CO<sub>2</sub>conversion by plasma: how to get efficient CO<sub>2</sub>conversion and high energy efficiency

Yin, Yuan‐Qi; Li, Zhikai; Devid, Edwin J.; Auerbach, Daniel J.; Kleyn, Aart W.

doi:10.1039/d0cp05275b

Cited by 29 publications

(25 citation statements)

References 76 publications

(115 reference statements)

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“…Consequently, the plasma torch in the current study can be assumed to have a gas temperature above 6000 K in the hot plasma zone, and thermal dissociation of CO 2 has therefore to be considered. According to Yin et al [40], for such temperatures the plasma can be considered to be thermal. Fridman reported that if a plasma is in a thermodynamic quasi-equilibrium, it can be viewed as a heat source.…”

Section: Resultsmentioning

confidence: 99%

Determination of the Conversion and Efficiency for CO₂ in an Atmospheric Pressure Microwave Plasma Torch

Wiegers

Schulz

Walker

et al. 2022

Chemie Ingenieur Technik

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In a 2.45 GHz plasma torch, carbon dioxide (CO2) has been converted into carbon monoxide (CO) and oxygen (O2) at atmospheric pressure. The conversion and the efficiency of the plasma have been determined using two independent measuring methods: mass spectrometry and Fourier transform infrared absorption spectroscopy. The conversion depends on the measurement position in the exhaust gas duct. The conversion values at the beginning of the exhaust gas duct are significantly higher (maximum conversion is 22 %) than in the thermalized state at the end of the duct. In the cold, thermalized state of the gas, the maximum conversion rate is 8 % at 1.5 eV molecule−1. The maximum efficiency of 25 % is achieved at approximatively 0.6 eV molecule−1 operating at a microwave power of 0.48 kW and a mass flow of 12 slm CO2.

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Section: Resultsmentioning

confidence: 99%

Determination of the Conversion and Efficiency for CO₂ in an Atmospheric Pressure Microwave Plasma Torch

Wiegers

Schulz

Walker

et al. 2022

Chemie Ingenieur Technik

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“…CO 2 dissociation can be triggered by different factors, either electronic excitation, vibrational excitation, or splitting by pyrolysis at high temperatures. CO 2 conversion increases with temperature, being negligible under 2000 K and reaching 100% at around 4500 K. 351 Oxygen atoms either tend to recombine into O 2 molecules, or stay in their atomic state, this second alternative becoming more prevalent as temperature increases.…”

Section: Plasma-assisted Conversionmentioning

confidence: 99%

“…By using this technology, a remarkable 70% energy efficiency could be achieved, with a CO 2 conversion reaching a staggering 95%. 351 By mixing CO 2 with other reactants, it is also possible to obtain different products. For example, hydrogenation reactions and dry reforming with methane have been explored 352,354,355 (reactions given in §3).…”

Section: Plasma-assisted Conversionmentioning

confidence: 99%

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

Olivier

Desgagnés

Mercier

et al. 2023

Ind. Eng. Chem. Res.

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Carbon capture is an emerging technology that is often mentioned as a potential solution to the global warming crisis. However, most of the captured carbon is now treated as waste, discarded, and not used in any meaningful way. On the other hand, from a sustainable development point of view, CO 2 valorization could be a very appealing approach that offers an economic potential when this compound is recycled into valuable chemical products. In this regard, this state-of-the-art review encompasses a wide range of different processes to achieve the conversion of CO 2 into a large variety of products. It does not focus solely on a specific reaction or method, but rather brings different aspects together to provide a far more complete portrait of this emerging subject. Several methods and approaches are discussed, namely thermochemical, electrochemical, photochemical, photoelectrochemical, biochemical, and plasma-assisted conversion. The current state of CO 2 valorization, as well as emerging alternatives and stimulating prospects, was examined, while bearing in mind the realities that limit the application of such technologies. Special emphasis was placed on the optimization of reaction conditions and the development of materials that ensure the best possible production of valuable and environmentally friendly compounds from CO 2 . This review also highlights the challenges related to the application of CO 2 valorization at an industrial scale, which are also important in directing further research in this domain and assessing the prospects of these technologies. Due to the growing number of published papers on the subject, and the limited number of papers offering such a large perspective, we thus believe that this review will be a valuable addition to guide all researchers involved in the field of CO 2 valorization, but also for industrial and political leaders interested in investing in and developing these promising new technologies.

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“…[9] Research on CO 2 conversion using plasma reaction includes CO 2 splitting, CO 2 reforming of CH 4 , CO 2 hydrogenation into CH 4 or carbon monoxide (CO), and others. [10][11][12][13][14] The combination of plasma with a catalyst in single-stage, namely in-plasma catalysis (IPC), has been often used to achieve higher conversion than thermal catalysis or plasma alone. [12] Dielectric barrier discharge (DBD) is the most suitable for IPC and is frequently adopted.…”

Section: Introductionmentioning

confidence: 99%

Real‐time measurement of axial temperature in a coaxial dielectric barrier discharge reactor and synergistic effect evaluation for in‐plasma catalytic CO₂ reduction

Wang

et al. 2022

Plasma Processes & Polymers

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Due to serious difficulty in the measurement of catalyst-bed temperature (T b ) for in-plasma catalysis (IPC), the evaluation of the IPC synergistic effect is still disputed. Herein, we reported a real-time measurement of axial temperature (T ax ), which is much closer to T b than wall temperature (T w ), using a thermocouple in a catalyst-packed coaxial dielectric barrier discharge reactor for the first time. In plasma catalytic CO 2 reduction, the effects of discharge power and flow rate on T ax , T w , and CO 2 conversion were examined. On the basis of T ax , compared with the thermal catalytic case, the plasma catalytic case only shows a weak synergistic effect. It was confirmed that the synergistic effect is overestimated if based on T w (except for the heatinsulated or quasi-adiabatic reactors).

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CO₂conversion by plasma: how to get efficient CO₂conversion and high energy efficiency

Abstract: Plasma technology, combined with activation on surfaces, is a novel way to convert CO2 using green electricity.

Cited by 29 publications

References 76 publications

Determination of the Conversion and Efficiency for CO₂ in an Atmospheric Pressure Microwave Plasma Torch

Determination of the Conversion and Efficiency for CO₂ in an Atmospheric Pressure Microwave Plasma Torch

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

Real‐time measurement of axial temperature in a coaxial dielectric barrier discharge reactor and synergistic effect evaluation for in‐plasma catalytic CO₂ reduction

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CO2conversion by plasma: how to get efficient CO2conversion and high energy efficiency

Abstract: Plasma technology, combined with activation on surfaces, is a novel way to convert CO2 using green electricity.

Cited by 29 publications

References 76 publications

Determination of the Conversion and Efficiency for CO2 in an Atmospheric Pressure Microwave Plasma Torch

Determination of the Conversion and Efficiency for CO2 in an Atmospheric Pressure Microwave Plasma Torch

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

Real‐time measurement of axial temperature in a coaxial dielectric barrier discharge reactor and synergistic effect evaluation for in‐plasma catalytic CO2 reduction

Contact Info

Product

Resources

About

CO₂conversion by plasma: how to get efficient CO₂conversion and high energy efficiency

Determination of the Conversion and Efficiency for CO₂ in an Atmospheric Pressure Microwave Plasma Torch

Determination of the Conversion and Efficiency for CO₂ in an Atmospheric Pressure Microwave Plasma Torch

Real‐time measurement of axial temperature in a coaxial dielectric barrier discharge reactor and synergistic effect evaluation for in‐plasma catalytic CO₂ reduction