Co3O4 nanoparticles as oxygen carriers for chemical looping combustion: A materials characterization approach to understanding oxygen carrier performance

Alalwan, Hayder A.; Cwiertny, David M.; Grassian, Vicki H.

doi:10.1016/j.cej.2017.02.134

Cited by 71 publications

(35 citation statements)

References 37 publications

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“…Meanwhile iron oxides, despite their low price and environmental safety, do not exhibit desirable CLOU properties. They are also tending to agglomeration when reacted in high temperatures [4,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Extremely Stable and Durable Mixed Fe–Mn Oxides Supported on ZrO2 for Practical Utilization in CLOU and CLC Processes

Ksepko

Lysowski

2021

Catalysts

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This paper contains the results of research on a promising combustion technology known as chemical looping combustion (CLC) and chemical looping with oxygen uncoupling (CLOU). The remarkable advantages of CLC are, among others, that concentrated CO2 stream can be obtained after water condensation without any energy penalty for its separation or significant decrease of NOx emissions. The objective of this work was to prepare a novel bi-metallic Fe–Mn supported on ZrO2 oxygen carriers. Performance of these carriers for the CLOU and CLC process with nitrogen/air and hard coal/air was evaluated. One-cycle CLC tests were conducted with supported Fe–Mn oxygen carriers in thermogravimetric analyzer utilizing hard coal as a fuel. The effects of the oxygen carrier chemical composition and process temperature on the reaction rates were determined. Our study proved that for CLOU, properties formation of bixbyite and spinel forms are responsible. Among iron ferrites, we concluded that iron-rich compounds such as Fe2MnO4 over FeMn2O4 spinel type oxides are more effective for CLOU applications.

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Section: Introductionmentioning

confidence: 99%

Extremely Stable and Durable Mixed Fe–Mn Oxides Supported on ZrO2 for Practical Utilization in CLOU and CLC Processes

Ksepko

Lysowski

2021

Catalysts

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“…We considered a diverse set of 10 materials with experimental reaction conversions of methane > 90% and 7 materials that demonstrate low or no conversion of methane, such as support materials (Table S5). [23,62,70,[72][73][74][75][76][77][78] We used the aerobic combustion of methane as the net reaction for this benchmarking study, where the oxidation and reduction reactions for this process are shown in Equations 5 and 6, respectively, and the net reaction is shown in Equation 7. Oxygen carriers (OCs) are active materials for CLC, where OCox/OCred is equivalent to MAox/MAred and Equations 5-7 are the CLC analogs of Equations 1-3.…”

Section: Benchmarking With Chemical Looping Combustionmentioning

confidence: 99%

High‐Throughput Analysis of Materials for Chemical Looping Processes

Singstock

Bartel

Holder

et al. 2020

Advanced Energy Materials

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Chemical looping is a promising approach for improving the energy efficiency of many industrial chemical processes. However, a major limitation of modern chemical looping technologies is the lack of suitable active materials to mediate the involved subreactions. Identification of suitable materials has been historically limited by the scarcity of high-temperature (> 600 °C) thermochemical data to evaluate candidate materials. An accurate thermodynamic approach is demonstrated here to rapidly identify active materials which is applicable to a wide variety of chemical looping chemistries. Application of this analysis to chemical looping combustion correctly classifies 17/17 experimentally studied redox materials by their viability and identifies over 1,300 promising yet previously unstudied active materials. This approach is further demonstrated by analyzing redox pairs for mediating a novel chemical looping process for producing pure SO2 from raw sulfur and air which could provide a more efficient and lower emission route to sulfuric acid. 12 promising redox materials for this process are identified, two of which are supported by previous experimental studies of their individual oxidation and reduction reactions. This approach provides the necessary foundation for connecting process design with high-throughput materials discovery to accelerate the innovation and development of a wide-range of chemical looping technologies.

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“…Challenges associated with the use of OC of nanosize are their particle stability at higher temperature and their decrement in reactivity over long hour of operation. Alalwan et al (2017) investigated CLC process by using nanosized Co 3 O 4 particles as OC found that at high temperature alone cause severe sintering and coalescence of nanoparticles. Therefore the challenge with nanoparticle is its stability at high temperature operation.…”

Section: Nanoparticle-based Oxygen Carriermentioning

confidence: 99%

Chemical looping combustion with nanosize oxygen carrier: a review

Akram

Sanjay

Hassan

2020

Int. J. Environ. Sci. Technol.

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This paper reports latest advancement on oxygen carriers (OCs) and effect of particle size from micro-to nanoscale in chemical looping combustion (CLC). CLC is basically a carbon capture and storage technology with the objective to reduce carbon dioxide emission from fossil fuel-based power plants, and it has the potential to reduce the global warming. Attention has been drawn toward utilization of nanosize-based oxygen carrier for bulk application. CLC is a novel technology for combustion of fossil fuels that avoids dilution of carbon dioxide (CO 2 ) with flue gases. Performance of CLC system depends upon redox reactivity and stability of oxygen carrier particles at high operating temperature. Oxides of metals like nickel, iron, copper, and mixed metals have also been discussed. Tendency of discussed nano-OC to agglomerate and stability at high temperature can be addressed by the use of suitable inert support materials. Reactivity of oxygen carrier increases with decreasing particle sizes from micro-to nanosize. Recent developments in nanosized oxygen carriers can be exploited for application. The challenges associated with nanosize oxygen carriers are stabilization and agglomeration at temperature above 600 °C. Different techniques have been proposed and investigated to overcome challenges. Various metal/metal oxide pair has been evaluated for its oxygen bearing capacity, stability, and resistance to agglomeration. Stability and agglomeration of nanosize oxygen carrier at temperature above 700 °C is an open issue.

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Co3O4 nanoparticles as oxygen carriers for chemical looping combustion: A materials characterization approach to understanding oxygen carrier performance

Cited by 71 publications

References 37 publications

Extremely Stable and Durable Mixed Fe–Mn Oxides Supported on ZrO2 for Practical Utilization in CLOU and CLC Processes

Extremely Stable and Durable Mixed Fe–Mn Oxides Supported on ZrO2 for Practical Utilization in CLOU and CLC Processes

High‐Throughput Analysis of Materials for Chemical Looping Processes

Chemical looping combustion with nanosize oxygen carrier: a review

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