Magnesioferrites for solar thermochemical fuel production

Randhir, Kelvin; Rhodes, Nathan R.; Li, Like; AuYeung, Nick; Hahn, David W.; Mei, Renwei; Klausner, James F.

doi:10.1016/j.solener.2017.12.006

Cited by 18 publications

(11 citation statements)

References 65 publications

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“…Today industrial-scale hydrogen (which is also the precursor to ammonia synthesis via the Haber-Bosch process) is produced via steam methane reforming (SMR), which emits a sizable amount of CO 2 . Further work is required to drive down the cost of zero-emission hydrogen, whether through hydrogen synthesis from methane with carbon capture, 32 thermally driven synthesis, 33,34 or electrolysis. 35 The development of direct electrosynthesis of ammonia offers a promising path for modular, distributed ammonia production, 36 and recent work funded by ARPA-E's REFUEL program has focused on technology to enable the cost-effective electrosynthesis of ammonia and synthetic hydrocarbons, 37 which are discussed in the next section.…”

Section: Hydrogen and Ammoniamentioning

confidence: 99%

To decarbonize industry, we must decarbonize heat

Thiel

Stark

2021

Joule

152

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Industry is often termed ''hard to decarbonize'' because a vast, inhomogeneous array of processes comprise the sector. But developing new, decarbonized process heating technologies represents a single, broadly applicable pathway to eliminating a large portion of sectoral emissions-and approximately one-fifth of global CO 2 emissions, overall. We begin this perspective with a brief review of the demand for and cost of industrial heat. Then, we highlight key challenges and R&D needs in developing zero-carbon industrial heating technologies. Technologies in four pathways are discussed:(1) zero-carbon fuels, (2) zero-carbon heat sources, (3) electrification of heat, and (4) better heat management. Finally, we identify crosscutting challenges to the development and adoption of zero-carbon industrial heat technologies, the solution to any of which would constitute a significant breakthrough on the path to industrial decarbonization.

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Section: Hydrogen and Ammoniamentioning

confidence: 99%

To decarbonize industry, we must decarbonize heat

Thiel

Stark

2021

Joule

152

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“…[4][5][6][7][8][9] Fuel production from H 2 O and CO 2 is possible if redox reactions (reduction and oxidation chemical reactions) are utilized with metal oxides (MOs). A variety of reactive systems have been studied in the past, including nonvolatile MOs such as Fe3O4/FeO/Fe, [10][11][12] ferrites, [13][14][15][16][17] ceria [18][19][20] doped ceria, [21][22][23][24][25][26] and perovskites. [27][28][29][30][31][32][33] In addition to the nonvolatile MOs, volatile MO-based redox systems such as ZnO/Zn and SnO 2 /SnO showed tremendous potential towards solar thermochemical production of fuel.…”

Section: Introductionmentioning

confidence: 99%

SnO ₂ / SnO based redox thermochemical CO ₂ splitting cycle: Effect of inert gas flowrate, reduction temperature, and gas separation on the solar‐to‐fuel energy conversion efficiency

Bhosale

Shende

Gupta

2022

Intl J of Energy Research

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This paper reports the thermodynamic efficiency analysis of the SnO 2 /SnO redox cycle conducted using the HSC Chemistry software. A theoretical process model is developed and used, including reduction and oxidation cells, heaters, separators, and an ideal CO/O 2 fuel cell. The thermodynamic calculations are performed by varying the reduction temperature (T red ) from 1500 to 2000 K, assuming a steady gas-to-gas heat recovery effectiveness (ε gg ) equal to

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“…In addition to the ferrites mentioned above, Mg‐based ferrites are also investigated for WS and CDS applications in recent years. Thermochemical conversion of H 2 O into H 2 using the redox reactions associated with the MgFe 2 O 4 and MgO was examined 27 . MgFe 2 O 4 /MgO mixture showed an elevated level of H 2 production at temperatures lower than that of ceria.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle

Bhosale

Rashid

2021

Intl J of Energy Research

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Summary The solar‐to‐fuel energy conversion efficiency (0.25emηsolar−to−fuel) of the MgxFe3‐xO4 (x = 0.2‐1.0) based CO2 splitting (CDS) cycle is estimated at steady reduction (Tred) and oxidation temperatures (Toxd) equal to 1673 K and 1273 K, respectively. The efficiency analysis is performed using the experimental results reported in the sol‐gel‐derived MgxFe3‐xO4 based CDS cycle. The redox nonstoichiometry allied with the MgxFe3‐xO4 during the reduction (δred) and oxidation steps (δoxd) is determined based on the experimentally obtained results. Efficiency analysis is conducted by considering the heat energy required to heat inert sweep gas and CO2. Heat penalty allied with the separation of the inert sweep gas from O2 and CO2 from CO is also considered. The solid‐to‐solid heat recovery effectiveness (εss) is assumed to be zero, whereas the gas‐to‐gas heat recovery effectiveness (εgg) kept steady at 0.5. The release of a high amount of O2 and the production of an elevated CO level is responsible for the rise in the energy penalty associated with both separators. The obtained results also indicate that the total thermal energy required (Q̇MgF−TC) to drive the cycle depends heavily on the sensible heat required (Q̇MgF−sens) for raising the temperature of MgxFe3‐xO4 from Toxd to Tred. The obtained results also show that 0.25emηsolar−to−fuel depends heavily on the amount of CO produced and hence recorded to be the highest (4.3%) in the case of MgFe2O4.

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Magnesioferrites for solar thermochemical fuel production

Cited by 18 publications

References 65 publications

To decarbonize industry, we must decarbonize heat

To decarbonize industry, we must decarbonize heat

SnO ₂ / SnO based redox thermochemical CO ₂ splitting cycle: Effect of inert gas flowrate, reduction temperature, and gas separation on the solar‐to‐fuel energy conversion efficiency

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle

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Magnesioferrites for solar thermochemical fuel production

Cited by 18 publications

References 65 publications

To decarbonize industry, we must decarbonize heat

To decarbonize industry, we must decarbonize heat

SnO 2 / SnO based redox thermochemical CO 2 splitting cycle: Effect of inert gas flowrate, reduction temperature, and gas separation on the solar‐to‐fuel energy conversion efficiency

Thermodynamic analysis of Mg x Fe 3‐x O 4 redox CO 2 conversion solar thermochemical cycle

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Product

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About

SnO ₂ / SnO based redox thermochemical CO ₂ splitting cycle: Effect of inert gas flowrate, reduction temperature, and gas separation on the solar‐to‐fuel energy conversion efficiency

Thermodynamic analysis of Mg _x Fe _3‐x O ₄ redox CO ₂ conversion solar thermochemical cycle