Highly stable and coke-resistant Zn-modified Ni-Mg-Al hydrotalcite derived catalyst for dry reforming of methane: Synergistic effect of Ni and Zn

Chatla, Anjaneyulu; Abu-Rub, Fatima; Prakash, Anuj; Ibrahim, Gasim; Elbashir, Nimir O.

doi:10.1016/j.fuel.2021.122042

Cited by 56 publications

(15 citation statements)

References 78 publications

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“…The support materials, promoter species, and preparation methods are the three most important factors affecting the Ni size of the synthesized catalysts. ,,− The support materials mainly influence metal–support interactions and thus tune the Ni size. Strong metal–support interactions (e.g., on Al 2 O 3 , MgO, or MgAl 2 O 4 ) generally lead to tiny Ni nanoparticles. − The promoter species may inhibit the growth of Ni size by changing electronic/geometric properties of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…Strong metal–support interactions (e.g., on Al 2 O 3 , MgO, or MgAl 2 O 4 ) generally lead to tiny Ni nanoparticles. − The promoter species may inhibit the growth of Ni size by changing electronic/geometric properties of the catalyst. A number of promoter species would decrease Ni size, such as Mo, La, Zn, Mn, and Pr. − The preparation methods would govern the evolution of Ni species and thus modulate the Ni size. Several novel preparation methods have been developed to fabricate small Ni nanoparticles, including plasma treatment, cation–anion double hydrolysis, hydrotalcite derivation, combustion synthesis, and evaporation-induced self-assembly. ,,,, …”

Section: Introductionmentioning

confidence: 99%

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In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)₂ Precursors for Efficient CO₂ Reforming of Methane

Guo

Zhang

et al. 2021

Ind. Eng. Chem. Res.

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Metal size is a critical structural parameter for Ni-based catalysts in CO2 reforming of methane. Herein, ultrasmall Ni nanoparticles (3.7 nm) were fabricated from Ni(OH)2 precursors on γ-Al2O3 nanoplates via a simple solution method followed by H2 reduction. The resultant Ni/Al2O3-IS catalyst showed competitive reforming performance. The turnover frequency reached 15.3 s–1 at 700 °C under atmospheric pressure. Methane (CH4) conversion declined marginally from 79.8 to 70.2% after 20 h of reaction. Characterization results reveal that high activity and good stability were endowed by the ultrasmall Ni size and superior coke resistance, respectively. A bifunctional reaction mechanism was identified on the Ni/Al2O3-IS catalyst, wherein the activation of the reactant molecules was facilitated near metal–support interfaces. This work offers a novel strategy to fabricate ultrasmall Ni particles and provides new insights into structure–activity relationships in CO2 reforming of methane.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)₂ Precursors for Efficient CO₂ Reforming of Methane

Guo

Zhang

et al. 2021

Ind. Eng. Chem. Res.

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Section: Design Strategies Synthesis Approaches and Mechanisms Of Ni-...mentioning

confidence: 99%

Design Strategy, Synthesis, and Mechanism of Ni Catalysts for Methane Dry Reforming Reaction: Recent Advances and Future Perspectives

Wang

2022

Energy Fuels

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Methane dry reforming (MDR, CH4 + CO2 → CO + H2) receives great attention because of the contributions to reducing the emission of greenhouse gases and producing valuable syngas. In order to provide a clear sense of the progress of Ni-based catalysts for MDR in recent decades, we summarized the latest related research papers to illustrate new achievements from the aspects of catalyst preparation and molecule activation. First, the reaction patterns and thermodynamics in MDR are briefly introduced. Then, recent advances in design strategy, synthesis approaches, and the MDR mechanism of Ni catalysts are reviewed in detail. Finally, general remarks and perspectives for MDR in the near future are suggested. The challenges of sintering and carbon deposition on the Ni-based catalysts can be alleviated by rational catalyst design and synthesis, and the pathway of MDR can be revealed by mechanism investigation. These strongly support the establishment of a structure–performance relationship for the MDR reaction over the Ni-based catalysts. It is hoped that this paper will give researchers new ideas and guidance for innovation regarding the MDR reaction, especially for designing stable Ni catalysts and studying the MDR mechanism.

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“…The results showed that although the Ni crystal sizes were relatively large, the Ni-ZnO/13X shows the best performance reaching the total CH 4 valorization at 800 • C and CO 2 conversion of almost 55%. In a recent work by Chatla et al [140], the Zn effect on a NiMgAl mixed oxide catalyst for dry reforming reaction was investigated. To do so, hydrotalcite-type precursors with different Zn loadings were obtained by co-precipitation, maintaining a constant 10 wt.% Ni loading in the final catalyst.…”

Section: Metal Oxides As Activity Promotersmentioning

confidence: 99%

Catalytic Upgrading of Clean Biogas to Synthesis Gas

et al. 2022

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Clean biogas, produced by anaerobic digestion of biomasses or organic wastes, is one of the most promising substitutes for natural gas. After its purification, it can be valorized through different reforming processes that convert CH4 and CO2 into synthesis gas (a mixture of CO and H2). However, these processes have many issues related to the harsh conditions of reaction used, the high carbon formation rate and the remarkable endothermicity of the reforming reactions. In this context, the use of the appropriate catalyst is of paramount importance to avoid deactivation, to deal with heat issues and mild reaction conditions and to attain an exploitable syngas composition. The development of a catalyst with high activity and stability can be achieved using different active phases, catalytic supports, promoters, preparation methods and catalyst configurations. In this paper, a review of the recent findings in biogas reforming is presented. The different elements that compose the catalytic system are systematically reviewed with particular attention on the new findings that allow to obtain catalysts with high activity, stability, and resistance towards carbon formation.

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Highly stable and coke-resistant Zn-modified Ni-Mg-Al hydrotalcite derived catalyst for dry reforming of methane: Synergistic effect of Ni and Zn

Cited by 56 publications

References 78 publications

In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)₂ Precursors for Efficient CO₂ Reforming of Methane

In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)₂ Precursors for Efficient CO₂ Reforming of Methane

Design Strategy, Synthesis, and Mechanism of Ni Catalysts for Methane Dry Reforming Reaction: Recent Advances and Future Perspectives

Catalytic Upgrading of Clean Biogas to Synthesis Gas

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Highly stable and coke-resistant Zn-modified Ni-Mg-Al hydrotalcite derived catalyst for dry reforming of methane: Synergistic effect of Ni and Zn

Cited by 56 publications

References 78 publications

In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)2 Precursors for Efficient CO2 Reforming of Methane

In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)2 Precursors for Efficient CO2 Reforming of Methane

Design Strategy, Synthesis, and Mechanism of Ni Catalysts for Methane Dry Reforming Reaction: Recent Advances and Future Perspectives

Catalytic Upgrading of Clean Biogas to Synthesis Gas

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Product

Resources

About

In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)₂ Precursors for Efficient CO₂ Reforming of Methane

In Situ Fabrication of Ultrasmall Ni Nanoparticles from Ni(OH)₂ Precursors for Efficient CO₂ Reforming of Methane