Mechanistic assessment of dual function materials, composed of Ru-Ni, Na2O/Al2O3 and Pt-Ni, Na2O/Al2O3, for CO2 capture and methanation by in-situ DRIFTS

Proaño, Laura; Arellano-Treviño, Martha A.; Farrauto, Robert J.; Figueredo, Manuel; Jeong-Potter, Chae; Cobo, Martha

doi:10.1016/j.apsusc.2020.147469

Cited by 79 publications

(68 citation statements)

References 35 publications

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“…Concerning reaction intermediates, Ru-carbonyls in the 1800–2050 range originate during the CO 2 adsorption step from the reduction of adsorbed CO 2 with residual hydrogen, as previously observed in the CO 2 -TPD test. Formates are also expected as intermediate species in the CH 4 formation pathway and have been observed by means of FT-IR spectroscopy both the direct methanation of CO 2 on Ru/Al 2 O 3 catalysts ,, and on the cyclic methanation on Na-Based DFMs. , However, the characteristic bands of such species are reasonably covered by the much more intense carbonates bands in the same spectral region.…”

Section: Resultsmentioning

confidence: 84%

Storage Material Effects on the Performance of Ru-Based CO₂ Capture and Methanation Dual Functioning Materials

Porta

Matarrese

Visconti

et al. 2021

Ind. Eng. Chem. Res.

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In this study, a systematic investigation on Dual Functioning Materials (DFMs) for the capture and methanation of CO2 is carried out. The attention is focused on the nature of the CO2 adsorbent component (storage material, SM) varying between alkaline (Li, Na, K) and alkaline-earth (Mg, Ca, Ba) metal oxides in combination with Ru, both supported on an Al2O3 support. Combining gas phase reactivity analysis and FT-IR characterization, the samples are characterized in terms of CO2 storage capacity. It is found that all the SM-containing samples adsorb significant amounts of CO2 as carbonate species, with the higher amounts being adsorbed when the more thermally stable species are formed, i.e., when Ca, Ba, or K are employed as SMs. In all cases, the hydrogenation of the adsorbed carbonates to CH4 occurs at lower temperature, if compared to their thermal desorption. However, in the case of Ca- and Ba-based DFMs, resilient carbonates are present on the material surface. It was found that the SMs able to form the more thermally stable carbonates upon CO2 adsorption also showed the best performances in capture/methanation cycles at 350 °C, even if some residual carbonates were left on the DFM after the hydrogenation step. In particular, the following order of reactivity has in fact been observed in terms of CH4 production: Ru–K ≥ Ru–Ba > Ru–Ca > Ru–Na ≫ Ru–Mg ≅ Ru–Li ≅ Ru. The presence of steam and O2 during the capture step has a detrimental effect on the CO2 adsorption for all samples and, as a result, on CH4 production due to the competition of CO2 and water for the same adsorption sites. Thus, only SMs able to form strongly bound carbonates species upon CO2 exposure can retain significant CO2 storage capacity also in the presence of water in the adsorption feed.

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Section: Resultsmentioning

confidence: 84%

Storage Material Effects on the Performance of Ru-Based CO₂ Capture and Methanation Dual Functioning Materials

Porta

Matarrese

Visconti

et al. 2021

Ind. Eng. Chem. Res.

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“…The addition of 1% Pt increased the NiO reducibility by 50%, compared to the 70% increase caused by the addition of 1% Ru [104]. Employing in-situ DRIFTS, it was shown that Pt acted to further promote CO 2 chemisorption and dissociation by forming Pt-CO species [105]. However, since Pt is not active for CH 4 formation, these chemisorbed carbonyl intermediates were found to spill over towards Ni sites upon H 2 inflow, where they were further hydrogenated into CH 4 .…”

Section: Promotion With Pdmentioning

confidence: 98%

“…Adding just 1% Ru in a DFM consisting of 10% Ni increased the reducibility of the Ni phase by 70% and thus enabled CH 4 production under isothermal cyclic operation [104]. Employing in-situ DRIFTS, it was shown that both Ru and Ni are active sites for the methanation reaction, with bicarbonate and bidentate carbonate intermediate species spilling over to both metals before being hydrogenated into CH 4 [105].…”

Section: Promotion With Rumentioning

confidence: 99%

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

et al. 2020

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CO2 methanation has recently emerged as a process that targets the reduction in anthropogenic CO2 emissions, via the conversion of CO2 captured from point and mobile sources, as well as H2 produced from renewables into CH4. Ni, among the early transition metals, as well as Ru and Rh, among the noble metals, have been known to be among the most active methanation catalysts, with Ni being favoured due to its low cost and high natural abundance. However, insufficient low-temperature activity, low dispersion and reducibility, as well as nanoparticle sintering are some of the main drawbacks when using Ni-based catalysts. Such problems can be partly overcome via the introduction of a second transition metal (e.g., Fe, Co) or a noble metal (e.g., Ru, Rh, Pt, Pd and Re) in Ni-based catalysts. Through Ni-M alloy formation, or the intricate synergy between two adjacent metallic phases, new high-performing and low-cost methanation catalysts can be obtained. This review summarizes and critically discusses recent progress made in the field of bimetallic Ni-M (M = Fe, Co, Cu, Ru, Rh, Pt, Pd, Re)-based catalyst development for the CO2 methanation reaction.

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“…Proano et al also studied the effect of alloying ruthenium or platinum with Ni to improve the catalytic properties of nickel catalysts for CO 2 methanation [112]. These alloys were combined with alkaline adsorbent for the capture of carbon dioxide and its subsequent methanation.…”

Section: Bimetallic Alloy Catalystsmentioning

confidence: 99%

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Abdel‐Mageed

Wohlrab

2021

Catalysts

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The valorization of carbon dioxide by diverting it into useful chemicals through reduction has recently attracted much interest due to the pertinent need to curb increasing global warming, which is mainly due to the huge increase of CO2 emissions from domestic and industrial activities. This approach would have a double benefit when using the green hydrogen generated from the electrolysis of water with renewable electricity (solar and wind energy). Strategies for the chemical storage of green hydrogen involve the reduction of carbon dioxide to value-added products such as methane, syngas, methanol, and their derivatives. The reduction of CO2 at ambient pressure to methane or carbon monoxide are rather facile processes that can be easily used to store renewable energy or generate an important starting material for chemical industry. While the methanation pathway can benefit from existing infrastructure of natural gas grids, the production of syngas could be also very essential to produce liquid fuels and olefins, which will also be in great demand in the future. In this review, we focus on the recent advances in the thermocatalytic reduction of CO2 at ambient pressure to basically methane and syngas on the surface of supported metal nanoparticles, single-atom catalyst (SACs), and supported bimetallic alloys. Basically, we will concentrate on activity, selectivity, stability during reaction, support effects, metal-support interactions (MSIs), and on some recent approaches to control and switch the CO2 reduction selectivity between methane and syngas. Finally, we will discuss challenges and requirements for the successful introduction of these processes in the cycle of renewable energies. All these aspects are discussed in the frame of sustainable use of renewable energies.

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Mechanistic assessment of dual function materials, composed of Ru-Ni, Na2O/Al2O3 and Pt-Ni, Na2O/Al2O3, for CO2 capture and methanation by in-situ DRIFTS

Cited by 79 publications

References 35 publications

Storage Material Effects on the Performance of Ru-Based CO₂ Capture and Methanation Dual Functioning Materials

Storage Material Effects on the Performance of Ru-Based CO₂ Capture and Methanation Dual Functioning Materials

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

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Mechanistic assessment of dual function materials, composed of Ru-Ni, Na2O/Al2O3 and Pt-Ni, Na2O/Al2O3, for CO2 capture and methanation by in-situ DRIFTS

Cited by 79 publications

References 35 publications

Storage Material Effects on the Performance of Ru-Based CO2 Capture and Methanation Dual Functioning Materials

Storage Material Effects on the Performance of Ru-Based CO2 Capture and Methanation Dual Functioning Materials

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Contact Info

Product

Resources

About

Storage Material Effects on the Performance of Ru-Based CO₂ Capture and Methanation Dual Functioning Materials

Storage Material Effects on the Performance of Ru-Based CO₂ Capture and Methanation Dual Functioning Materials