Enhanced CO hydrogenation performance via two-dimensional NiAl-layered double oxide decorated by SiO2 nanoparticles

Yan, Wenxia; Bao, Wentao; Tang, Ying; Li, Yangyang; Zhang, Jie; Zhao, Huanhuan; Li, Jiangbing; Ye, Feng

doi:10.1016/j.ijhydene.2022.07.180

Cited by 4 publications

(5 citation statements)

References 51 publications

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“…The high-resolution (HR) TEM images of the reduced catalysts ( Figure 2 g–i) show the lattice arrangement of the (200) crystal plane of NiO and (111) crystal plane of Ni, with lattice spacings of approximately 0.2090 and 0.2035 nm, respectively, which correlate well with the XRD patterns. The TEM energy dispersive spectroscopy (EDS) results in Figure 3 showed uniform dispersion of Ni, Al and Si elements in all of the reduced catalysts [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

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Silica-Decorated NiAl-Layered Double Oxide for Enhanced CO/CO2 Methanation Performance

Yan

Zeng

et al. 2022

Nanomaterials

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CO/CO2 hydrogenation has attracted much attention as a pathway to achieve carbon neutrality and production of synthetic natural gas (SNG). In this work, two-dimensional NiAl layered double oxide (2D NiAl-LDO) has been successfully decorated by SiO2 nanoparticles derived from SiCl4 and used as CO/CO2 methanation catalysts. The as-obtained H-SiO2-NiAl-LDO exhibited a large specific surface area of 201 m2/g as well as high ratio of metallic Ni0 species and surface adsorption oxygen that were beneficial for low-temperature methanation of CO/CO2. The conversion of CO methanation was 99% at 400 °C, and that of CO2 was 90% at 350 °C. At 250 °C, the CO methanation reached 85% whereas that of CO2 reached 23% at 200 °C. We believe that this provides a simple method to improve the methanation performance of CO and CO2 and a strategy for the modification of other similar catalysts.

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Section: Resultsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Silica-Decorated NiAl-Layered Double Oxide for Enhanced CO/CO2 Methanation Performance

Yan

Zeng

et al. 2022

Nanomaterials

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“…CO hydrogenation is an important reaction system, in which depending on the type of catalyst and the appropriate operating conditions (such as space velocity, reaction temperature, total pressure, and feed gas composition), different basic organic chemical products can be manufactured. For example, using copper based catalysts can produce methanol, [3] using molybdenum based catalysts can produce alcohols, [4] and using nickel based catalysts can produce natural gas [5] . When cobalt or iron based catalysts are employed, the CO hydrogenation process can produce important hydrocarbon chemicals such as gasoline, diesel, kerosene, wax, and gaseous hydrocarbons (such as lower olefins) [6–11] .…”

Section: Methodsmentioning

confidence: 99%

“…For example, using copper based catalysts can produce methanol, [3] using molybdenum based catalysts can produce alcohols, [4] and using nickel based catalysts can produce natural gas. [5] When cobalt or iron based catalysts are employed, the CO hydrogenation process can produce important hydrocarbon chemicals such as gasoline, diesel, kerosene, wax, and gaseous hydrocarbons (such as lower olefins). [6][7][8][9][10][11] Generally, compared with iron-based catalysts, cobalt based catalysts have a lower ability to inhibit CÀ C coupling and a weaker inhibitory effect on hydrogenation, making them more suitable for manufacturing saturated hydrocarbons with longer carbon chains (especially saturated hydrocarbons with longer chains).…”

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confidence: 99%

Construction of Nanoflower Cobalt‐Based Catalyst for Methane‐Free CO Hydrogenation to Hydrocarbon Reaction

Liu,

Wu,

Liu

et al. 2024

Chemistry An Asian Journal

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Methane and its oxidation product (i.e., CO2) are both greenhouse gases. In the product chain of CO hydrogenation to hydrocarbon reaction, methane is also an unwanted product due to its poor added value. Herein we investigated the effect of structure‐directing agent urotropine on cobalt‐based catalyst supported on Al–O–Zn type carrier and achieved an initial and pioneering exploration of methane‐free CO hydrogenation to hydrocarbon reaction at mild CO conversion range. The catalyst modified by urotropine has a nanoflower micromorphology and can significantly change the reaction performance, almost completely eliminating the ability of the catalyst to inhibit C–C coupling within a mild CO conversion range, that is, it can produce no or less C1‐C4 gaseous hydrocarbons, while rich in condensed hydrocarbons (i.e., C5+ hydrocarbon selectivity can reach as high as 92.8%‐100.0%).

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“…For Ni2p1/2 spectra, two deconvoluted peaks at binding energies of 874.2 and 872.1 eV can be indexed to Ni 3+ and Ni 2+ , respectively [31]. The Ni 0 characteristic peak located at 851.9 eV is significantly large, indicating that the active Ni component can be reduced at a lower temperature in the NiAl/NA catalyst [32]. In the case of the NiAl powder catalyst, the characteristic peak intensity of Ni 3+ is much weaker, and the Ni 0 species is negligible.…”

Section: Physiochemical Properties Of the Fresh Catalystsmentioning

confidence: 99%

Catalytic Steam-Reforming of Glycerol over LDHs-Derived Ni-Al Nanosheet Array Catalysts for Stable Hydrogen Production

et al. 2023

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In the present work, LDHs–derived Ni–Al nanosheet arrays (NiAl/NA) were successfully synthesized via a one–step hydrothermal method, and applied in the steam-reforming of glycerol reaction for enhanced and stable hydrogen production. The physicochemical properties of catalysts were characterized using various techniques, including XRD, SEM–EDS, XPS, N2–physisorption, Raman, and TG–DTG. The results indicate that smooth and cross–linked Ni–Al mixed metal oxide nanosheets were orderly and perpendicularly grown on the Ni foam substrate. The SEM line scan characterization reveals the metal concentration gradient from the bottom to the top of nanosheet, which leads to distinctly optimized Ni valence states and an optimized binding strength to oxygen species. Owing to the improved reducibility and more exposed active sites afforded by its array structures, the NiAl/NA catalyst shows enhanced glycerol conversion (83.1%) and a higher H2 yield (85.4%), as well as longer stability (1000 min), compared to the traditional Ni–Al nanosheet powder. According to the characterization results of spent catalysts and to density functional theory (DFT) calculations, coke deposition is effectively suppressed via array construction, with only 1.25 wt.% of amorphous carbons formed on NiAl/NA catalyst via CO disproportionation.

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Enhanced CO hydrogenation performance via two-dimensional NiAl-layered double oxide decorated by SiO2 nanoparticles

Cited by 4 publications

References 51 publications

Silica-Decorated NiAl-Layered Double Oxide for Enhanced CO/CO2 Methanation Performance

Silica-Decorated NiAl-Layered Double Oxide for Enhanced CO/CO2 Methanation Performance

Construction of Nanoflower Cobalt‐Based Catalyst for Methane‐Free CO Hydrogenation to Hydrocarbon Reaction

Catalytic Steam-Reforming of Glycerol over LDHs-Derived Ni-Al Nanosheet Array Catalysts for Stable Hydrogen Production

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