CO and CO2 Methanation Over Ni/SiC and Ni/SiO2 Catalysts

Le, Thien An; Kang, Jong Kyu; Park, Eun Duck

doi:10.1007/s11244-018-0965-7

Cited by 49 publications

(33 citation statements)

References 30 publications

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“…Silicon carbide (SiC) has some interesting properties, such as its stability at high temperatures, high thermal conductivity, and chemical inertness, which enables SiC to be used as a support for heterogeneous catalysts [29][30][31][32]. There have been some reports on the application of SiC as a substrate for OCM reactions.…”

Section: Introductionmentioning

confidence: 99%

Oxidative Coupling of Methane over Mn2O3-Na2WO4/SiC Catalysts

Kim

Park

et al. 2019

Catalysts

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The oxidative coupling of methane (OCM) is operated at high temperatures and is a highly exothermic reaction; thus, hotspots form on the catalyst surface during reaction unless the produced heat is removed. It is crucial to control the heat formed because surface hotspots can degrade catalytic performance. Herein, we report the preparation of Mn2O3-Na2WO4/SiC catalysts using SiC, which has high thermal conductivity and good stability at high temperatures, and the catalyst was applied to the OCM. Two Mn2O3-Na2WO4/SiC catalysts were prepared by wet-impregnation on SiC supports having different particle sizes. For comparison, the Mn2O3-Na2WO4/SiO2 catalyst was also prepared by the same method. The catalysts were analyzed by nitrogen adsorption–desorption, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The transformation of SiC into α-cristobalite was observed for the Mn2O3-Na2WO4/SiC catalysts. Because SiC was completely converted into α-cristobalite for the nano-sized SiC-supported Mn2O3-Na2WO4 catalyst, the catalytic performance for the OCM reaction of Mn2O3-Na2WO4/n-SiC was similar to that of Mn2O3-Na2WO4/SiO2. However, only the surface layer of SiC was transformed into α-cristobalite for the micro-sized SiC (m-SiC) in Mn2O3-Na2WO4/m-SiC, resulting in a SiC@α-cristobalite core–shell structure. The Mn2O3-Na2WO4/m-SiC showed higher methane conversion and C2+ yield at 800 and 850 °C than Mn2O3-Na2WO4/SiO2.

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Section: Introductionmentioning

confidence: 99%

Oxidative Coupling of Methane over Mn2O3-Na2WO4/SiC Catalysts

Kim

Park

et al. 2019

Catalysts

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“…Here, Al 2 O 3 seems to be the most widely studied material, as it provides the ability of high and homogeneous metal dispersion [36][37][38][39]. Typical metal or metal oxide loadings are reported in the range of 10-40 wt % [30,[36][37][38][39][40][41].…”

Section: Nickel-based Methanation Catalystsmentioning

confidence: 99%

A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

Strucks

Failing

Kaluza

2021

Chemie Ingenieur Technik

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.Today, the use of renewable energies and recycling of climate-changing gases are increasingly important. In this context, coupling of methanation with small, decentralized CO 2 sources such as biogas plants provides one possibility. However, fluctuating availability of renewables for hydrogen production in combination with small storage volumes result in an enhanced demand for dynamic process operation. This leads to new research challenges with respect to the required catalysts and the overall process design. To draw reliable conclusions about the catalytic performance under dynamic process operation, the mechanism of the methanation reaction as well as typical deactivation procedures of the catalyst applied under steady-state conditions have to be reviewed thoroughly.

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“…Therefore, research has mostly focused on improving the sintering resistance of the catalyst. For example, using MgO as a carrier and using the formed MgNiO 2 structural stability to prevent sintering of Ni species [82]; loading the Ni species into carbon nanotubes, using the tube wall to restrict the growth and agglomeration of Ni species, and properly adding Ca ions, will further improve the dispersibility of Ni on carbon nanotubes [83]; strong thermal conductivity, SiC, as a carrier reduces heat accumulation and prevents the high-temperature sintering of Ni species [84]. At the same time, in order to overcome the shortcomings of single active component catalysts in the reaction process, there are also studies of dual active metal or even multiple active metal catalysts for CO 2 methanation, such as the Ni-Ru/Al 2 O 3 catalyst prepared by Zhen et al [85] for the conversion of CO 2 and CH 4 selectivity, which reached 82.7% and 100%, respectively.…”

Section: Thermal Catalysismentioning

confidence: 99%

Analysis of Research Status of CO2 Conversion Technology Based on Bibliometrics

Xing

et al. 2020

Catalysts

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The concentration of carbon dioxide in the air has risen sharply due to the use of fossil fuels, causing environmental problems such as the greenhouse effect, which seriously threatens humans’ living environment. Reducing carbon dioxide emissions while addressing energy shortages requires the conversion of CO2 into high added-value products. In this paper, the status of CO2 conversion research in the past ten years is analyzed using the bibliometric method; the influence of countries and institutions, journal article statistics and other aspects are statistically analyzed, and the research status of carbon dioxide catalytic conversion is briefly introduced. Finally, according to the analysis results and the existing problems of CO2 catalytic conversion research, the future development direction of CO2 catalytic conversion research is prospected.

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CO and CO2 Methanation Over Ni/SiC and Ni/SiO2 Catalysts

Cited by 49 publications

References 30 publications

Oxidative Coupling of Methane over Mn2O3-Na2WO4/SiC Catalysts

Oxidative Coupling of Methane over Mn2O3-Na2WO4/SiC Catalysts

A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

Analysis of Research Status of CO2 Conversion Technology Based on Bibliometrics

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CO and CO2 Methanation Over Ni/SiC and Ni/SiO2 Catalysts

Cited by 49 publications

References 30 publications

Oxidative Coupling of Methane over Mn2O3-Na2WO4/SiC Catalysts

Oxidative Coupling of Methane over Mn2O3-Na2WO4/SiC Catalysts

A Short Review on Ni‐Catalyzed Methanation of CO2: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

Analysis of Research Status of CO2 Conversion Technology Based on Bibliometrics

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Product

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A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation