Methane dry reforming reaction on Ru(0 0 1) surfaces

Egawa, Chikashi

doi:10.1016/j.jcat.2017.11.010

Cited by 55 publications

(25 citation statements)

References 48 publications

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“…Numerous papers in the literature have reported the observation of water as a byproduct of the DRM reaction. 38,39 In this work, a marginal amount of water production was observed ( Fig. S1 †), confirming the occurrence of the RWGS reaction (eqn (4)).…”

Section: Catalytic Activitysupporting

confidence: 80%

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation

Nguyen

Pham

Ran

et al. 2018

Catal. Sci. Technol.

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Section: Catalytic Activitysupporting

confidence: 80%

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation

Nguyen

Pham

Ran

et al. 2018

Catal. Sci. Technol.

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“…Regarding the promoted samples, it is observed that promoted catalysts with 0.5% of promoter (0.5ReNi and 0.5RuNi) present the lowest deactivation degree. Re and Ru have been described as active sites for CO 2 activation ( Richardson et al, 2001 ; Solymosi et al, 2005 ; Egawa, 2018 ). Indeed, they are electron-rich species, which can donate electrons to the CO 2 antibonding orbitals, thus weakening the C–O bond and facilitating the reaction.…”

Section: Resultsmentioning

confidence: 99%

Bimetallic Ni–Ru and Ni–Re Catalysts for Dry Reforming of Methane: Understanding the Synergies of the Selected Promoters

et al. 2021

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Designing an economically viable catalyst that maintains high catalytic activity and stability is the key to unlock dry reforming of methane (DRM) as a primary strategy for biogas valorization. Ni/Al2O3 catalysts have been widely used for this purpose; however, several modifications have been reported in the last years in order to prevent coke deposition and deactivation of the samples. Modification of the acidity of the support and the addition of noble metal promoters are between the most reported strategies. Nevertheless, in the task of designing an active and stable catalyst for DRM, the selection of an appropriate noble metal promoter is turning more challenging owing to the lack of homogeneity of the different studies. Therefore, this research aims to compare Ru (0.50 and 2.0%) and Re (0.50 and 2.0%) as noble metal promoters for a Ni/MgAl2O4 catalyst under the same synthesis and reaction conditions. Catalysts were characterized by XRF, BET, XRD, TPR, hydrogen chemisorption (H2-TPD), and dry reforming reaction tests. Results show that both promoters increase Ni reducibility and dispersion. However, Ru seems a better promoter for DRM since 0.50% of Ru increases the catalytic activity in 10% and leads to less coke deposition.

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“…[36] The electron-impact dissociation initiates the activation of CH 4 and CO 2 and the formation of active species such as CH 3 , CH 2 , and CH species and CO and O, respectively [Equation (2), (3), (4), and (5)]. Furthermore, the recombination of species leads to the formation of higher hydrocarbons [Equation (6), (7), (8), and (9)]. [37] As per the specifications.…”

Section: Conversion Of Reactants In the Dbd Reactormentioning

confidence: 99%

“…DRM has an advantage over steam reforming of methane in terms of the optimum H 2 /CO ratio, suitable for the production of liquid fuels. Catalytic DRM was performed using various supported metal catalysts (Ru, Rh, Pd, and Pt) and transition (Ni, Co, and Fe) metals, and among them, Ni‐based catalysts showed good activity and economic viability . Despite the advantages, the severe coke formation deactivates the catalyst and hence results in a poor energy yield.…”

Section: Introductionmentioning

confidence: 99%

Dry Reforming of Methane in DBD Plasma over Ni‐Based Catalysts: Influence of Process Conditions and Support on Performance and Durability

et al. 2019

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The conversion of greenhouse gases, H2 and CO selectivity, H2/CO ratio, and carbon formation in the dry reforming reaction over Ni‐supported ZSM‐5, Al2O3, and TiO2 are tested under thermal, plasma, and plasma–thermal conditions. It is observed that the dielectric nature, specific surface area, and acid‐base properties of the support influence the performance during the DRM reaction. Typical results indicate that the best activity and syngas yield are achieved with 15Ni/Al2O3 under plasma conditions, possibly due to the high dielectric constant and surface area of Al2O3 and nanosize of Ni. In the thermal condition, the highest conversion of 73% and 68% for CH4 and CO2, respectively, is achieved over 15Ni/ZSM‐5 at 500 °C. Plasma‐assisted thermal conditions provide the highest conversion due to the activation of reactants and their partial conversion in the plasma zone before entering into the catalytic zone. The plasma‐assisted thermocatalytic conversions of CH4 and CO2 reach the best values of 76% and 71%, respectively, on 15Ni/ZSM‐5. Under the same conditions, 68% and 65% conversion of CH4 and CO2, respectively, is achieved with 15Ni/Al2O3 where the selectivity for H2 and CO is 45% and 58%, respectively.

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Methane dry reforming reaction on Ru(0 0 1) surfaces

Cited by 55 publications

References 48 publications

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation

Bimetallic Ni–Ru and Ni–Re Catalysts for Dry Reforming of Methane: Understanding the Synergies of the Selected Promoters

Dry Reforming of Methane in DBD Plasma over Ni‐Based Catalysts: Influence of Process Conditions and Support on Performance and Durability

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Methane dry reforming reaction on Ru(0 0 1) surfaces

Cited by 55 publications

References 48 publications

Dry reforming of methane over Co–Mo/Al2O3 catalyst under low microwave power irradiation

Dry reforming of methane over Co–Mo/Al2O3 catalyst under low microwave power irradiation

Bimetallic Ni–Ru and Ni–Re Catalysts for Dry Reforming of Methane: Understanding the Synergies of the Selected Promoters

Dry Reforming of Methane in DBD Plasma over Ni‐Based Catalysts: Influence of Process Conditions and Support on Performance and Durability

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Methane dry reforming reaction on Ru(0 0 1) surfaces

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation