Effects of solar irradiation on thermally driven CO2 methanation using Ni/CeO2–based catalyst

Golovanova, Viktoria; Spadaro, Maria Chiara; Arbiol, Jordi; Golovanov, V.; Rantala, Tapio T.; Andreu, Teresa; Morante, J.R.

doi:10.1016/j.apcatb.2021.120038

Cited by 41 publications

(33 citation statements)

References 65 publications

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“…[21][22][23][24][25][26][27][28] However, due to the strong carcinogenicity of Cr 6 + , people are actively looking for more environmentally friendly alternatives, such as iron-based chromium-free catalysts, molybdenum-based catalysts, nickelbased catalysts, etc. [29,30] Supported nickel catalysts are commercially used for the methanation reaction [31][32][33][34][35][36][37][38][39][40] methane reforming reaction [41][42][43][44][45][46] and catalytic oxidation of methane ( [47] With properly controlled reaction conditions and precisely tailored catalyst structure, nickel also can catalyze both the LT-WGS and HT-WGS reactions with suppressed selectivity towards the CO methanation side reaction. [48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63] To date, there have been a few excellent reviews that cover many aspects of the nickel-based catalysts for the WGS reaction, including the effect of reaction conditions,…”

Section: Introductionmentioning

confidence: 99%

A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts

et al. 2022

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Recent advances in supported nickel catalysts for the water-gas shift (WGS) reaction are reviewed, focusing on the structuremechanism relationships. The WGS reaction can proceed via the redox, carboxyl, and formate pathways over the supported nickel catalysts. However, a discrepancy exists between the mechanism-level understanding and catalyst design principles in literature. In this review, we summarized the mechanismstructure relationship of nickel-based catalysts, emphasizing the effects of the formation of alloy, modification of the support or addition of alkali metal promoters on the CO adsorption and the H 2 O dissociation in the process of WGS reaction. Future research is suggested to systematically investigate the reaction mechanism & kinetics for different catalyst structures. In addition, the manipulation of strong metal-support interactions and the development of new types of supports are prospective directions.

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Section: Introductionmentioning

confidence: 99%

A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts

et al. 2022

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“…CdS is an excellent photocatalyst for diverse organic reactions due to a narrow band gap (band gap energy, E g = 2.4 eV) − whereas In 2 O 3 can be combined easily with sulfide semiconductors, especially CdS to improve the photoelectric properties and to adjust the band structure of semiconductors. , Moreover, the metallic Ni serving as active sites efficiently boosts hydrogenation reactions in both thermocatalysis − and photocatalysis. − Bearing the above in mind, we envisioned that the Ni-modified CdS–In 2 O 3 heterogeneous photocatalyst might effectively enable the chemoselective TH reaction of quinolines to tetrahydroquinolines, but, to the best of our knowledge, no report on this process can be found.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Cao

Sun

et al. 2021

ACS Catal.

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The pursuit of a powerful strategy to enable chemoselective transfer hydrogenation reaction of quinolines to their corresponding tetrahydroquinolines is of great significance, but it remains a challenge. Herein, we have realized heterogeneous photocatalytic chemoselective transfer hydrogenation reaction of quinolines to their corresponding tetrahydroquinolines over the developed hierarchical NiO/In2O3–CdS microspheres with high activity and selectivity under visible light irradiation and mild conditions, in which benzyl alcohol serves as a hydrogen donor to replace high-pressure flammable molecular hydrogen. More interestingly, the experimental and theoretical calculation results confirm that NiO acts as active sites for this photocatalytic transfer hydrogenation reaction, and it adsorbs and activates benzyl alcohol far more effectively than the metallic Ni. It breaks through the traditional concept that the metallic Ni serves as photocatalytically active sites for the effective activation of benzyl alcohol. This work not only presents an efficient strategy for the production of tetrahydroquinolines via heterogeneous photocatalytic chemoselective transfer hydrogenation reaction of quinolines but also paves a way for designing other heterogeneous photocatalytic systems toward chemoselective transfer hydrogenation reaction of diverse N-heterocycles.

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“…22 Although Ru-based DFMs show good catalytic activity, their scale-up applications have been restricted by the high cost and limited reserves. 17,19 Given this, Ni-MgO DFMs could be promising alternatives. However, Ni/MgO DFMs generally require high reduction temperatures (typically ∼650 °C) to ensure that the metallic Ni remains active for CO 2 methanation.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrogen from renewable energy sources is introduced to the CO 2 -saturated DFMs, causing CO 2 molecules to spill over to the catalyst site where they are converted to CH 4. The widely studied catalysts for CO 2 methanation reaction involves noble metal catalysts (Ru and Rh) and transition metal catalysts (Ni). ,− Among various alkali metal-based CO 2 adsorbents, MgO has been widely employed to fabricate DFM systems, considering that its operating temperature window for CO 2 capture (200–300 °C) and regeneration (350–450 °C) is well matched with that of CO 2 methanation. − …”

Section: Introductionmentioning

confidence: 99%

“…Ru-based DFMs show high activity and good stability toward CO 2 methanation. , Sun et al preloaded 10 wt % Ru on CeO 2 -MgO, and the DFMs exhibited good performance in CO 2 capture and in situ methanation with a high CH 4 yield of 3.36 mmol CH 4 /g DFMs under the isothermal condition of 300 °C . Although Ru-based DFMs show good catalytic activity, their scale-up applications have been restricted by the high cost and limited reserves. , Given this, Ni-MgO DFMs could be promising alternatives. However, Ni/MgO DFMs generally require high reduction temperatures (typically ∼650 °C) to ensure that the metallic Ni remains active for CO 2 methanation. ,− The harsh reduction conditions remain challenging for the scale-up application of Ni-MgO DFMs.…”

Section: Introductionmentioning

confidence: 99%

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Insights into Nickel-Based Dual Function Materials for CO₂ Sorption and Methanation: Effect of Reduction Temperature

et al. 2021

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Ni-MgO dual function materials (DFMs) show promise for integrated CO2 sorption and methanation. To improve CO2 sorption capacity, Ni-MgO DFMs are promoted with alkali metal nitrates. However, the high catalyst reduction temperature will result in high energy consumption, huge temperature gap between reduction (∼650 °C) and CO2 sorption and methanation (∼300 °C), and the loss of alkali metal nitrates. In this work, we prepared a Ni/CeO2 catalyst and investigated the effect of reduction temperature on its structure–property relationships in CO2 methanation, aiming to lower the reduction temperature to an isothermal level that matches CO2 methanation. Results indicated that the reduction temperature fell from over 650 to 300 °C, and Ni/CeO2 reduced at 300 °C featured high CO2 conversion (72.7%) and CH4 selectivity (98.9%). The CO2 methanation activity of Ni/CeO2 declined significantly when the reduction temperature exceeded 400 °C. The formation of more oxygen vacancy defects due to the interaction between NiO and CeO2 promoted the reduction of NiO species at lower temperatures. The declined CO2 methanation activity at high reduction temperatures was ascribed to the consumption of oxygen vacancies in catalyst reduction, and less defects were available for CO2 activation and methanation. An alkali metal nitrate promoted MgO adsorbent was physically mixed with Ni/CeO2 to construct (Li-Na-K)NO3-MgO-Ni/CeO2-phy DFMs for integrated CO2 sorption and methanation. The DFMs could be facilely reduced at 300 °C, and this has made it possible to realize the isothermal operation of catalyst reduction and CO2 sorption and methanation in integrated CO2 capture and utilization (ICCU). The (Li-Na-K)NO3-MgO-Ni/CeO2-phy DFMs reduced at 300 °C exhibited an impressive CO2 uptake of 2.74 mmol CO2/g DFMs and a great CH4 yield of 1.10 mmol CH4/g DFMs, and they could be a promising alternative to Ru-based DFMs with respect to their comparable CO2 sorption capacity and methanation activity and minimized cost of raw materials.

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Effects of solar irradiation on thermally driven CO2 methanation using Ni/CeO2–based catalyst

Cited by 41 publications

References 65 publications

A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts

A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Insights into Nickel-Based Dual Function Materials for CO₂ Sorption and Methanation: Effect of Reduction Temperature

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Effects of solar irradiation on thermally driven CO2 methanation using Ni/CeO2–based catalyst

Cited by 41 publications

References 65 publications

A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts

A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts

Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In2O3–CdS Microspheres

Insights into Nickel-Based Dual Function Materials for CO2 Sorption and Methanation: Effect of Reduction Temperature

Contact Info

Product

Resources

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Photocatalytic Chemoselective Transfer Hydrogenation of Quinolines to Tetrahydroquinolines on Hierarchical NiO/In₂O₃–CdS Microspheres

Insights into Nickel-Based Dual Function Materials for CO₂ Sorption and Methanation: Effect of Reduction Temperature