Carbon dioxide reforming of methane over Ni incorporated into Ce–ZrO2 catalysts

Roh, Hyun Seog; Potdar, H.S.; Jun, Kil-Woung; Kim, Jae Woo; Oh, Young Sam

doi:10.1016/j.apcata.2004.08.009

Cited by 165 publications

(68 citation statements)

References 27 publications

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“…Peaks at 400-600 • C are related to bulk oxygen in CZ and NiO having strong interaction with the support, or Ni ions incorporated into CZ [183]. In Figure 5 the qualitative behavior of TPR profiles (the data from our research are not yet published) of nickel catalysts supported on doped ceria with increasing nickel content is reported.…”

Section: Silica-supported Nickelmentioning

confidence: 99%

“…The H2-TPR profiles reported in [180] show peaks in the temperature range from 400 °C to 600 °C for CZ, attributed to a reduction of surface oxygen and bulk oxygen in Ce0.5Zr0.5O2, respectively [42, 181,182], while the peaks around 360 °C are assigned to the reduction of surface oxygen in CZ and of the bulk NiO, having weak interaction with the support. Peaks at 400-600 °C are related to bulk oxygen in CZ and NiO having strong interaction with the support, or Ni ions incorporated into CZ [183]. In Figure 5 the qualitative behavior of TPR profiles (the data from our research are not yet published) of nickel catalysts supported on doped ceria with increasing nickel content is reported.…”

Section: Silica-supported Nickelmentioning

confidence: 99%

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Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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CO 2 methanation is a well-known reaction that is of interest as a capture and storage (CCS) process and as a renewable energy storage system based on a power-to-gas conversion process by substitute or synthetic natural gas (SNG) production. Integrating water electrolysis and CO 2 methanation is a highly effective way to store energy produced by renewables sources. The conversion of electricity into methane takes place via two steps: hydrogen is produced by electrolysis and converted to methane by CO 2 methanation. The effectiveness and efficiency of power-to-gas plants strongly depend on the CO 2 methanation process. For this reason, research on CO 2 methanation has intensified over the last 10 years. The rise of active, selective, and stable catalysts is the core of the CO 2 methanation process. Novel, heterogeneous catalysts have been tested and tuned such that the CO 2 methanation process increases their productivity. The present work aims to give a critical overview of CO 2 methanation catalyst production and research carried out in the last 50 years. The fundamentals of reaction mechanism, catalyst deactivation, and catalyst promoters, as well as a discussion of current and future developments in CO 2 methanation, are also included.

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Section: Silica-supported Nickelmentioning

confidence: 99%

Section: Silica-supported Nickelmentioning

confidence: 99%

Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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“…Co-precipitated Ce-ZrO 2 supported catalyst have been reported to exhibit high oxygen storage capacity of CeO 2 in Ce-ZrO 2 solid solution, strong interaction between Ni and Ce-ZrO 2 , basic property, and high capability for H 2 uptake [105][106][107]. The ability of the catalyst to provide mobile O 2 species from the support to Ni plays an important role in preventing carbon deposition.…”

mentioning

confidence: 99%

Recent Advances in Hydrogen Production Via Autothermal Reforming Process (ATR): A Review of Patents and Research Articles

Nahar¹,

Dupont²

2013

CHENG

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Abstract:This review examines recent patents and research articles in autothermal reforming (ATR) of fossil fuels like gasoline, diesel, JP-8 along with renewable fuels such as methanol, ethanol, glycerol, butanol, bio-oils and biodiesel into H 2 gas. The focus of the research was the recent developments in terms of ATR reformer design, ATR fuel processors, reformer start up, and reforming catalysts to determine the opportunities for R&D in this area. The production of H 2 by ATR of fossil fuels has been widely investigated; several catalytic studies based on various noble and non-precious metals like Rh and Ni are available, restricting new investigations. In contrast, H 2 production from bio feedstock like bio-oils, biodiesel, ethanol, and butanol are very recent and offer considerable room for further investigation..

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“…In the case of Ce0.1Zr0.9O2, Ce0.2Zr0.8O2 and Ce0.3Zr0.7O2, a pure tetragonal phase is observed. Continuously increasing CeO2 content to 40% and 50%, the XRD patterns are broadened and shift gradually to lower values of 2θ, owing to the substitution of Zr 4+ (ionic radius 0.84 Å) with the bigger Ce 4+ ion (0.96 Å) in the lattice which results in the changes in the lattice parameters [38]. Consequently, a cubic phase gradually appears especially at x = 0.5, giving a mixture of tetragonal and cubic phases.…”

Section: Catalyst Characterizationmentioning

confidence: 92%

The Promoting Effect of Ce on the Performance of Au/CexZr1−xO2 for γ-Valerolactone Production from Biomass-Based Levulinic Acid and Formic Acid

et al. 2018

Catalysts

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Abstract:The production of γ-valerolactone (GVL) directly from biomass-based levulinic acid (LA) and formic acid (FA) without extra hydrogen source is attractive but challenging, due to the requirement of a highly active and stable catalyst. In present work, Au/Ce x Zr 1−x O 2 with various Ce/Zr ratios were prepared as the catalyst for GVL production from LA with the equivalent molar FA, and characterized by XRD, Raman-spectra, BET, NH 3 -TPD, TEM and XPS. It was found that the doped Ce in Au/Ce x Zr 1−x O 2 catalyst could improve the reduction of Au 3+ to metallic Au 0 , and also promoted the dispersion of Au 0 , yielding uniform Au 0 nanoparticles with a small average particle size of about 2.4 nm, thus enhancing both the decomposition of FA to CO-free H 2 and the hydrogenation of LA. Meanwhile, a certain amount of doped Ce (x ≤ 0.4) could facilitate the formation of tetragonal phase (the most desired structure on LA conversion to GVL), and increase the amount of weak and medium-strength acidic sites of catalyst, thereby promoting the dehydration reaction of the intermediate derived from LA hydrogenation. Au/Ce 0.4 Zr 0.6 O 2 catalyst exhibited the best catalytic activity, achieving 90.8% of LA conversion and 83.5% of GVL yield (TON = 2047.8), with good recyclability, and the activity showed no obvious change after 5 runs.

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Carbon dioxide reforming of methane over Ni incorporated into Ce–ZrO2 catalysts

Cited by 165 publications

References 27 publications

Supported Catalysts for CO2 Methanation: A Review

Supported Catalysts for CO2 Methanation: A Review

Recent Advances in Hydrogen Production Via Autothermal Reforming Process (ATR): A Review of Patents and Research Articles

The Promoting Effect of Ce on the Performance of Au/CexZr1−xO2 for γ-Valerolactone Production from Biomass-Based Levulinic Acid and Formic Acid

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