Carbon dioxide dissociation in non-thermal radiofrequency and microwave plasma

Huang, Qiang; Zhang, Diyu; Wang, Dongping; Liu, Kezhao; Kleyn, Aart W.

doi:10.1088/1361-6463/aa754e

Cited by 49 publications

(52 citation statements)

References 41 publications

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“…This makes CO2 splitting on an industrial scale through RF-ICP viable [4]. In fact, such efficiencies are not quite reached at about 2.45 GHz, using microwave excitation [34]. The conversion of CO2 into CO can be further increased with 5%-8% by performing a pretreatment step prior of the start of CO2 splitting by RF-ICP ( see FIG.…”

Section: Resultsmentioning

confidence: 99%

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Conversion of CO2 by non- thermal inductively-coupled plasma catalysis

Devid

Ronda‐Lloret

Huang

et al. 2020

Chinese Journal of Chemical Physics

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CO2 decomposition is a very strongly endothermic reaction where very high temperatures are required to thermally dissociate CO2. Radio frequency inductively-coupled plasma enables to selectively activate and dissociate CO2 at room temperature. Tuning the flow rate and the frequency of the radio frequency inductively-coupled plasma gives high yields of CO under mild conditions. Finally the discovery of a plasma catalytic effect has been demonstrated for CO2 dissociation that shows a significant increase of the CO yield by metallic meshes. The metallic meshes become catalyst under exposure to plasma to activate the recombination reaction of atomic O to yield O2, thereby is reducing the reaction to convert CO back to CO2. Inductively-coupled hybrid plasma catalysis allows access to study and to utilize high CO2 conversion in a non-thermal plasma regime. This advance offers opportunities to investigate the possibility to use radio frequency inductively-coupled plasma to store superfluous renewable electricity into high-valuable CO in times where the price of renewable electricity is plunging.

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Section: Resultsmentioning

confidence: 99%

“…In their case the addition of a catalyst decreased the CO yield. Previously work from Spencer et al [32,34] showed that CO2 splitting via 13.56 MHz RF power source can reach CO2 conversions of 90% at 15 sccm CO2 and 1000 W (i.e. > 1000 eV/mol).…”

Section: Introductionmentioning

confidence: 99%

Conversion of CO2 by non- thermal inductively-coupled plasma catalysis

Devid

Ronda‐Lloret

Huang

et al. 2020

Chinese Journal of Chemical Physics

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“…Therefore, in several microwave plasma reactors used for CO 2 dissociation, ignition, and stabilization of the plasma is a main operational issue. Some investigations have relied on the use of an inert gas with low ionization energy, such as argon, to help ignite and stabilize the plasma, particularly when operating at high pressures . However, the microwave plasma reactor developed in this work is able to operate in a stable manner with undiluted CO 2 at high‐pressure conditions thanks to the electromagnetic wave confinement and stabilization by vorticial gas inflow.…”

Section: Gas‐phase Chemical Synthesismentioning

confidence: 99%

Design and characterization of an electromagnetic‐resonant cavity microwave plasma reactor for atmospheric pressure carbon dioxide decomposition

Mohsenian

Sheth

Bhatta

et al. 2018

Plasma Processes & Polymers

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Plasma processes are ideally suited for the conversion of renewable electricity into gas‐phase reactivity, such as for the decomposition of carbon dioxide (CO2). The design, development, and characterization of a microwave plasma reactor for atmospheric pressure undiluted carbon dioxide decomposition are presented. The reactor operates as an electromagnetic‐resonant cavity in which the generated plasma forms a bulb attached to a converging‐diverging nozzle and stabilized by streams of tangentially injected processing gas. Electromagnetic wave confinement, residence time, and critical gas vorticity constitute fundamental reactor sizing and operation parameters. Experimental results show that flow rate plays a dual role in plasma stabilization and process performance, whereas deposited power has a minor role in CO2 decomposition.

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“…Huang et al [16] studied energy efficiency of carbon dioxide dissociation in inductively coupled radiofrequency plasma and microwave plasma at low gas pressure. They related the energy efficiency of these processes to the selectivity by which energy transfer from LTP to molecular CO 2 dissociation reaction channels can enable ladder climbing of the carbon dioxide molecular vibrations.…”

Section: Ultra-high Selectivity In Materials Processing: Atomic Layermentioning

confidence: 99%