CO2 methanation over Fe- and Mn-promoted co-precipitated Ni-Al catalysts: Synthesis, characterization and catalysis study

Burger, Thomas; Koschany, Franz; Thomys, Oliver; Köhler, Klaus; Hinrichsen, Olaf

doi:10.1016/j.apcata.2018.03.021

Cited by 87 publications

(58 citation statements)

References 62 publications

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“…The enhancement of the catalytic activity was observed with low percentage of molybdenum loading on the nickel alumina catalyst. Also, the effect of iron as a catalyst promoter on a Ni‐Al 2 O 3 catalyst was investigated by Burger et al in the temperature range of 150–400 °C. According to their results, it was shown that the addition of Fe to Ni‐Al 2 O 3 had a positive effect on the enhancement of CO 2 conversion.…”

Section: Resultsmentioning

confidence: 99%

Parametric Study of CO₂ Methanation for Synthetic Natural Gas Production

2019

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The production of methane by carbon dioxide hydrogenation through optimization of the operating parameters to enhance methane yield and carbon dioxide conversion in a two‐stage fixed bed reactor is investigated. The influence of temperature, gas hourly space velocity (GHSV), and H2:CO2 ratio on the production of methane is studied. In addition, different methanation catalysts in terms of metal promoters and support materials are investigated to maximize methane production. The results show that the maximum methane yield and maximum carbon dioxide conversion are obtained at a catalyst temperature of 360 °C with a H2:CO2 ratio of 4:1 and total GHSV of 6000 mL h−1 g−1catalyst and reactant GHSV of 3000 mL h−1 g−1catalyst. The optimum metal‐alumina catalyst investigated for CO2 conversion and methane yield is the 10 wt%‐Ni‐Al2O3 catalyst. However, reduction in the methane yield is observed with the addition of Fe and Co promoters because of catalyst sintering and nonuniform dispersion of metals on the support. Among the different catalyst support materials studied, i.e., Al2O3, SiO2 and MCM‐41, the highest catalytic activity is shown by the Al2O3 catalyst with 83 mol% CO2 conversion, producing 81 mol% CH4 with 98% CH4 selectivity.

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Section: Resultsmentioning

confidence: 99%

Parametric Study of CO₂ Methanation for Synthetic Natural Gas Production

2019

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“…CO 2 methanation can reach 99 % CH 4 selectivity through the use of appropriate catalysts, avoiding the subsequent product separation and overcoming the difficulty of dispersed product distribution. [19] The most studied noble and nonnoble metalbased catalysts for CO 2 methanation are Ni, [100][101][102] Ru, [103][104][105] Rh, [106,107] Pd, [108,109] Co, [110,111] Fe, [112,113] Cu, [114,115] Pt, [116] Ag [39] and Au [39] catalysts from which the most important role to methanation process has Ru, Fe, Ni, and Co. [39,117] According to the various studies the activity performance and selectivity of different metal-based catalysts decreases in the following order: [118] Ni and Ru are reported to have maximum activity and stability. [119] Ni based catalysts are very effective due to the presence of easily transferable electrons in the frontier d orbitals and therefore are the most efficient and active catalytic system together with alumina as a support that may be applied on industrial scale.…”

Section: Challenges In Catalytic Co 2 Methanationmentioning

confidence: 99%

Recent Developments in the Modelling of Heterogeneous Catalysts for CO₂ Conversion to Chemicals

et al. 2020

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Density functional theory (DFT) of the CO2 behavior on the catalyst surface provides valuable insights about the C=O bond activation, information about adsorption and dissociation of CO2, understanding the elementary steps involved in the mechanism of the CO2 hydrogenation reaction. Nowadays, DFT computational studies for the catalytic hydrogenation of CO2 are becoming very popular. Therefore, this article is focused on a comprehensive review of the DFT studies in thermocatalytic hydrogenation of CO2 at the gas‐surface interface and discusses three aspects: 1) processes taking place on the surfaces and facets of transition metal heterogeneous catalysts, 2) adsorption of CO2 on surfaces of different transition metals; 3) current understanding of reaction mechanisms taking place on the catalytic surface for the production of different compounds. A detailed schematic overview of the possible CO2 hydrogenation mechanisms and DFT simulations presented here will enhance the current understanding of the CO2 catalytic hydrogenation.

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“…Note that CO 2 adsorption on weak and medium basic sites was a favorable outcome for the methanation process, whereas the strong basic sites could not participate in CO 2 activation [9,34]. It is still controversial to nominate which out of the weak or medium basic sites would be more favorable for CO 2 activation [7,9,35]. and Ni/Al@ZnAl 2 O 4 (DP) ( Table S2).…”

Section: Characterization Of Catalystsmentioning

confidence: 99%

“…As shown in Figure 8, the immediate appearance of new bands at 3016, 2840, 1595, 1376, and 1304 cm −1 , accompanied by apparent attenuation of the carbonates bands at 1650, 1550, 1430, and 1230 cm −1 , could be seen at low reaction temperatures, with the new bands at 3016 and 1304 cm −1 evidently methane. The other new peaks were divided into two groups: (i) 2840, 1595, and 1376 cm −1 and (ii) 1340 cm −1 , and these were assigned to bidentate and monodentate formate species, respectively [7,9,21,[39][40][41][42].…”

Section: Catalytic Performancementioning

confidence: 99%

“…Therefore, development of a catalyst that is very active at low temperatures, as well as application of a highly thermal conduction material, is desirable to guarantee low-temperature operation without hotspots in the catalyst bed. Ni-based catalysts have been widely used in commercial methanation processes, based on their reasonable activity level, low cost, and high availability, compared with noble metal catalysts [4][5][6][7][8][9][10][11][12][13][14][15][16]. It has been reported that the low thermal conductivity of the ceramic support might cause metal sintering, especially for highly exothermic reactions [17,18].…”

Section: Introductionmentioning

confidence: 99%

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CO2 Methanation over Ni/Al@MAl2O4 (M = Zn, Mg, or Mn) Catalysts

Kim

Jeong

et al. 2019

Catalysts

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In this study, unique core-shell aluminate spinel supports, Al@MAl2O4 (M = Zn, Mg, or Mn), were obtained by simple hydrothermal surface oxidation and were applied to the preparation of supported Ni catalysts for CO2 methanation. For comparison, CO methanation was also evaluated using the same catalysts. The prepared catalysts were characterized with a variety of techniques, including N2 physisorption, CO2 chemisorption, H2 chemisorption, temperature-programmed reduction with H2, temperature-programmed desorption of CO2, X-ray diffraction, high-resolution transmission electron microscopy, and in-situ diffuse reflectance infrared Fourier transform spectroscopy. The combination of supports with core-shell spinel structures and Ni doping with a deposition–precipitation method created outstanding catalytic performance of the Ni catalysts supported on Al@MgAl2O4 and Al@MnAl2O4 due to improved dispersion of Ni nanoparticles and creation of moderate basic sites with suitable strength. Good stability of Ni/Al@MnAl2O4 catalyst was also confirmed in the study.

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CO2 methanation over Fe- and Mn-promoted co-precipitated Ni-Al catalysts: Synthesis, characterization and catalysis study

Cited by 87 publications

References 62 publications

Parametric Study of CO₂ Methanation for Synthetic Natural Gas Production

Parametric Study of CO₂ Methanation for Synthetic Natural Gas Production

Recent Developments in the Modelling of Heterogeneous Catalysts for CO₂ Conversion to Chemicals

CO2 Methanation over Ni/Al@MAl2O4 (M = Zn, Mg, or Mn) Catalysts

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CO2 methanation over Fe- and Mn-promoted co-precipitated Ni-Al catalysts: Synthesis, characterization and catalysis study

Cited by 87 publications

References 62 publications

Parametric Study of CO2 Methanation for Synthetic Natural Gas Production

Parametric Study of CO2 Methanation for Synthetic Natural Gas Production

Recent Developments in the Modelling of Heterogeneous Catalysts for CO2 Conversion to Chemicals

CO2 Methanation over Ni/Al@MAl2O4 (M = Zn, Mg, or Mn) Catalysts

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Parametric Study of CO₂ Methanation for Synthetic Natural Gas Production

Parametric Study of CO₂ Methanation for Synthetic Natural Gas Production

Recent Developments in the Modelling of Heterogeneous Catalysts for CO₂ Conversion to Chemicals