Catalytic methanation of carbon dioxide captured from ambient air

Veselovskaya, Janna V.; Parunin, Pavel D.; Netskina, O.V.; Kibis, Lidiya S.; Лысиков, А. И.; Okunev, A. G.

doi:10.1016/j.energy.2018.06.180

Cited by 51 publications

(26 citation statements)

References 28 publications

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“…Apart from the use of a single solid that incorporates both sorption and methanation functions, the process of integrated CO 2 capture and conversion to methane can be realized via the combination of two different solids that perform these functions individually. Veselovskaya et al published a number of works that incorporated the use of a K 2 CO 3 /Al 2 O 3 sorbent and a Ru/Al 2 O 3 methanation catalyst [126][127][128]. The high CO 2 sorption capabilities of the K 2 CO 3 -based sorbent enabled it to capture CO 2 directly from ambient air (direct air capture or DAC), where its concentration is as low as 400 ppm.…”

Section: Configuartions Using a Seperate Sorbent And Methanation Catamentioning

confidence: 99%

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

et al. 2020

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CO2 methanation has great potential for the better utilization of existing carbon resources via the transformation of spent carbon (CO2) to synthetic natural gas (CH4). Alkali and alkaline earth metals can serve both as promoters for methanation catalysts and as adsorbent phases upon the combined capture and methanation of CO2. Their promotion effect during methanation of carbon dioxide mainly relies on their ability to generate new basic sites on the surface of metal oxide supports that favour CO2 chemisorption and activation. However, suppression of methanation activity can also occur under certain conditions. Regarding the combined CO2 capture and methanation process, the development of novel dual-function materials (DFMs) that incorporate both adsorption and methanation functions has opened a new pathway towards the utilization of carbon dioxide emitted from point sources. The sorption and catalytically active phases on these types of materials are crucial parameters influencing their performance and stability and thus, great efforts have been undertaken for their optimization. In this review, we present some of the most recent works on the development of alkali and alkaline earth metal promoted CO2 methanation catalysts, as well as DFMs for the combined capture and methanation of CO2.

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Section: Configuartions Using a Seperate Sorbent And Methanation Catamentioning

confidence: 99%

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

et al. 2020

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“…Their active component is limited to metals of group VIII [9][10][11][12]. Herewith, the preference is given to nickel, which combines successfully low cost with acceptable catalytic activity in CO 2 methanation [13][14][15]. Various metal oxides are used as a support for nickel [16], but most publications consider catalysts based on cheap and commercially available γ-alumina with a mesoporous structure which is changed moderately up to 600 • C compared to ZrO 2 and CeO 2 [17].…”

Section: Introductionmentioning

confidence: 99%

CO2 Methanation: Nickel–Alumina Catalyst Prepared by Solid-State Combustion

et al. 2021

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The development of solvent-free methods for the synthesis of catalysts is one of the main tasks of green chemistry. A nickel–alumina catalyst for CO2 methanation was synthesized by solid-state combustion method using hexakis-(imidazole) nickel (II) nitrate complex. Using X-ray Powder Diffraction (XRD), Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Hydrogen temperature-programmed reduction (H2-TPR), it was shown that the synthesized catalyst is characterized by the localization of easily reduced nickel oxide on alumina surface. This provided low-temperature activation of the catalyst in the reaction mixture containing 4 vol% CO2. In addition, the synthesized catalyst had higher activity in low-temperature CO2 methanation compared to industrial NIAP-07-01 catalyst, which contained almost three times more hard-to-reduce nickel–aluminum spinel. Thus, the proposed approaches to the synthesis and activation of the catalyst make it possible to simplify the catalyst preparation procedure and to abandon the use of solvents, which must be disposed of later on.

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“…1 Configurations of CO 2 adsorption coupled to methanation process. The "CO2 source" is the complex flue gas from a combustion plant, for example a Separated units for the adsorption of CO 2 and for its methanation, b adsorbent and catalyst placed together in the same unit (either mechanically mixed, in multilayers or as two separate beds), c dual functional material able to perform both adsorption and methanation loaded in the same unit adsorbent applied for such "direct air capture for methanation" [60]. These authors also discuss how the energy produced by the methanation reactor can reduce the operating cost mainly associated with regeneration in the capture step.…”

Section: Two Solids In Two Separate Unitsmentioning

confidence: 99%

Combining CO2 capture and catalytic conversion to methane

Bravo

Debecker

2019

Waste Dispos. Sustain. Energy

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Considering the global objective to mitigate climate change, import efforts are made on decreasing the net emission of CO 2 from gas effluents. On the one hand CO 2 capture-for example by adsorption onto solid basic materials-allows to withdraw CO 2 from the waste gas streams emitted by incinerators, cement manufacture plants, combustion plants, power plants, etc. On the second hand, CO 2 can be converted to useful chemicals-e.g. hydrogenation to methane-using appropriate heterogeneous catalysts. A relatively innovative strategy consists in combining both technologies by designing materials and processes which can switch between capture and methanation modes cyclically. This allows treating complex waste gas effluents by selectively and reversibly capturing CO 2 , and to perform the catalytic hydrogenation in appropriate reaction conditions. This short review presents the main strategies recently reported in the literature for such combined CO 2 capture and methanation (CCCM) processes. We discuss the different types of reactor configurations and we present the formulations used in this context as adsorbent, as methanation catalysts, and as "dual functional materials".

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Catalytic methanation of carbon dioxide captured from ambient air

Cited by 51 publications

References 28 publications

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

CO2 Methanation: Nickel–Alumina Catalyst Prepared by Solid-State Combustion

Combining CO2 capture and catalytic conversion to methane

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