An overview of CO<sub>2</sub>conversion in a microwave discharge: the role of plasma-catalysis

Chen, Guoxing; Britun, Nikolay; Godfroid, Thomas; Georgieva, Violeta; Snyders, Rony; Delplancke‐Ogletree, Marie‐Paule

doi:10.1088/1361-6463/aa5616

Cited by 77 publications

(61 citation statements)

References 47 publications

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“…A relatively small number of experiments were performed until the 1980's when there was a rapidly increasing number of reports motivated by the potential of plasma-catalysis to provide an efficient and sustainable process for a range of environmental, chemical and energy-related processes [4]. Recent review articles on plasma-catalysis will give a flavour of the range and nature of current research [1,[5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Plasma-catalysis: Is it just a question of scale?

Whitehead

2019

Front. Chem. Sci. Eng.

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The issues of describing and understanding the changes in performance that result when a catalyst is placed into plasma are discussed. The different chemical and physical interactions that result and how their combination might produce beneficial results for the plasma-catalytic processing of different gas streams are outlined with particular emphasis being placed on the different range of spatial and temporal scales that must be considered both in experiment and modelling. The focus is on non-thermal plasma where the lack of thermal equilibrium creates a range of temperature scales that must be considered. This contributes in part to a wide range of inhomogeneity in different properties such as species concentrations and electric fields that must be determined experimentally by in situ methods and be incorporated into modelling. It is concluded that plasmacatalysis is best regarded as conventional catalysis perturbed by the presence of a discharge, which modifies its operating conditions, properties and outcomes often in a very localised way. The sometimes used description "plasma-activated catalysis" is an apt one.

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Section: Introductionmentioning

confidence: 99%

Plasma-catalysis: Is it just a question of scale?

Whitehead

2019

Front. Chem. Sci. Eng.

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“…In relation to microwave plasmas, Chen et al reported that placing a NiO/ TiO 2 catalyst in the downstream of a low-pressure microwave plasma significantly increased the CO 2 conversion efficiency and energy efficiency [25,28]. They concluded that the oxygen vacancies provide the sites for adsorption of oxygen atoms from CO 2 .…”

Section: Mw Regionmentioning

confidence: 99%

Progress in Plasma-Assisted Catalysis for Carbon Dioxide Reduction

Chen¹,

Snyders²

2018

Plasma Chemistry and Gas Conversion

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Production of chemicals and fuels based on CO 2 conversion is attracting a special attention nowadays, especially regarding the fast depletion of fossil resources and increase of CO 2 emissions into the Earth's atmosphere. Recently, plasma technology has gained increasing interest as a non-equilibrium medium suitable for CO 2 conversion, which provides a promising alternative to the conventional pathway for greenhouse gas conversion. The combination of plasma and catalysis is of great interest for turning plasma chemistry in applications related to pollution and energy issues. In this chapter a short review of the current progress in plasmaassisted catalytic processes for CO 2 reduction is given. The most widely used discharges for CO 2 conversion are presented and briefly discussed, illustrating how to achieve a better energy and conversion efficiency. The chapter includes the recent status and advances of the most promising candidates (plasma catalysis) to obtain efficient CO 2 conversion, along with the future outlook of this plasma-assisted catalytic process for further improvement. Plasma Chemistry and Gas Conversion dBiochemical CO 2 conversion requires very energy-intensive post-reaction separation and processing steps. e The need for post-reaction separation for plasma technology highly depends on the process. Plasma Chemistry and Gas Conversion 12

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“…Motivated by the previously mentioned strategy, numerous research groups are currently focused on achieving the maximum conversion and energy efficiencies (defined in the following chapters) associated to the CO 2 decomposition via modeling [10,11] as well as through the experimental studies [12][13][14][15]. In addition to the plasma itself, utilization of the pre-activated highly porous catalyst may also significantly increase the energy efficiency of the conversion process, as shown in the numerous literature sources [16,17] and demonstrated in this book.…”

Section: How Does It Work?mentioning

confidence: 99%