Plasma-Catalytic Ammonia Synthesis in a DBD Plasma: Role of Microdischarges and Their Afterglows

2020 ◽  
Vol 124 (42) ◽  
pp. 22871-22883
Author(s):  
K. van ‘t Veer ◽  
Y. Engelmann ◽  
F. Reniers ◽  
A. Bogaerts
Keyword(s):  
Ammonia Synthesis ◽  
Dbd Plasma ◽  
Catalytic Ammonia Synthesis

scholarly journals The role of heterogeneous catalysts in the plasma-catalytic ammonia synthesis

2021 ◽  
Vol 362 ◽  
pp. 2-10 ◽  
Author(s):  
Bhaskar S. Patil ◽  
Nikolay Cherkasov ◽  
Nadadur Veeraraghavan Srinath ◽  
Juergen Lang ◽  
Alex O. Ibhadon ◽  
...  
Keyword(s):  
Heterogeneous Catalysts ◽  
Ammonia Synthesis ◽  
Catalytic Ammonia Synthesis

scholarly journals Microwave-enhanced catalytic ammonia synthesis under moderate pressure and temperature

2021 ◽  
pp. 106344
Author(s):  
Yuxin Wang ◽  
Tuhin S. Khan ◽  
Christina Wildfire ◽  
Dushyant Shekhawat ◽  
Jianli Hu
Keyword(s):  
Ammonia Synthesis ◽  
Moderate Pressure ◽  
Catalytic Ammonia Synthesis

DBD plasma reactor for oxidative decomposition of Chlorobenzene

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
L. Sivachandiran ◽  
J. Karuppiah ◽  
Ch. Subrahmanyam
Keyword(s):  
Barrier Discharge ◽  
Copper Wire ◽  
Plasma Reactor ◽  
Aluminum Foil ◽  
Low Flow ◽  
Dbd Plasma ◽  
Silver Paste ◽  
Oxidative Decomposition ◽  
Gaseous Products

Abstract Oxidative decomposition of chlorobenzene diluted in air was carried out in a dielectric barrier discharge reactor. In order to understand the role of the ground electrode, various reactor configurations were tested. Among silver paste, copper wire and aluminum foil tested as the outer electrodes, typical results indicated the best performance of silver paste, probably due to uniform distribution of microdischarges. Likewise, low flow rates gave better conversion and selectivity to gaseous products.

scholarly journals Enhancement the Sensitivity of waveguide Coated ZnO thin films: Role of Plasma Irradiation

2020 ◽  
Vol sceeer (3d) ◽  
pp. 93-98
Author(s):  
Marwan Younus ◽  
Muayad Ahmed ◽  
Ghazwan Ali
Keyword(s):  
Thin Films ◽  
Glucose Solution ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Dielectric Barrier Discharge Plasma ◽  
Dbd Plasma ◽  
Plasma Irradiation ◽  
Before And After ◽  
Barrier Discharge Plasma

In this study, Dielectric Barrier Discharge plasma irradiation (DBD) is applied to treatment and improve the properties of the ZnO thin film deposited on the glass substrate as a sensor for glucose detection. The ZnO is prepared via a sol-gel method in this work. ZnO is irradiated by the DBD high voltage plasma to improve of its sensitivity. The optical properties, roughness and surface morphology of the waveguide coated ZnO thin films before and after DBD plasma irradiation are studied in this work. The results showed a significant improvement in the performance of the sensor in the detection of concentrations of glucose solution after plasma irradiation. Where the largest value in sensitivity was equal to 62.7 when the distance between electrodes was 5 cm compared to the sensitivity before irradiation, which was equal to 92. The high response showed in results demonstrating that the fabricated waveguide coated ZnO after plasma irradiation has the excellent potential application as a sensor to detect small concentration of glucose solution.

scholarly journals Plasma Catalytic Conversion of CH4 to Alkanes, Olefins and H2 in a Packed Bed DBD Reactor

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 774
Author(s):  
Mohammadreza Taheraslani ◽  
Han Gardeniers
Keyword(s):  
Barrier Discharge ◽  
Plasma Reactor ◽  
Packed Bed ◽  
Reaction Pathways ◽  
Ambient Conditions ◽  
Alumina Catalyst ◽  
Dbd Plasma ◽  
Hydrogenation Reactions ◽  
Notable Increase

Methane is activated at ambient conditions in a dielectric barrier discharge (DBD) plasma reactor packed with Pd/γ-alumina catalyst containing different loadings of Pd (0.5, 1, 5 wt%). Results indicate that the presence of Pd on γ-alumina substantially abates the formation of deposits, leads to a notable increase in the production of alkanes and olefins and additionally improves the energy efficiency compared to those obtained for the non-packed reactor and the bare γ-alumina packed reactor. A low amount of Pd (0.5 and 1 wt%) favors achieving a higher production of olefins (mainly C2H4 and C3H6) and a higher yield of H2. Increasing Pd loading to 5 wt% promotes the interaction of H2 and olefins, which consequently intensifies the successive hydrogenation of unsaturated compounds, thus incurring a higher production of alkanes (mainly C2H6 and C3H8). The substantial abatement of the deposits is ascribed to the role of Palladium in moderating the strength of the electric and shifting the reaction pathways, in the way that hydrogenation reactions of deposits’ precursors become faster than their deposition on the catalyst.

scholarly journals The Role of H2:N2 Ratio on the NH3 Synthesis Rate and on Process Economics over the Co3Mo3N Catalyst

2020 ◽  
Author(s):  
Mustafa Yasin Aslan ◽  
Justin Hargreaves ◽  
Deniz Uner
Keyword(s):  
Atmospheric Pressure ◽  
Ammonia Synthesis ◽  
Synthesis Rate ◽  
Process Economics

In this study, the process economics of ammonia synthesis over Co3Mo3N was investigated by searching an optimum feed stoichiometry. By ammonia synthesis rate measurements at atmospheric pressure and 400 oC...

New opportunities for efficient N2 fixation by nanosheet photocatalysts

Nanoscale ◽  
2018 ◽  
Vol 10 (33) ◽  
pp. 15429-15435 ◽  
Author(s):  
Hao Li ◽  
Chengliang Mao ◽  
Huan Shang ◽  
Zhiping Yang ◽  
Zhihui Ai ◽  
...  
Keyword(s):  
N2 Fixation ◽  
Ammonia Synthesis ◽  
Chemical Processes ◽  
Holy Grail ◽  
Mild Conditions ◽  
Important Chemical ◽  
Catalytic Ammonia Synthesis

Catalytic ammonia synthesis from dinitrogen (N2) under mild conditions has been considered to be the “holy grail” of N2 fixation, which is one of the most important chemical processes in the agriculture, biological and industrial fields.

XPS and TEM Studies on the Role of the Support and Alkali Promoter in Ru/MgO and Ru−Cs+/MgO Catalysts for Ammonia Synthesis

2007 ◽  
Vol 111 (26) ◽  
pp. 9427-9436 ◽  
Author(s):  
Yurii V. Larichev ◽  
Boris L. Moroz ◽  
Vladimir I. Zaikovskii ◽  
Safar M. Yunusov ◽  
Elena S. Kalyuzhnaya ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Alkali Promoter
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