scholarly journals Plasma-Catalytic Ammonia Synthesis beyond the Equilibrium Limit

ACS Catalysis ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 6726-6734 ◽  
Author(s):  
Prateek Mehta ◽  
Patrick M. Barboun ◽  
Yannick Engelmann ◽  
David B. Go ◽  
Annemie Bogaerts ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Equilibrium Limit ◽  
Catalytic Ammonia Synthesis

scholarly journals Plasma-Catalytic Ammonia Synthesis Beyond the Equilibrium Limit

2020 ◽  
Author(s):  
Prateek Mehta ◽  
Patrick M. Barboun ◽  
Yannick Engelmann ◽  
David B. Go ◽  
Annemie Bogaerts ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Ammonia Synthesis ◽  
Packed Bed ◽  
Reaction Rates ◽  
Thermal Reaction ◽  
Equilibrium Limit ◽  
Plasma Activation ◽  
Catalytic Material ◽  
Material Choice ◽  
Catalytic Ammonia Synthesis

We explore the consequences of non-thermal plasma activation on product yields in catalytic ammonia synthesis, a reaction that is equilibrium-limited at elevated temperatures. We employ a minimal microkinetic model that incorporates the influence of plasma activation on N<sub>2</sub> dissociation rates to predict NH<sub>3</sub> yields into and across the equilibrium-limited regime. NH<sub>3</sub> yields are predicted to exceed bulk thermodynamic equilibrium limits on materials that are thermal-rate-limited by N<sub>2</sub> dissociation. In all cases, yields revert to bulk equilibrium at temperatures at which thermal reaction rates exceed plasma-activated ones. Beyond-equilibrium NH<sub>3</sub> yields are observed in a packed bed dielectric-barrier-discharge reactor and exhibit sensitivity to catalytic material choice in a way consistent with model predictions. The approach and results highlight the opportunity to exploit synergies between non-thermal plasmas and catalysts to affect transformations at conditions inaccessible through thermal routes.

scholarly journals Plasma-Catalytic Ammonia Synthesis Beyond the Equilibrium Limit

2020 ◽  
Author(s):  
Prateek Mehta ◽  
Patrick M. Barboun ◽  
Yannick Engelmann ◽  
David B. Go ◽  
Annemie Bogaerts ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Ammonia Synthesis ◽  
Packed Bed ◽  
Reaction Rates ◽  
Thermal Reaction ◽  
Equilibrium Limit ◽  
Plasma Activation ◽  
Catalytic Material ◽  
Material Choice ◽  
Catalytic Ammonia Synthesis

We explore the consequences of non-thermal plasma activation on product yields in catalytic ammonia synthesis, a reaction that is equilibrium-limited at elevated temperatures. We employ a minimal microkinetic model that incorporates the influence of plasma activation on N<sub>2</sub> dissociation rates to predict NH<sub>3</sub> yields into and across the equilibrium-limited regime. NH<sub>3</sub> yields are predicted to exceed bulk thermodynamic equilibrium limits on materials that are thermal-rate-limited by N<sub>2</sub> dissociation. In all cases, yields revert to bulk equilibrium at temperatures at which thermal reaction rates exceed plasma-activated ones. Beyond-equilibrium NH<sub>3</sub> yields are observed in a packed bed dielectric-barrier-discharge reactor and exhibit sensitivity to catalytic material choice in a way consistent with model predictions. The approach and results highlight the opportunity to exploit synergies between non-thermal plasmas and catalysts to affect transformations at conditions inaccessible through thermal routes.

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

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.

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

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 Solid solution for catalytic ammonia synthesis from nitrogen and hydrogen gases at 50 °C

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Masashi Hattori ◽  
Shinya Iijima ◽  
Takuya Nakao ◽  
Hideo Hosono ◽  
Michikazu Hara
Keyword(s):  
Solid Solution ◽  
Ammonia Synthesis ◽  
Catalytic Ammonia Synthesis

Applications of rare earth oxides in catalytic ammonia synthesis and decomposition

2021 ◽  
Author(s):  
Ji Feng ◽  
Xilun Zhang ◽  
Jiemin Wang ◽  
Xiaohua Ju ◽  
Lin Liu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Hydrogen Storage ◽  
Ammonia Synthesis ◽  
High Capacity ◽  
Rare Earth Oxides ◽  
Energy Carrier ◽  
Mild Conditions ◽  
Catalytic Ammonia Synthesis

Ammonia gains increasing attention as a promising energy carrier because of its high capacity for hydrogen storage (17.6 wt.%), facile liquefaction under mild conditions and easy libration of H2. Catalytic...

Sign in / Sign up

Export Citation Format

Share Document