickel and alumina phases generated by using the unique high specific surface of the parent MOF support to deposit nickel. This creates an intimate mixing favorable to a persisting interaction of the nickel nanoparticles with the alumina support in the reduced material. The lamellar shape of the γ‐Al2O3 composing the catalyst and its remaining high specific surface may also contribute to the excellent Ni resistance to sintering and in turn to the inhibition of carbon nanotubes formation during the reaction.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Porous Nickel‐Alumina Derived from Metal‐Organic Framework (MIL‐53): A New Approach to Achieve Active and Stable Catalysts in Methane Dry Reforming

et al. 2019

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“…Impregnation of nickel (5 wt%) on the three different supports was performed following "two solvents" loading method described elsewhere [19] and the calcination based on the optimized conditions reported in previous work [11]. The resulting samples were labeled as Ni/SBA-16(1), Ni/SBA-16 (2), and Ni/SBA-15.…”

Section: A Catalysts Preparationmentioning

confidence: 99%

“…Recent studies have shown that mesoporous SBA-15 silica support is promising for the confinement and stabilization of nickel in DRM reaction [10,11]. The addition of ceria to Ni/SBA-16 catalysts was studied by Zhang et al [12] and the results showed that NiCe/SBA-16 was more stable, exhibiting higher conversion than Ni/SBA-16 in DRM.…”

Section: Introductionmentioning

confidence: 99%

Effect of pore geometry of mesoporous supports on catalytic performances in methane reforming

et al. 2018

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Abstract-Catalysts prepared using three dimensional SBA-16 silica support (composed of micropores and cage-like mesopores) were tested in the reaction of methane dry reforming, in comparison with 2D hexagonal mesoporous SBA-15 support. The samples were evaluated by N2 sorption and X-Ray diffraction (XRD) for the assessment of their textural and structural properties. The reducibility was characterized by temperature programmed reduction (TPR). The catalytic performances were evaluated in methane dry reforming and spent catalysts (after reaction) were characterized for the evaluation of sintering and coke formation by TPH/MS, XRD and HR-TEM.

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A review on catalyst development for conventional thermal dry reforming of methane at low temperature

Zhou

Mahinpey

2023

Can J Chem Eng

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Carbon dioxide (CO 2 ) utilization and conversion, as one of the main parts of carbon capture, utilization, and storage (CCUS), is not only considered an important way to mitigate global warming but also an attractive industrial route to produce valuable fuels and chemical feedstocks. Catalytic dry reforming of methane (DRM) is a promising technology for carbon dioxide utilization and conversion as it can produce syngas, carbon monoxide (CO), and hydrogen (H 2 ) for widespread industrial production processes. In most studies of the DRM reaction, a relatively high operational temperature (i.e., >700 C) has been applied since the reactivity limitation of widely used Ni-based catalysts at low temperatures and the extremely endothermic property of the DRM reaction. However, high cost and high requirement of thermal stability for catalysts have become a severe problem impeding the further commercialization of DRM technology. Decreasing the operational temperature (i.e., <700 C) is considered a promising way for further application of the DRM route to convert CO 2 and produce syngas. However, traditional Ni-based catalysts suffered from unsatisfied reactivity and severe coke formation, leading to quick deactivation at low temperatures. Developing a catalyst with excellent catalytic activity, coke resistance, and improved thermal stability is necessary for low-temperature DRM reactions. In recent years, with significant development in materials, catalyst design, and computational simulation, some synthesized catalysts have achieved considerable improvement in catalytic performance in low-temperature DRM. Hence, a review of recent development on low-temperature DRM catalysts is provided here to further guide and profoundly understand catalyst design for low-temperature DRM.

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Tuning the properties of nickel nanoparticles inside SBA-15 mesopores for enhanced stability in methane reforming

Cited by 39 publications

References 45 publications

Porous Nickel‐Alumina Derived from Metal‐Organic Framework (MIL‐53): A New Approach to Achieve Active and Stable Catalysts in Methane Dry Reforming

Porous Nickel‐Alumina Derived from Metal‐Organic Framework (MIL‐53): A New Approach to Achieve Active and Stable Catalysts in Methane Dry Reforming

Effect of pore geometry of mesoporous supports on catalytic performances in methane reforming

A review on catalyst development for conventional thermal dry reforming of methane at low temperature

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