Methanation of carbon dioxide on Ni/(Zr-Sm)Ox catalysts

Habazaki, H.; Yamasaki, Michiaki; Kawashima, A.; Hashimoto, Kôji

doi:10.1002/1099-0739(200012)14:12<803::aid-aoc89>3.0.co;2-j

Cited by 36 publications

(16 citation statements)

References 12 publications

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“…It has been demonstrated that the catalytic activity increases with the amount of t-ZrO 2 [144,146], achieving the maximum methanation rate at 300 • C with a catalyst prepared from amorphous alloy precursors. The catalytic activity can be significantly enhanced on Ni/ZrO 2 catalysts prepared by Ni/Zr/earth elements alloys [147][148][149][150]. In the Ni/Zr/5at%Sm, samarium stabilizes tetragonal zirconia and increases the number of surface nickel atoms [146].…”

Section: Silica-supported Nickelmentioning

confidence: 99%

Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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CO 2 methanation is a well-known reaction that is of interest as a capture and storage (CCS) process and as a renewable energy storage system based on a power-to-gas conversion process by substitute or synthetic natural gas (SNG) production. Integrating water electrolysis and CO 2 methanation is a highly effective way to store energy produced by renewables sources. The conversion of electricity into methane takes place via two steps: hydrogen is produced by electrolysis and converted to methane by CO 2 methanation. The effectiveness and efficiency of power-to-gas plants strongly depend on the CO 2 methanation process. For this reason, research on CO 2 methanation has intensified over the last 10 years. The rise of active, selective, and stable catalysts is the core of the CO 2 methanation process. Novel, heterogeneous catalysts have been tested and tuned such that the CO 2 methanation process increases their productivity. The present work aims to give a critical overview of CO 2 methanation catalyst production and research carried out in the last 50 years. The fundamentals of reaction mechanism, catalyst deactivation, and catalyst promoters, as well as a discussion of current and future developments in CO 2 methanation, are also included.

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Section: Silica-supported Nickelmentioning

confidence: 99%

Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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“…They studied Ni/ZrO 2 catalysts modified with rare earth elements in the methanation of carbon dioxide, and found an improved activity on the Ni/(Zr-Sm)O x catalysts [1][2][3][4][5]. These catalysts were prepared either by the conventional wet impregnation method, or from amorphous nickel-samarium-alloys.…”

Section: Introductionmentioning

confidence: 99%

Methanation of Carbon Dioxide on Ni Catalysts on Mesoporous ZrO2 Doped with Rare Earth Oxides

et al. 2009

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About 20-40 mol% Ni/ZrO 2 catalysts doped with Ce and Sm were synthesized by an ultrasound-assisted method and characterized by a number of physico-chemical methods (XRD, HR TEM, BET, XPS). It was demonstrated that the synthesized catalysts had a mesoporous structure, where ca. 10 nm size Ni nanoparticles were incorporated into the rare earth metal modified tetragonal zirconium oxide. The Ni particles formed during the reduction treatment could support the porous structure in the supports, and thus the porous properties of the catalysts were related to the Ni-loading. The maximum porous volume and size were obtained for the catalyst with a 30 mol% Ni loading, which coincidentally exhibited the highest catalytic activity for the methanation of CO 2 . After an oxidation-reduction pretreatment, the catalytic activity could be further improved. The increase in the catalytic activity was attributed to the formation of additional active centers on the catalysts' surface.

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“…In the last two decades, amorphous and nanocrystalline alloys have emerged as promising alloys with novel mechanical, [1][2][3] magnetic [4][5][6][7] and catalytic [8][9][10][11] properties and excellent corrosion resistance. [12][13][14][15][16][17] These alloys have been largely developed by rapid solidification and physical vapor deposition techniques.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sodium Hypophosphite on the Structure and Properties of Electrodeposited Ni-W-P Alloys

et al. 2003

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Amorphous and nanocrystalline Ni-W-P alloy films have been prepared by electrodeposition. The effect of sodium hypophosphite in the bath is important in determining the W and P contents of the alloy. The alloys prepared in the bath containing more than about 0.15 mol/L of sodium hypophosphite are only Ni-P alloys containing high P contents (>21% (at)) and no W at all. However, as the sodium hypophosphite content is decreased, the W content in the alloy increases and reaches about 20% (at) with decreasing P content to about 1% (at) at 6 Â 10 À4 mol/L of sodium hypophosphite. The alloys containing high P contents are amorphous, while those containing high W contents have a nanocrystalline phase with apparent grain size of 2.3 nm at 20% (at) W content. These nanocrystalline alloys show high hardness values up to about 780 MVH.

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Methanation of carbon dioxide on Ni/(Zr-Sm)Ox catalysts

Cited by 36 publications

References 12 publications

Supported Catalysts for CO2 Methanation: A Review

Supported Catalysts for CO2 Methanation: A Review

Methanation of Carbon Dioxide on Ni Catalysts on Mesoporous ZrO2 Doped with Rare Earth Oxides

Effect of Sodium Hypophosphite on the Structure and Properties of Electrodeposited Ni-W-P Alloys

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