Thermodynamic analysis of electrochemical synthesis of ammonia in solid-state proton-conducting electrochemical reactors with considering interfacial potential steps

2022 ◽  
Author(s):  
Wenchao Lian ◽  
Mo Yingyu ◽  
Libin Lei ◽  
Yongzheng Ou ◽  
Ruiming Qiu ◽  
...  
Keyword(s):  
Solid State ◽  
Thermodynamic Analysis ◽  
Electrochemical Synthesis ◽  
Atmospheric Pressure ◽  
Electrochemical Reactors ◽  
Mild Conditions ◽  
Free Hydrogen ◽  
Hydrogen Carrier ◽  
Electrochemical Synthesis Of Ammonia ◽  
Interfacial Potential

Ammonia (NH3) as a carbon-free hydrogen carrier shows great potential as fuel and its production at mild conditions is desired. NH3 synthesis at atmospheric pressure can be realized in solid-state...

Electrochemical Synthesis of Ammonia from Nitrogen Under Mild Conditions: Current Status and Challenges

2020 ◽  
Vol 3 (2) ◽  
pp. 239-270 ◽  
Author(s):  
Yao Yao ◽  
Jing Wang ◽  
Usman Bin Shahid ◽  
Meng Gu ◽  
Haijiang Wang ◽  
...  
Keyword(s):  
Electrochemical Synthesis ◽  
Current Status ◽  
Mild Conditions ◽  
Electrochemical Synthesis Of Ammonia

Solid-state electrochemical synthesis of ammonia: a review

2011 ◽  
Vol 15 (9) ◽  
pp. 1845-1860 ◽  
Author(s):  
Ibrahim A. Amar ◽  
Rong Lan ◽  
Christophe T. G. Petit ◽  
Shanwen Tao
Keyword(s):  
Solid State ◽  
Electrochemical Synthesis ◽  
Electrochemical Synthesis Of Ammonia

scholarly journals Synthesis of ammonia directly from wet air using Sm0.6Ba0.4Fe0.8Cu0.2O3−δ as the catalyst

2015 ◽  
Vol 182 ◽  
pp. 353-363 ◽  
Author(s):  
Rong Lan ◽  
Khaled A. Alkhazmi ◽  
Ibrahim A. Amar ◽  
Shanwen Tao
Keyword(s):  
Electrochemical Synthesis ◽  
Atmospheric Pressure ◽  
Low Cost ◽  
Single Chamber ◽  
Perovskite Catalyst ◽  
The Future ◽  
Electrochemical Synthesis Of Ammonia ◽  
Simple Technology ◽  
Ammonia Formation

Ammonia was directly synthesised from wet air at 400 °C at atmospheric pressure. A new perovskite Sm0.6Ba0.4Fe0.8Cu0.2O3−δ was used as the electrocatalyst for electrochemical synthesis of ammonia. Ammonia formation rates of 9.19 × 10−7 mol s−1 m−2 and 1.53 × 10−6 mol s−1 m−2 were obtained at 400 °C when wet air and wet N2 were introduced into a simple single chamber reactor, respectively. The perovskite catalyst is low cost compared to the previously reported Ru/MgO and Pt/C catalysts. This experiment indicates that ammonia can be directly synthesised from wet air, a very promising simple technology for sustainable synthesis of ammonia in the future.

Cooling Efficiencies of a NiTi-Based Cooling Process

2013 ◽  
Author(s):  
Marvin Schmidt ◽  
Andreas Schütze ◽  
Stefan Seelecke
Keyword(s):  
Solid State ◽  
Thermodynamic Analysis ◽  
Cooling System ◽  
Analysis Method ◽  
Efficiency Ratio ◽  
Cooling Process ◽  
First Results ◽  
Work Input ◽  
Underlying Mechanisms ◽  
The Impact

Energy saving and environmental protection are topics of growing interest. In the light of these aspects alternative refrigeration principles become increasingly important. Shape memory alloys (SMA), especially NiTi alloys, generate a large amount of latent heat during solid state phase transformations, which can lead to a significant cooling effect in the material. These materials do not only provide the potential for an energy-efficient cooling process, they also minimize the impact on the environment by reducing the need for conventional ozone-depleting refrigerants. Our paper, presenting first results obtained in a project within the DFG Priority Program SPP 1599 “Ferroic Cooling”, focuses on the thermodynamic analysis of a NiTi-based cooling system. We first introduce a suitable cooling process and subsequently illustrate the underlying mechanisms of the process in comparison with the conventional compression refrigeration system. We further introduce a graphical solution to calculate the energy efficiency ratio of the system. This thermodynamic analysis method shows the necessary work input and the heat absorption of the SMA in stress/strain- or temperature/entropy-diagrams, respectively. The results of the calculations underline the high potential of this solid-state cooling methodology.

Ru-doped barium strontium titanates of the cathode for the electrochemical synthesis of ammonia

2019 ◽  
Vol 339 ◽  
pp. 115010 ◽  
Author(s):  
Hwan Kim ◽  
Yong Sik Chung ◽  
Taewook Kim ◽  
Heechul Yoon ◽  
Jae Gi Sung ◽  
...  
Keyword(s):  
Electrochemical Synthesis ◽  
Barium Strontium ◽  
Electrochemical Synthesis Of Ammonia

scholarly journals Electrochemical synthesis of ammonia using a proton conducting solid electrolyte and nickel cermet electrode

2017 ◽  
Vol 125 (4) ◽  
pp. 252-256 ◽  
Author(s):  
Naohiro SHIMODA ◽  
Yusuke KOBAYASHI ◽  
Yutaka KIMURA ◽  
Go NAKAGAWA ◽  
Shigeo SATOKAWA
Keyword(s):  
Solid Electrolyte ◽  
Electrochemical Synthesis ◽  
Proton Conducting ◽  
Electrochemical Synthesis Of Ammonia
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