H2-production from CO2-assisted ethanol steam reforming: The regeneration of Ni-based catalysts

Bednarczuk, Lukasz; Piscina, Pilar Ramı́rez de la; Homs, Narcı́s

doi:10.1016/j.ijhydene.2015.01.061

Cited by 32 publications

(11 citation statements)

References 24 publications

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“…4). Bednarczuk et al [97,98] reported that the coke deposited on deactivated ethanol steam reforming Ni catalysts (with Al2O3, MgO, Y2O3, La2O3 and ZrO2 supports) might be partly removed by CO2 gasification, accompanied by a partial recovery of catalyst activity.…”

Section: Co2 Gasificationmentioning

confidence: 99%

Regeneration of catalysts deactivated by coke deposition: A review

Zhou

Zhao

Zhang

et al. 2020

Chinese Journal of Catalysis

165

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Section: Co2 Gasificationmentioning

confidence: 99%

Regeneration of catalysts deactivated by coke deposition: A review

Zhou

Zhao

Zhang

et al. 2020

Chinese Journal of Catalysis

165

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“…Additionally, the lanthanum species enhanced the adsorption of CO 2 as the CO 2 -TPD results shown, which could clean the surface carbon through Eqs. (4) and (5) [49,96] to regenerate the nickel surface, resulting in the less coke and the improved stability under reforming reaction conditions. La 2 O 3 + CO 2 = La 2 O 2 CO 3 (4) Fig.…”

Section: Deactivation Analysismentioning

confidence: 99%

Efficient hydrogen production from ethanol steam reforming over La-modified ordered mesoporous Ni-based catalysts

Zeng

Tian

et al. 2016

Applied Catalysis B: Environmental

225

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“…However, coke deposits can be eliminated not only by O 2 but also by different gasifying agents, such as steam and CO 2 [27]. There are only few studies that investigated the effect of other gasifying agents such as CO 2 on the regeneration of catalysts [28] and the mechanism of carbon removal by these gases is not yet well known [26].…”

Section: Introductionmentioning

confidence: 99%

Regeneration study of Ni/hydroxyapatite spent catalyst from dry reforming

et al. 2018

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In the present work, the regeneration of a spent nickel hydroxyapatite-based catalyst (Ni/Ca-HA1_S) used in dry reforming of methane (DRM) was investigated. Three successive cycles of DRM/regeneration were performed. Two different gasifying agents were tested for the regeneration step: air and carbon dioxide (21%CO 2 /N 2). The aim was to evaluate the ability of regeneration of the catalyst under different atmospheres. The regeneration was performed in situ at 700°C under 70 mL/min of gasifying agent. Reproducible results were obtained between each cycle for the two atmospheres tested and only a small irreversible deactivation was noticed. Several characterizations (SEM, TEM, TPR, XRD) of the fresh and spent catalysts allowed proving that the irreversible deactivation was provoked by densification of nickel particles and core-shell carbon formation. Despite the slight decrease in reactants' conversions, selectivity to syngas was around 80-90% during the three cycles of DRM/ regeneration with both atmospheres and no changes in the selectivity were observed. The results proved that the Ni/Ca-HA1_S catalyst could be easily regenerated under different atmospheres and make it competitive for dry reforming of methane.

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H2-production from CO2-assisted ethanol steam reforming: The regeneration of Ni-based catalysts

Cited by 32 publications

References 24 publications

Regeneration of catalysts deactivated by coke deposition: A review

Regeneration of catalysts deactivated by coke deposition: A review

Efficient hydrogen production from ethanol steam reforming over La-modified ordered mesoporous Ni-based catalysts

Regeneration study of Ni/hydroxyapatite spent catalyst from dry reforming

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