Dry reforming of methane using Ni–Ce catalysts supported on a modified mineral clay

Daza, Carlos Enrique; Kiennemann, A.; Moreno, Sonia; Molina, Rafael

doi:10.1016/j.apcata.2009.05.029

Cited by 111 publications

(60 citation statements)

References 43 publications

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“…Moreover, deactivation is substantially accelerated as a consequence of carbon deposition, since carbon-forming reactions are thermodynamically favoured in the same temperature window and proceed more easily on large nickel crystallites [21]. Several approaches have been therefore proposed in order to increase the stability of Ni-based catalysts [22] [37]); zeolites (zeolite Y, zeolite A, zeolite X, ZSM-5) [38]; clays (clinoptolite [39], diatomite [40], vermiculite [41], montmorlonite [42]); and carbon-based materials (carbon nanotubes, activated carbon) [43].…”

Section: Introductionmentioning

confidence: 99%

A Short Review on the Catalytic Activity of Hydrotalcite-Derived Materials for Dry Reforming of Methane

et al. 2017

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Nickel-containing hydrotalcite-derived materials have been recently proposed as promising materials for methane dry reforming (DRM). Based on a literature review and on the experience of the authors, this review focuses on presenting past and recent achievements on increasing activity and stability of hydrotalcite-based materials for DRM. The use of different NiMgAl and NiAl hydrotalcite (HT) precursors, various methods for nickel introduction into HT structure, calcination conditions and promoters are discussed. HT-derived materials containing nickel generally exhibit high activity in DRM; however, the problem of preventing catalyst deactivation by coking, especially below 700 • C, is still an open question. The proposed solutions in the literature include: catalyst regeneration either in oxygen atmosphere or via hydrogasification; or application of various promoters, such as Zr, Ce or La, which was proven to enhance catalytic stability.

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Section: Introductionmentioning

confidence: 99%

A Short Review on the Catalytic Activity of Hydrotalcite-Derived Materials for Dry Reforming of Methane

et al. 2017

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“…We have reported the use of a delaminated natural smectite using PVA and microwaves as Ni and Ce support for the production of syngas through the dry reforming of methane [24,25]. Catalysts with several Ce compositions and calcined at 500 and 800°C were tested in catalytic experiments at 30 L g -1 h -1 varying the temperature and using diluent gas.…”

Section: Introductionmentioning

confidence: 99%

High-Stable Mesoporous Ni-Ce/Clay Catalysts for Syngas Production

et al. 2011

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A mesoporous-type catalytic support was synthesized through the modification of a smectite with polyvinyl alcohol (PVA) and microwaves. Texture and micro-morphology of the support was determined. Several techniques were employed in order to describe the chemical environment of active species on the surface. Ni 0 particle sizes were dependent on the structural site of reducible species. High stable Ni-Ce catalysts (calcined at 800°C) were evaluated in the CO 2 reforming of methane reaction at 700°C (WHSV = 96 L g -1 h -1 , without dilution gas and pre-reduction). The catalysts have presented CH 4 conversions between 40 and 65%, CO 2 conversion between 35 and 65% and H 2 /CO ratios between 0.2 and 0.4.

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“…Besides the temperature setting, some novel means as well as techniques were applied in the thermal or reduction processes, such as combustion [59,60], microwave radiation [61,62], supercritical [63] and plasma treatment [64][65][66]. Compared with the conventional thermal treatment processes, applying microwave radiation affords some benefits of smaller Ni particle sizes, shorter operating times, and decreased effect of the surface properties on the Ni particle size [62].…”

Section: Effect Of Thermal and Reduction Treatmentmentioning

confidence: 99%

Development of Ni-Based Catalysts Derived from Hydrotalcite-Like Compounds Precursors for Synthesis Gas Production via Methane or Ethanol Reforming

Cheng

et al. 2017

Catalysts

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As a favorably clean fuel, syngas (synthesis gas) production has been the focus of concern in past decades. Substantial literatures reported the syngas production by various catalytic reforming reactions particularly in methane or ethanol reforming. Among the developed catalysts in these reforming processes, Ni-based catalysts from hydrotalcite-like compounds (HTLcs) precursors have drawn considerable attention for their preferable structural traits. This review covers the recent literature reporting syngas production with Ni-based catalysts from HTLc precursors via methane or ethanol reforming. The discussion was initiated with catalyst preparation (including conventional and novel means), followed by subsequent thermal treatment processes, then composition design and the addition of promoters in these catalysts. As Ni-based catalysts have thermodynamic potential to deactivate because of carbon deposition or metal sintering, measures for dealing with these problems were finally summarized. To obtain optimal catalytic performances and resultantly better syngas production, based on analyzing the achievements of the references, some perspectives were finally proposed.

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Dry reforming of methane using Ni–Ce catalysts supported on a modified mineral clay

Cited by 111 publications

References 43 publications

A Short Review on the Catalytic Activity of Hydrotalcite-Derived Materials for Dry Reforming of Methane

A Short Review on the Catalytic Activity of Hydrotalcite-Derived Materials for Dry Reforming of Methane

High-Stable Mesoporous Ni-Ce/Clay Catalysts for Syngas Production

Development of Ni-Based Catalysts Derived from Hydrotalcite-Like Compounds Precursors for Synthesis Gas Production via Methane or Ethanol Reforming

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