Highly active and stable Ni-incorporated spherical silica catalysts for CO2methanation

Kuhaudomlap, Sasithorn; Praserthdam, Piyasan; Shirai, Masayuki; Panpranot, Joongjai

doi:10.1016/j.cattod.2019.07.041

Cited by 11 publications

(6 citation statements)

References 34 publications

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“…The reducibility of Ni nanoparticles was enhanced by improving electron capturing of Ni species during the electron transfer from the Zn redox. The O 1s of Figure c shows surface oxygen at 532.1 eV . Similarly, the electronic state of the Si element in catalysts presents at 104.0–103.5 eV, as shown in Figure d .…”

Section: Resultsmentioning

confidence: 69%

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Insights into the Zn Promoter for Improvement of Ni/SiO₂ Catalysts Prepared by the Ammonia Evaporation Method toward CO₂ Methanation

Chen

Ullah

et al. 2023

Energy Fuels

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As a pure combustible gas with a high calorific value, methane has long been favored, and that is why the CO2 methanation reaction is attracting more and more attention. However, it is still challenging for this reaction due to the chemical inertness of CO2 molecules, poor reaction efficiency at low temperatures, catalyst sintering at high temperatures, and carbon monoxide toxicity. Herein, the ammonia evaporation method was utilized to synthesize a series of Zn-modified Ni/SiO2 catalysts with high surface area and high dispersity of active metals. The 80Ni-Zn/SiO2 catalyst with an appropriate Ni/Zn molar ratio of 80:1 exhibited a high-performance breakthrough with a CO2 conversion greater than 80% at 300 °C, good stability for 40 h at 310 °C, and a gas hourly space velocity of 18,000 mL·g–1·h–1. These catalysts were further characterized by using a series of methods like in situ diffuse reflectance infrared Fourier transform spectroscopy to investigate the structural properties and potential reaction pathways. The effect of the Zn promoter on the Ni/SiO2 catalyst for CO2 methanation has been well investigated, namely, improving Ni dispersion and enhancing the H2 adsorption. The findings demonstrate the broad availability, affordability, and remarkable high-performance practicability of the raw ingredients for the production of Ni-based catalysts for commercial applications.

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Section: Resultsmentioning

confidence: 69%

“…The O 1s of Figure 5c shows surface oxygen at 532.1 eV. 38 Similarly, the electronic state of the Si element in catalysts presents at 104.0−103.5 eV, as shown in Figure 5d. 39 The XPS results indicated that Ni atomic percentages in the calcined Ni/SiO 2 and 80Ni-Zn/SiO 2 catalysts are 11.06 and 14.48%, respectively.…”

Section: Xps Analysesmentioning

confidence: 74%

Insights into the Zn Promoter for Improvement of Ni/SiO₂ Catalysts Prepared by the Ammonia Evaporation Method toward CO₂ Methanation

Chen

Ullah

et al. 2023

Energy Fuels

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“…47-1049), and MoO 3 (2θ = 27.3°, JCPDS card no. 05-0508). − It should be noted that the diffraction of the NiAl 2 O 4 phase overlapped with γ-Al 2 O 3 , which may be due to the formation of NiAl 2 O 4 caused by NiO migrated into the γ-Al 2 O 3 phase during the calcination process. It is obvious that the intensity of characteristic peaks ascribed to the NiO phase at 2θ = 43.3 and 62.9° increase gradually with the increasing introduction of sucrose, while the peak intensity of the NiAl 2 O 4 phase decreases gradually, which may be due to the formation of the NiO phase through the inhibition of NiAl 2 O 4 species.…”

Section: Resultsmentioning

confidence: 99%

Effect of Carbon Modification on Properties of NiMo/γ-Al₂O₃ and Its Catalytic Performance in the Hydrogenation of Methyl Acrylate

Sun,

Zhao,

Wang

et al. 2023

Ind. Eng. Chem. Res.

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A series of NiMo/γ-Al 2 O 3 catalysts modified using carbon for the regulation of interaction between the active metals and γ-Al 2 O 3 support was prepared for the hydrogenation of methyl acrylate. The catalysts were studied by employing BET, XRD, UV−vis diffuse reflectance spectra, H 2 -TPR, XPS, and TEM to explore the effect of carbon introduction on physical properties. The results demonstrated that the introduction of carbon could effectively change the interaction between the active species and carriers, especially inhibiting the formation of the NiAl 2 O 4 phase, which was not conducive to the hydrogenation process. In addition, the calcination temperature also exhibited an important effect on the formation of the NiAl 2 O 4 phase and the dispersion of active components. The influence of reaction conditions and catalytic stability were also studied. Among the catalysts, the highest yield of methyl propionate could be achieved as 71.9% with 100% selectivity on the optimal SA 0.6 Ni 10 Mo 10 /γ-Al 2 O 3 catalyst, and it remained stable after 12 h time-on-stream.

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“…22 Shape-dened and highly porous silica materials carefully supported with tailored Ni nanoparticles have been found to propel this reaction at a good rate. 71,72 CO 2 methanation has attracted attention for the production of synthetic natural gas (SNG), paving the way for novel and ambitious power-to-gas (P2G) processes for chemical energy storage, which is aimed at reducing emissions. 52,73 Furthermore, besides the utilization of methane as an energy vector as SNG, it is also consumed as an auxiliary C 1 feedstock together with CO 2 abatement and utilization in the DRM reaction to produce syngas, in which CO 2 also functions as a so oxidant.…”

Section: Products By Thermocatalytic Co 2 Reactionsmentioning

confidence: 99%

Thermocatalytic CO₂conversion by siliceous matter: a review

et al. 2023

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Highly active and stable Ni-incorporated spherical silica catalysts for CO2methanation

Cited by 11 publications

References 34 publications

Insights into the Zn Promoter for Improvement of Ni/SiO₂ Catalysts Prepared by the Ammonia Evaporation Method toward CO₂ Methanation

Insights into the Zn Promoter for Improvement of Ni/SiO₂ Catalysts Prepared by the Ammonia Evaporation Method toward CO₂ Methanation

Effect of Carbon Modification on Properties of NiMo/γ-Al₂O₃ and Its Catalytic Performance in the Hydrogenation of Methyl Acrylate

Thermocatalytic CO₂conversion by siliceous matter: a review

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Highly active and stable Ni-incorporated spherical silica catalysts for CO2methanation

Cited by 11 publications

References 34 publications

Insights into the Zn Promoter for Improvement of Ni/SiO2 Catalysts Prepared by the Ammonia Evaporation Method toward CO2 Methanation

Insights into the Zn Promoter for Improvement of Ni/SiO2 Catalysts Prepared by the Ammonia Evaporation Method toward CO2 Methanation

Effect of Carbon Modification on Properties of NiMo/γ-Al2O3 and Its Catalytic Performance in the Hydrogenation of Methyl Acrylate

Thermocatalytic CO2conversion by siliceous matter: a review

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Insights into the Zn Promoter for Improvement of Ni/SiO₂ Catalysts Prepared by the Ammonia Evaporation Method toward CO₂ Methanation

Insights into the Zn Promoter for Improvement of Ni/SiO₂ Catalysts Prepared by the Ammonia Evaporation Method toward CO₂ Methanation

Effect of Carbon Modification on Properties of NiMo/γ-Al₂O₃ and Its Catalytic Performance in the Hydrogenation of Methyl Acrylate

Thermocatalytic CO₂conversion by siliceous matter: a review