Small-sized Ni nanoparticles embedded nickel phyllosilicate as a metal-acid bifunctional zeolite catalyst for cooperatively boosting CO2-CH4 reforming

Huang, Chengming; Zhang, Yiming; Han, Dingmei; He, Binbin; Sun, Xiaofeng; Liu, Meiyu; Mei, Yi; Zu, Yun

doi:10.1016/j.fuel.2022.125957

Cited by 37 publications

(8 citation statements)

References 78 publications

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“…Ni 2p 3/2 can be deconvoluted into five peaks, including Ni 0 (852.4 eV), NiO (854.8 eV), Ni 2+ –O–Si (S-1) (855.8 eV), Ni 2+ –O–Si (PS) (856.9 eV), and the satellite peak (862.0 eV). 40–42 By excluding the satellite peak, the relative composition of each Ni species was estimated, as shown in Fig. 3.…”

Section: Resultsmentioning

confidence: 99%

Reversal of methanation-oriented to RWGS-oriented Ni/SiO₂ catalysts by the exsolution of Ni²⁺ confined in silicalite-1

Chen,

Huang

et al. 2023

Green Chem.

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Section: Resultsmentioning

confidence: 99%

Reversal of methanation-oriented to RWGS-oriented Ni/SiO₂ catalysts by the exsolution of Ni²⁺ confined in silicalite-1

Chen,

Huang

et al. 2023

Green Chem.

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“…To date, several different ligands have been reported to assist in the encapsulation of metal/oxide species within zeolite. Since these ligands have different sizes, hydrolysis rates, and interactions with a silica matrix, modulating the ligand type and usage may affect the size, distribution, and coordination environment of the encapsulated metal species. , For example, Song et al reported the use of cobalt disodium ethylenediaminetetraacetate and cobalt acetylacetonate as the metal sources to, respectively, introduce isolated framework Co 2+ and extraframework subnanometric CoO clusters (∼1 nm) within S-1 zeolites. The successful synthesis was evidenced by spherical aberration-corrected (AC−)STEM images and in situ DRIFT measurements.…”

Section: Metal-zeolite Catalystsmentioning

confidence: 99%

“…h i b i t e d .environment of the encapsulated metal species 21,140. For example, Song et al21 reported the use of cobalt disodium ethylenediaminetetraacetate and cobalt acetylacetonate as the metal sources to, respectively, introduce isolated framework Co2+ and extraframework subnanometric CoO clusters (∼1 nm) within S-1 zeolites.…”

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confidence: 99%

Recent Progress in Metal-Molecular Sieve Catalysts for Propane Dehydrogenation

et al. 2023

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Propane direct dehydrogenation (PDH) is an attractive technology for propylene production that has received extensive attention. Molecular sieves with uniform porous structure, high thermal stability, and unique confinement capability have been proven to be ideal supports for well-dispersed active sites to generate efficient PDH performance. In this review, we describe the progress in the synthesis and PDH performance of metal-molecular sieve catalysts, including metal-mesoporous silica, metal-zeolite, and metal-hierarchical zeolite catalysts. The strategies in identifying and regulating active site microstructure and metalmolecular sieve interactions as well as their correlations with active site structure and PDH mechanism are introduced simultaneously. Finally, the current limitations and future opportunities of metal-molecular sieve materials in the PDH reaction are also discussed. This review is expected to provide some guidance for future catalyst design based on utilizing the molecular sieve's structural confinement to facilitate propane activation and active site stabilization.

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“…Therefore, moderately acidic and basic support can be designed to restrain the deactivation of DRM catalysts as much as possible. Huang et al [95] prepared Ni-based catalysts via hydrothermal synthesis using S-1 molecular sieves with Lewis acid sites as the support and showed that the balance between the formation and consumption of carbon species in Ni@S-1 with Lewis acid sites (basic sites) is a key step in order to achieve efficient CO 2 -CH 4 dry reforming, which is beneficial for restraining the formation of carbon deposition. Jafarbegloo et al [96] prepared Ni-based catalysts using alkaline oxide MgO as a support via a one-step method and showed that the generation of NiO-MgO solid solution with an alkaline surface was beneficial for restraining the formation of carbon deposition.…”

Section: Adjusting the Acidity And Basicity Of The Supportmentioning

confidence: 99%

Deactivation Mechanism and Anti-Deactivation Measures of Metal Catalyst in the Dry Reforming of Methane: A Review

et al. 2023

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In recent decades, the massive emission of greenhouse gases, such as carbon dioxide and methane, into the atmosphere has had a serious impact on the ecological environment. The dry reforming of carbon dioxide and methane to syngas cannot only realize the resource utilization of methane and carbon dioxide but also reduce global climate change. It is of great significance in carbon emission reduction. Owing to the dry reforming of methane (DRM) being a strongly endothermic reaction, it needs to be carried out under high-temperature conditions. It makes the catalyst have problems of the sintering of metal, carbon deposition, and poisoning. This article revolves around the problem of catalyst deactivation during the DRM reaction. It expands upon the thermodynamics and mechanisms of the DRM reaction, analyzes the causes of metal catalyst deactivation due to carbon deposition, sintering, and poisoning, and summarizes how the active components, supports, and additives of metal catalysts restrain the DRM catalyst deactivation during the reaction. The analysis revealed that changing the type and size of the active metal, adjusting the properties of the support, and adding additives can further regulate the dispersion of the active component, the interaction between the active component and the support, the oxygen vacancies of the support, and the acidity and basicity of the catalyst surface, ultimately achieving control over the metal catalyst’s resistance to sintering, carbon deposition, and sulfur poisoning. In addition, it discusses the application of metal catalysts in photothermal and plasma-catalyzed DRM. Finally, it outlines the prospects for research on metal catalysts for the DRM.

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Small-sized Ni nanoparticles embedded nickel phyllosilicate as a metal-acid bifunctional zeolite catalyst for cooperatively boosting CO2-CH4 reforming

Cited by 37 publications

References 78 publications

Reversal of methanation-oriented to RWGS-oriented Ni/SiO₂ catalysts by the exsolution of Ni²⁺ confined in silicalite-1

Reversal of methanation-oriented to RWGS-oriented Ni/SiO₂ catalysts by the exsolution of Ni²⁺ confined in silicalite-1

Recent Progress in Metal-Molecular Sieve Catalysts for Propane Dehydrogenation

Deactivation Mechanism and Anti-Deactivation Measures of Metal Catalyst in the Dry Reforming of Methane: A Review

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Small-sized Ni nanoparticles embedded nickel phyllosilicate as a metal-acid bifunctional zeolite catalyst for cooperatively boosting CO2-CH4 reforming

Cited by 37 publications

References 78 publications

Reversal of methanation-oriented to RWGS-oriented Ni/SiO2 catalysts by the exsolution of Ni2+ confined in silicalite-1

Reversal of methanation-oriented to RWGS-oriented Ni/SiO2 catalysts by the exsolution of Ni2+ confined in silicalite-1

Recent Progress in Metal-Molecular Sieve Catalysts for Propane Dehydrogenation

Deactivation Mechanism and Anti-Deactivation Measures of Metal Catalyst in the Dry Reforming of Methane: A Review

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Reversal of methanation-oriented to RWGS-oriented Ni/SiO₂ catalysts by the exsolution of Ni²⁺ confined in silicalite-1

Reversal of methanation-oriented to RWGS-oriented Ni/SiO₂ catalysts by the exsolution of Ni²⁺ confined in silicalite-1