Support composition effect on the structures, metallic sites formation, and performance of Ni-Co-Mg-Al-O composite for CO2 reforming of CH4

Alabi, Wahab O.; Wang, Hui; Adesanmi, Bukola M.; Shakouri, Mohsen; Hu, Yongfeng

doi:10.1016/j.jcou.2020.101355

Cited by 7 publications

(3 citation statements)

References 45 publications

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“…In the presence of Al, a uniform laminar structure can be formed, providing a good environment for anchoring highly dispersed Ni particles. 74 The line scanning across two metal nanoparticles in 6Ni6CuMgAl−S showed that Ni and Cu gave rise to similar signals (Figure 3k,i). This result demonstrated that Ni and Cu 3.2.…”

Section: Resultsmentioning

confidence: 89%

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Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlO_x Nanosheets for Enhanced Syngas Production

Xiao

Hou

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Stable and efficient syngas production via methane dry reforming is highly desirable as it utilizes two greenhouse gases simultaneously. In this work, active Ni–Cu nanoalloys stably anchored on periclase-phase MgAlO x nanosheets were successfully synthesized by a hydrothermal method. These highly dispersed small Ni–Cu alloys strongly interacted with the periclase-phase MgAlO x nanosheets, on which abundant base sites were accessible. On the optimal catalyst (6Ni6CuMgAl–S), methane and carbon dioxide conversion always reached 85 and 90% at 700 °C under a gas hour speed velocity of 40,000 mL/gcat h for more than 70 h. The hydrogen production rate was maintained at 1.8 mmol/min, and the ratio of H2/CO was kept at approximately 0.96 under a CH4 and CO2 flow rate of 25 mL/min. Coke deposition and Ni sintering were effectively suppressed by the formation of a Ni–Cu alloy, the laminar structure, and the periclase phase of the MgAlO x support. Moreover, the alloy nanoparticles were reconstructed into a segregated Ni–Cu alloy structure in response to the reaction environment, and this structure was more stable and still active. Density functional theory calculations showed that carbon adsorption was inhibited on the segregated Ni–Cu alloy. Furthermore, the experimental thermogravimetric and O2-TPO results confirmed the significant decrease in carbon deposition on the Ni–Cu alloy catalysts.

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Section: Resultsmentioning

confidence: 89%

“…In addition, the average particle size of 12NiMgO–S without Al was measured to be 12.3 nm, demonstrating the important role of Al in controlling the Ni particle size. In the presence of Al, a uniform laminar structure can be formed, providing a good environment for anchoring highly dispersed Ni particles …”

Section: Resultsmentioning

confidence: 99%

Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlO_x Nanosheets for Enhanced Syngas Production

Xiao

Hou

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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“…Different chemical processes have shown to be viable for the conversion of carbon compounds to other useful industrial compounds [54][55][56][57][58][59], and chemical modification of organic carbon compound such as FF has yielded improvements to the moisture ability of the material [39]. Thus, these results quantify the effects of particle size, and chemical treatments on the latent No significant differences were observed in the effectiveness of the energy wheel for the three different particle sizes (125, 210, and 420 µm) and chemical treatments.…”

Section: Moisture Performance Of Ff Desiccantmentioning

confidence: 99%

Suitability of bio-desiccants for energy wheels in HVAC applications

Alabi

Krishnan

Karoyo

et al. 2021

Building and Environment

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Catalytic CO₂ Conversion to C1 Chemicals over Single‐Atom Catalysts

Zhang,

Yang,

Liu

et al. 2023

Advanced Energy Materials

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Carbon dioxide, as an abundant and nontoxic C1 resource, can be extensively applied to produce C1 building blocks via direct and indirect routes. On account of the stable electronic structure and high activation energy of CO2, the most challenging problem of CO2 conversion is the rational design of low‐cost and efficient catalysts with attractive performance. Single‐atom catalysts (SACs) with atomically dispersed metal atoms, strong metal–support interaction, and tunable/unsaturated coordination environment offer a potential choice by achieving maximum atomic utilization and lowering the CO2 activation barrier. Furthermore, the geometric and electronic structure of SACs can be easily regulated by tuning the coordination environment of single atoms, which significantly affects their catalytic performance. In this review, therefore, a comprehensive review of thermocatalytic CO2 conversion to C1 chemicals over SACs is presented. Specifically, the physiochemical and electronic properties, synthesis methods, and characterization technologies are introduced. Thereafter, an overview of catalytic performance and mechanism of SACs is described during thermocatalytic CO2 conversion to C1 chemicals. Finally, the main limitations of current studies on CO2 conversion to C1 chemicals over SACs are summarized, and simultaneouslyperspectives on the future are proposed, in order to provide a guidance for decarbonizing the industries and cycling greenhouse gases.

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Support composition effect on the structures, metallic sites formation, and performance of Ni-Co-Mg-Al-O composite for CO2 reforming of CH4

Cited by 7 publications

References 45 publications

Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlO_x Nanosheets for Enhanced Syngas Production

Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlO_x Nanosheets for Enhanced Syngas Production

Suitability of bio-desiccants for energy wheels in HVAC applications

Catalytic CO₂ Conversion to C1 Chemicals over Single‐Atom Catalysts

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Support composition effect on the structures, metallic sites formation, and performance of Ni-Co-Mg-Al-O composite for CO2 reforming of CH4

Cited by 7 publications

References 45 publications

Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlOx Nanosheets for Enhanced Syngas Production

Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlOx Nanosheets for Enhanced Syngas Production

Suitability of bio-desiccants for energy wheels in HVAC applications

Catalytic CO2 Conversion to C1 Chemicals over Single‐Atom Catalysts

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Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlO_x Nanosheets for Enhanced Syngas Production

Methane Dry Reforming by Ni–Cu Nanoalloys Anchored on Periclase-Phase MgAlO_x Nanosheets for Enhanced Syngas Production

Catalytic CO₂ Conversion to C1 Chemicals over Single‐Atom Catalysts