Control of strong electronic oxide-support interaction in iron-based redox catalysts for highly efficient chemical looping CO2 conversion

Ouyang, Tong; Jin, Bo; Mao, Yu; Wei, Ding; Liang, Zhiwu

doi:10.1016/j.apcatb.2023.123531

Cited by 9 publications

(4 citation statements)

References 67 publications

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“…The changes in reaction regimes throughout the reduction of iron ores can be explained considering that the true density of the different oxides decreases in the order Fe > Fe (1−y) O > Fe 2 O 3 > Fe 3 O 4 and that denser iron oxide forms imply slower diffusion [146][147][148][149].…”

Section: Effect Of Physical and Chemical Phenomena On The Reaction Ratementioning

confidence: 99%

Reduction of Iron Oxides for CO2 Capture Materials

Fabozzi,

Cerciello,

Senneca

2024

Energies

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The iron industry is the largest energy-consuming manufacturing sector in the world, emitting 4–5% of the total carbon dioxide (CO2). The development of iron-based systems for CO2 capture and storage could effectively contribute to reducing CO2 emissions. A wide set of different iron oxides, such as hematite (Fe2O3), magnetite (Fe3O4), and wüstite (Fe(1−y)O) could in fact be employed for CO2 capture at room temperature and pressure upon an investigation of their capturing properties. In order to achieve the most functional iron oxide form for CO2 capture, starting from Fe2O3, a reducing agent such as hydrogen (H2) or carbon monoxide (CO) can be employed. In this review, we present the state-of-the-art and recent advances on the different iron oxide materials employed, as well as on their reduction reactions with H2 and CO.

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Section: Effect Of Physical and Chemical Phenomena On The Reaction Ratementioning

confidence: 99%

Reduction of Iron Oxides for CO2 Capture Materials

Fabozzi,

Cerciello,

Senneca

2024

Energies

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“…The present global energy consumption is mainly based on the use of fossil fuels, which has contributed to many environmental problems. Renewable energy sources are considered attractive alternatives to replace fossil fuels because of their promising social, environmental, and economic benefits (Bilgen et al, 2004;Jin et al, 2023;Jin et al, 2024;Ouyang et al, 2024). The British Petroleum (BP) Company predicted that the consumption percentage of renewable energy sources will increase from 4% of its total primary energy consumption in 2016 to 14% in 2040 (British Petroleum Company, 2019).…”

Section: Introductionmentioning

confidence: 99%

Redox and melting characteristics of Mn-based ores for high-temperature thermochemical energy storage

Liu,

Xu,

Liu

2024

Front. Energy Res.

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Redox and melting characteristics of Mn-based ores were investigated to test their potential use in thermochemical energy storage (TCES). Two Mn-based materials (FJ and LY) were natural ores with the Mn content higher than 35 wt%, and one Mn-based material was prepared by adding an MgO–kaolin inert support into LY ores to increase its melting temperature. Cyclic reduction and oxidation reactivity of these Mn-based materials was studied via thermogravimetric analysis (TGA), and the melting behaviors of these materials were investigated by using a melting test setup with an optical camera–image system. It was found that the oxygen capacity of the FJ Mn ore can approach ∼1.50 wt%, while the LY Mn ore had only 0.42 wt%–0.69 wt% oxygen capacity The deformation temperature of the FJ Mn ore is higher than that of the LY Mn ore, and the melting temperatures of the LY Mn ore can be significantly improved with the addition of an MgO–kaolin inert support, while the reactivity is decreased due to the addition of the MgO–kaolin inert material. This study proves that manganese ores with high oxygen capacity and deformation temperature have potential as TCES materials. For some manganese ores with low deformation temperatures, it is necessary to improve their melting temperatures and ensure oxygen capacity for high-temperature TCES applications.

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“…Here, to enhance reactivity and overcome limitations of pure Febased oxygen carriers, the use of mixed or combined Fe-based oxygen carriers with other metal oxides, forming crystalline phases such as spinels or perovskites, has been proposed in literature. 9,17 A small number of these materials with the adequate properties for the CLDR process have been characterized, including layered double hydroxide derived Mg−Fe−Al−O oxygen carriers, 18 Fe 2 O 3 −ZrO 2 , 19 NiO−Fe 2 O 3 mixed oxides and synthetic NiFe 2 O 4 spinel, 20,21 29 and La 0.8 Sr 0.2 FeO 3 . 30 The authors claim that the process is very efficient in terms of CO yield, compared to normal dry reforming.…”

Section: Introductionmentioning

confidence: 99%

“…Some research has been done with respect to a similar process, called chemical looping dry reforming (CLDR), where methane is typically used as fuel in the FR, and the oxygen carrier is regenerated with CO 2 . Here, to enhance reactivity and overcome limitations of pure Fe-based oxygen carriers, the use of mixed or combined Fe-based oxygen carriers with other metal oxides, forming crystalline phases such as spinels or perovskites, has been proposed in literature. , A small number of these materials with the adequate properties for the CLDR process have been characterized, including layered double hydroxide derived Mg–Fe–Al–O oxygen carriers, Fe 2 O 3 –ZrO 2 , NiO–Fe 2 O 3 mixed oxides and synthetic NiFe 2 O 4 spinel, , Fe 2 O 3 –MgAl 2 O 4 , MnFe 2 O 4 , Cu 0.4 Co 0.6 Fe 2 O 4 , CeO 2 , doped CeO 2 , Fe 2 O 3 –NiO/La 0.8 Sr 0.2 FeO 3 , La 0.75 Sr 0.25 FeO 3 , BaFe 2 MAl 9 O 19 , and La 0.8 Sr 0.2 FeO 3 . The authors claim that the process is very efficient in terms of CO yield, compared to normal dry reforming.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Screening of Materials for the Chemical Looping CO₂ Splitting Process as a Pathway for Biokerosene Synthesis

García-Domínguez,

Cabello,

García-Labiano

et al. 2024

Energy Fuels

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The EU Green Deal aims to achieve climate neutrality by 2050. This means a transition from fossil fuels to renewable energy sources. In the aviation sector, this paradigm shift will require a long period of time so that one of the best shortterm options is the synthesis of biokerosene. However, the production of synthetic kerosene suffers currently from low efficiency and high costs. To reduce the cost and enhance the yield of this process, a promising option is Chemical Looping CO 2 Splitting technology, which converts CO 2 into CO, providing together with green H 2 the raw materials for the aviation biofuel production process chain through the Fischer−Tropsch synthesis.A key aspect for the deployment of chemical looping CO 2 splitting technology lies in developing suitable oxygen carriers. In this work, a preliminary screening of 18 Fe-based materials with a wide variety of supports (CaAl 2 O 4 , MgAl 2 O 4 , Zr-doped hydrotalcites, CaO, MgO, ZrO 2 , SiO 2 , and TiO 2 ) was carried out evaluating their physicochemical properties (mechanical resistance, reactivity and redox conversion) by means of crushing strength and thermogravimetric analysis tests. On the basis of these properties, the most promising oxygen carriers to be used in a Chemical Looping CO 2 Splitting system were selected. The best candidates were those prepared by the mechanical mixing method using Zr-doped synthetic hydrotalcite, ZrO 2 , Mg-doped ZrO 2 , SiO 2 /ZrO 2 (50:50), and Mg-doped TiO 2 as supports.

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Control of strong electronic oxide-support interaction in iron-based redox catalysts for highly efficient chemical looping CO2 conversion

Cited by 9 publications

References 67 publications

Reduction of Iron Oxides for CO2 Capture Materials

Reduction of Iron Oxides for CO2 Capture Materials

Redox and melting characteristics of Mn-based ores for high-temperature thermochemical energy storage

Preliminary Screening of Materials for the Chemical Looping CO₂ Splitting Process as a Pathway for Biokerosene Synthesis

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Control of strong electronic oxide-support interaction in iron-based redox catalysts for highly efficient chemical looping CO2 conversion

Cited by 9 publications

References 67 publications

Reduction of Iron Oxides for CO2 Capture Materials

Reduction of Iron Oxides for CO2 Capture Materials

Redox and melting characteristics of Mn-based ores for high-temperature thermochemical energy storage

Preliminary Screening of Materials for the Chemical Looping CO2 Splitting Process as a Pathway for Biokerosene Synthesis

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Preliminary Screening of Materials for the Chemical Looping CO₂ Splitting Process as a Pathway for Biokerosene Synthesis