Plasma Catalytic Synthesis of Ammonia Using Functionalized-Carbon Coatings in an Atmospheric-Pressure Non-equilibrium Discharge

Hong, Jungmi; Aramesh, Morteza; Shimoni, Olga; Seo, Dong Han; Yick, Samuel; Greig, Amelia D.; Charles, Christine; Prawer, S.; Murphy, Anthony B.

doi:10.1007/s11090-016-9711-8

Cited by 82 publications

(105 citation statements)

References 47 publications

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“…under atmospheric dielectric barrier discharge conditions. [84] The plasma-surface interaction mechanisms proposed by Hong et al for non-equilibrium atmospheric-pressure N 2 -H 2 discharge demonstrated three additional plasma surface reaction schemes:i )adsorption,i i) surfaced iffusion, andi ii)desorption. Peng et al [82] and Zen et al [83] found that the combination of catalysis and absorption of ammonia on Mg-based catalyst could improve the overall synthesis efficiency by storing additional product inside the catalyst.…”

Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

“…In as tudy by Hong et al on generating ammonia using functionalized-carbon coatings, surfacea dsorption and recombination mechanisms weref ound between nitrogena nd surface-adsorbed hydroxyl groups. [84] The plasma-surface interaction mechanisms proposed by Hong et al for non-equilibrium atmospheric-pressure N 2 -H 2 discharge demonstrated three additional plasma surface reaction schemes:i )adsorption,i i) surfaced iffusion, andi ii)desorption. [67] In ap revious work on generating ammonia using functionalized carbon coatings, surface adsorption andr ecombination occurred between nitrogen and surface-adsorbed hydroxyl groups.…”

Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

“…Peng et al [82] and Zen et al [83] found that the combination of catalysis and absorption of ammonia on Mg-based catalyst could improve the overall synthesis efficiency by storing additional product inside the catalyst. [84] 3. Furthermore, the various morphologies of catalysts (wool, powder,p allets,e tc.)…”

Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

“…[67] In ap revious work on generating ammonia using functionalized carbon coatings, surface adsorption andr ecombination occurred between nitrogen and surface-adsorbed hydroxyl groups. [84] 3. Synergies in Gas-Liquid NTPNF…”

Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

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Sustainable Non‐Thermal Plasma‐Assisted Nitrogen Fixation—Synergistic Catalysis

et al. 2019

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In this Minireview, the multiple chemical synergies present in catalytic non‐thermal plasma‐assisted nitrogen fixation (NTPNF) are uncovered through a critical exploration of the underlying mechanisms, during which the catalyst, plasma, and reactants play different roles. For the gas‐phase NTPNF, the synergies consist of different aspects of the catalytic pathways such as electron‐impact dissociation; Zeldovich mechanism in the PNO interactions; and Eley–Rideal, Langmuir–Hinshelwood, surface adsorption, and diffusion mechanisms for the plasma–catalyst interactions. The synergies within the gas–liquid NTPNF involve contributions of plasma and UV excitation to the gas‐phase reactions and the UV excitation of molecules at the liquid–surface interface, which improves synthesis of aqueous nitrate, nitrite, and ammonium products. Based on the various synergistic mechanisms during NTPNF, future potential applications are proposed for how NTPNF could benefit the sustainable nitrogen fixation industry.

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Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

Section: Plasma-catalyst Interactionsmentioning

confidence: 99%

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Sustainable Non‐Thermal Plasma‐Assisted Nitrogen Fixation—Synergistic Catalysis

et al. 2019

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“…Plasma and plasma catalysis with dielectric barrier discharge (DBD) reactors have been widely utilized for a large variety of chemical processes, including the reforming of hydrocarbons [1][2][3], the abatement of contaminants [4][5][6], or the synthesis of ammonia [7][8][9]. There are two major shortcomings when dealing with DBD plasma reactions.…”

Section: Introductionmentioning

confidence: 99%

Isotope Labelling for Reaction Mechanism Analysis in DBD Plasma Processes

et al. 2019

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Dielectric barrier discharge (DBD) plasmas and plasma catalysis are becoming an alternative procedure to activate various gas phase reactions. A low-temperature and normal operating pressure are the main advantages of these processes, but a limited energy efficiency and little selectivity control hinder their practical implementation. In this work, we propose the use of isotope labelling to retrieve information about the intermediate reactions that may intervene during the DBD processes contributing to a decrease in their energy efficiency. The results are shown for the wet reforming reaction of methane, using D2O instead of H2O as reactant, and for the ammonia synthesis, using NH3/D2/N2 mixtures. In the two cases, it was found that a significant amount of outlet gas molecules, either reactants or products, have deuterium in their structure (e.g., HD for hydrogen, CDxHy for methane, or NDxHy for ammonia). From the analysis of the evolution of the labelled molecules as a function of power, useful information has been obtained about the exchange events of H by D atoms (or vice versa) between the plasma intermediate species. An evaluation of the number of these events revealed a significant progression with the plasma power, a tendency that is recognized to be detrimental for the energy efficiency of reactant to product transformation. The labelling technique is proposed as a useful approach for the analysis of plasma reaction mechanisms.

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Fundamental Properties and Applications of Dielectric Barrier Discharges in Plasma‐Catalytic Processes at Atmospheric Pressure

Ollegott

Wirth

Oberste‐Beulmann

et al. 2020

Chemie Ingenieur Technik

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The combination of a nonthermal plasma and a heterogeneous catalyst provides unique opportunities for chemical transformations. High densities of reactive species, such as ions, radicals or vibrationally excited molecules, are generated by electron collisions and initiate a multitude of chemical reactions in the gas phase. By shifting the reaction site from the gas phase to the surface of the catalyst, the selectivity of these reactions can be significantly enhanced. Dielectric barrier discharges (DBDs) are a promising plasma source for these kinds of applications due to their non‐equilibrium conditions and their simple construction. This review provides a brief introduction to the breakdown mechanism and the various geometries of DBDs and presents several plasma‐catalytic DBD applications.

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Plasma Catalytic Synthesis of Ammonia Using Functionalized-Carbon Coatings in an Atmospheric-Pressure Non-equilibrium Discharge

Cited by 82 publications

References 47 publications

Sustainable Non‐Thermal Plasma‐Assisted Nitrogen Fixation—Synergistic Catalysis

Sustainable Non‐Thermal Plasma‐Assisted Nitrogen Fixation—Synergistic Catalysis

Isotope Labelling for Reaction Mechanism Analysis in DBD Plasma Processes

Fundamental Properties and Applications of Dielectric Barrier Discharges in Plasma‐Catalytic Processes at Atmospheric Pressure

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