Highly dispersed Ni/Al2O3 catalysts for dry reforming of methane prepared by alkaline-induced adsorption process

Liu, Xupeng; Zhang, Lei; Zheng, Xiangqian; Zhang, Yimin; He, Dedong; Luo, Yongming

doi:10.1016/j.ijhydene.2022.01.217

Cited by 15 publications

(8 citation statements)

References 59 publications

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

confidence: 99%

“…Liu et al designed a Ni/Al 2 O 3 catalyst by alkaline-induced adsorption for MDR (Figure III) . The suspension containing mesoporous Al 2 O 3 and Ni(NO 3 ) 2 was adjusted to pH 10 by NaOH.…”

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

confidence: 99%

“…The alloy nanoparticles displayed more active and stable MDR performance than pure Ni nanoparticles, owing to the 14III). 129 The suspension containing mesoporous Al 2 O 3 and Ni(NO 3 ) 2 was adjusted to 131 The activation is therefore crucial for its efficient conversion. 132 Clearly illustrating the intermediates of methane activation provides supportive information for understanding the reaction pathway of MDR.…”

Section: Design Strategies Synthesis Approachesmentioning

confidence: 99%

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

confidence: 99%

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

confidence: 99%

Section: Design Strategies Synthesis Approachesmentioning

confidence: 99%

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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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“…(2) Nb 5+ was introduced as a dopant in the preparation of Al 2 O 3 support. He and coworkers 25 used the ligand unsaturated Al 3+ center on mesoporous Al 2 O 3 as a defect to induce Ni 2+ anchoring on the surface of Al 2 O 3 under alkaline conditions. Mesoporous Al 2 O 3 undergoes structural reconstruction under alkaline induction, prompting Ni to form a small, uniform dispersion on the surface of Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

“…(2) Nb 5+ was introduced as a dopant in the preparation of Al 2 O 3 support. He and coworkers 25 Compared to the solution-based methods, vapor deposition (VD)-based methods 26 were used far less often for Ni catalysts. As a consequence, the catalytic properties of VD-based Ni catalysts are poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Supported Ni Catalysts: Simple Vapor Deposition Preparation Method and Improved Catalytic Performance for Oxidative Dehydrogenation of Ethane

Lin,

Ren,

Zhuang

et al. 2023

ACS Omega

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Developing new methods of catalyst preparation is one of the most important tasks in the field of catalysis. A simple one-tube vapor deposition (VD) is provided in this paper for preparing the supported Ni catalyst. Ni(acac)2 was used as the Ni precursor. This preparation method was successfully applied to three types of catalytic supports, that is, Al2O3 and zeolites 5A and Hβ. Varying Ni contents of less than 8 wt % can be obtained by employing different conditions. The Ni content, depending on different deposition conditions, was preliminarily explored. The catalytic performance for oxidative dehydrogenation of ethane (ODHE) was tested for the prepared Ni catalysts by the VD method. Several cases of catalytic tests showed that for the same Ni content, the VD-prepared Ni catalyst presented better performance for ODHE than the one prepared by a traditional impregnation method. Besides the improvement in catalytic performance, several advantages of our VD preparation method for catalysis are discussed.

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Unbounding the Future: Designing NiAl‐Based Catalysts for Dry Reforming of Methane

Zhang,

Zhao,

Song

et al. 2024

Chemistry An Asian Journal

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Dry reforming of methane (DRM), the catalytic conversion of CH4 and CO2 into syngas (H2 + CO), is an important process closely correlated to the environment and chemical industry. NiAl‐based catalysts have been reported to exhibit excellent activity, low cost, and environmental friendliness. At the same time, the rapid deactivation caused by carbon deposition, Ni sintering, and phase transformation exerts great challenges for its large‐scale applications. This review summarizes the recent advances in NiAl‐based catalysts for DRM, particularly focusing on the strategies to construct efficient and stable NiAl‐based catalysts. Firstly, the thermodynamics and elementary steps of DRM, including the activation of reactants and coke formation and elimination, are summarized. The roles of Al2O3 and its mixed oxides as the support, and the influences of the promoters employed in NiAl‐based catalysts over the DRM performance, are then illustrated. Finally, the design of anti‐coking and anti‐sintering NiAl‐based catalysts for DRM is suggested as feasible and promising by tailoring the structure and states of Ni and the modification of Al‐based supports including small Ni size, high Ni dispersion, proper basicity, strong metal‐support interaction (SMSI), active oxygen species as well as high phase stability.

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Highly dispersed Ni/Al2O3 catalysts for dry reforming of methane prepared by alkaline-induced adsorption process

Cited by 15 publications

References 59 publications

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

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

Supported Ni Catalysts: Simple Vapor Deposition Preparation Method and Improved Catalytic Performance for Oxidative Dehydrogenation of Ethane

Unbounding the Future: Designing NiAl‐Based Catalysts for Dry Reforming of Methane

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