Techno-economic evaluation of solar-driven ceria thermochemical water-splitting for hydrogen production in a fluidized bed reactor

Onigbajumo, Adetunji; Swarnkar, Priyanka; Will, Geoffrey; Sundararajan, T.; Taghipour, Alireza; Couperthwaite, Sara J.; Steinberg, Ted; Rainey, Thomas J.

doi:10.1016/j.jclepro.2022.133303

Cited by 20 publications

(8 citation statements)

References 61 publications

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“…Onigbajumo et al [104] used an indirectly irradiated fluidized bed reactor containing ceria particles for thermochemical H 2 production via WS (Simulation study using Aspen Plus). This setup was also used to produce electricity via integrating with the O 2 coproduction and heat recovery units.…”

Section: Year 2022mentioning

confidence: 99%

Recent Developments in Ceria-Driven Solar Thermochemical Water and Carbon Dioxide Splitting Redox Cycle

Bhosale

2023

Energies

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Metal oxide (MO) based solar thermochemical H2O (WS) and CO2 splitting (CDS) is one of the most promising and potential-containing processes that can be used to produce H2 and syngas (liquid fuel precursor). Several non-volatile and volatile MOs were considered redox materials for the solar-driven WS and CDS operation. Among all the examined redox materials, based on their high O2 storage capacity, faster oxidation kinetics, and good stability, ceria and doped ceria materials are deemed to be one of the best alternatives for the operation of the thermochemical redox reactions associated with the WS and CDS. Pure ceria was used for solar fuel production for the first time in 2006. A review paper highlighting the work done on the ceria-based solar thermochemical redox WS and CDS cycle from 2006 until 2016 is already published elsewhere by the author. This review paper presents all the significant findings reported in applying pure ceria and doped ceria materials for the WS and CDS by research teams worldwide.

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Section: Year 2022mentioning

confidence: 99%

Recent Developments in Ceria-Driven Solar Thermochemical Water and Carbon Dioxide Splitting Redox Cycle

Bhosale

2023

Energies

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“…[1][2][3][4][5] To realize largescale hydrogen production and store intermittent solar energy, solar-driven thermochemical hydrogen (STCH) attracts considerable attention because it utilizes the full spectrum of solar energy through a two-step redox cycle. [6][7][8][9][10] (1) The rst step of the process involves the reduction of metal oxide under high temperatures (e.g., T > 1473 K) and low P O 2 (partial pressure of oxygen), resulting in the production of oxygen vacancies. (2) The second step involves oxidizing the metal oxide with steam at low temperatures (e.g., T < 1373 K) to produce hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Manganese-based A-site high-entropy perovskite oxide for solar thermochemical hydrogen production

Liu,

Zhang,

et al. 2024

J. Mater. Chem. A

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“…CeO 2 is also one of the most active and stable known oxides for thermochemical water splitting to H 2 and O 2 for energy applications [5]. For this reaction, however, the reduction is considered in the absence of a reducing agent and where heat (from the sun) is the sole energy input.…”

Section: Introductionmentioning

confidence: 99%

A Core and Valence-Level Spectroscopy Study of the Enhanced Reduction of CeO2 by Iron Substitution—Implications for the Thermal Water-Splitting Reaction

Idriss

2024

Inorganics

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The reduction of Ce cations in CeO2 can be enhanced by their partial substitution with Fe cations. The enhanced reduction of Ce cations results in a considerable increase in the reaction rates for the thermal water-splitting reaction when compared to CeO2 alone. This mixed oxide has a smaller crystallite size when compared to CeO2, in addition to a smaller lattice size. In this work, two Fe-substituted Ce oxides are studied (Ce0.95Fe0.05O2-δ and Ce0.75Fe0.25O2-δ; δ < 0.5) by core and valence level spectroscopy in their as-prepared and Ar-ion-sputtered states. Ar ion sputtering substantially increases Ce4f lines at about 1.5 eV below the Fermi level. In addition, it is found that the XPS Ce5p/O2s ratio is sensitive to the degree of reduction, most likely due to a higher charge transfer from the oxygen to Ce ions upon reduction. Quantitatively, it is also found that XPS Ce3d of the fraction of Ce3+ (uo, u′ and vo, v′) formed upon Ar ion sputtering and the ratio of Ce5p/O2s lines are higher for reduced Ce0.95Fe0.05O2-δ than for reduced Ce0.75Fe0.25O2-δ. XPS Fe2p showed, however, no preferential increase for Fe3+ reduction to Fe0 with increasing time for both oxides. Since water splitting was higher on Ce0.95Fe0.05O2-δ when compared to Ce0.75Fe0.25O2-δ, it is inferred that the reaction centers for the thermal water splitting to hydrogen are the reduced Ce cations and not the reduced Fe cations. These reduced Ce cations can be tracked by their XPS Ce5p/O2s ratio in addition to the common XPS Ce3d lines.

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Techno-economic evaluation of solar-driven ceria thermochemical water-splitting for hydrogen production in a fluidized bed reactor

Cited by 20 publications

References 61 publications

Recent Developments in Ceria-Driven Solar Thermochemical Water and Carbon Dioxide Splitting Redox Cycle

Recent Developments in Ceria-Driven Solar Thermochemical Water and Carbon Dioxide Splitting Redox Cycle

Manganese-based A-site high-entropy perovskite oxide for solar thermochemical hydrogen production

A Core and Valence-Level Spectroscopy Study of the Enhanced Reduction of CeO2 by Iron Substitution—Implications for the Thermal Water-Splitting Reaction

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