A peanut shell-derived economical and eco-friendly biochar catalyst for electrochemical ammonia synthesis under ambient conditions: combined experimental and theoretical study

2021 ◽  
Author(s):  
Anmin Liu ◽  
Yanan Yang ◽  
Xuefeng Ren ◽  
Mengfan Gao ◽  
Xingyou Liang ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Ammonia Synthesis ◽  
Peanut Shell ◽  
Ambient Conditions ◽  
Promising Alternative ◽  
Green Material ◽  
Electrochemical Conversion ◽  
Bosch Process

The electrochemical conversion of N2 to NH3 under ambient conditions is a highly promising alternative to the energy-intensive Haber–Bosch process. As a catalyst for electrocatalytic N2 synthesis of NH3, biochar is a sustainable green material.

Boosted electrochemical ammonia synthesis by high-percentage metallic transition metal dichalcogenide quantum dots

Nanoscale ◽  
2020 ◽  
Vol 12 (20) ◽  
pp. 10964-10971 ◽  
Author(s):  
Jian Zhang ◽  
Chongyi Ling ◽  
Wenjie Zang ◽  
Xiaoxia Li ◽  
Shaozhuan Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Transition Metal ◽  
Electrochemical Method ◽  
Ammonia Synthesis ◽  
Value Added ◽  
Transition Metal Dichalcogenide ◽  
Ambient Conditions ◽  
Bosch Process

The electrochemical method can directly convert N2 into the high-value-added NH3 under ambient conditions and is considered to be a green and sustainable alternative to the traditional Haber–Bosch process.

An amorphous WC thin film enabled high-efficiency N2 reduction electrocatalysis at ambient conditions

2021 ◽  
Author(s):  
Shaoxiong Li ◽  
Yonglan Luo ◽  
Luchao Yue ◽  
Ting Shuai Li ◽  
Yan Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Efficiency ◽  
Aqueous Media ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Promising Alternative ◽  
Bosch Process

Ambient electrochemical N2 reduction offers a promising alternative for the energy-intensive Haber-Bosch process toward renewable NH3 synthesis in aqueous media but needs efficient electrocatalysts to enable the N2 reduction reaction...

High-efficiency electrochemical conversion of nitric oxide into ammonia on Ni2P nanoarray at ambient conditions

2021 ◽  
Author(s):  
Ting Mou ◽  
Jie Liang ◽  
Ziyu Ma ◽  
Longcheng Zhang ◽  
Yiting Lin ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitrogen Cycle ◽  
High Efficiency ◽  
Ambient Conditions ◽  
Electrochemical Conversion ◽  
Bosch Process

Electroreduction of NO to NH3 at ambient conditions mitigates the human-caused unbalance of globe nitrogen cycle and represents a sustainable and on-site alternative to the industrial Haber–Bosch process, while its...

scholarly journals Achieving industrial ammonia synthesis rates at near-ambient conditions through modified scaling relations on a confined dual site

2021 ◽  
Vol 118 (30) ◽  
pp. e2106527118
Author(s):  
Tao Wang ◽  
Frank Abild-Pedersen
Keyword(s):  
Density Functional ◽  
Ammonia Synthesis ◽  
Synthesis Rate ◽  
Ambient Conditions ◽  
Functional Theory ◽  
Ru Catalyst ◽  
Bosch Process ◽  
Energy Scaling ◽  
Industrial Solutions ◽  
Dual Site

The production of ammonia through the Haber–Bosch process is regarded as one of the most important inventions of the 20th century. Despite significant efforts in optimizing the process, it still consumes 1 to 2% of the worldwide annual energy for the high working temperatures and pressures. The design of a catalyst with a high activity at milder conditions represents another challenge for this reaction. Herein, we combine density functional theory and microkinetic modeling to illustrate a strategy to facilitate low-temperature and -pressure ammonia synthesis through modified energy-scaling relationships using a confined dual site. Our results suggest that an ammonia synthesis rate two to three orders of magnitude higher than the commercial Ru catalyst can be achieved under the same reaction conditions with the introduction of confinement. Such strategies will open pathways for the development of catalysts for the Haber–Bosch process that can operate at milder conditions and present more economically viable alternatives to current industrial solutions.

Recent Advances and Perspective on Electrochemical Ammonia Synthesis under Ambient Conditions

Small Methods ◽  
2021 ◽  
pp. 2100460
Author(s):  
Yang Li ◽  
Qi Zhang ◽  
Zongwei Mei ◽  
Shunning Li ◽  
Wenbin Luo ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Ambient Conditions ◽  
Recent Advances

Ammonia synthesis by N2 and steam electrolysis in molten hydroxide suspensions of nanoscale Fe2O3

Science ◽  
2014 ◽  
Vol 345 (6197) ◽  
pp. 637-640 ◽  
Author(s):  
Stuart Licht ◽  
Baochen Cui ◽  
Baohui Wang ◽  
Fang-Fang Li ◽  
Jason Lau ◽  
...  
Keyword(s):  
Current Density ◽  
Steam Reforming ◽  
Ammonia Synthesis ◽  
Coulombic Efficiency ◽  
Steam Pressure ◽  
Molar Ratio ◽  
Applied Current ◽  
Bosch Process ◽  
Electron Conversion ◽  
Steam Reforming Of Methane

The Haber-Bosch process to produce ammonia for fertilizer currently relies on carbon-intensive steam reforming of methane as a hydrogen source. We present an electrochemical pathway in which ammonia is produced by electrolysis of air and steam in a molten hydroxide suspension of nano-Fe2O3. At 200°C in an electrolyte with a molar ratio of 0.5 NaOH/0.5 KOH, ammonia is produced at 1.2 volts (V) under 2 milliamperes per centimeter squared (mA cm−2) of applied current at coulombic efficiency of 35% (35% of the applied current results in the six-electron conversion of N2 and water to ammonia, and excess H2 is cogenerated with the ammonia). At 250°C and 25 bar of steam pressure, the electrolysis voltage necessary for 2 mA cm−2 current density decreased to 1.0 V.

scholarly journals Ammonia Synthesis at Ambient Conditions via Electrochemical Atomic Hydrogen Permeation

2021 ◽  
pp. 3817-3823
Author(s):  
Davide Ripepi ◽  
Riccardo Zaffaroni ◽  
Herman Schreuders ◽  
Bart Boshuizen ◽  
Fokko M. Mulder
Keyword(s):  
Atomic Hydrogen ◽  
Ammonia Synthesis ◽  
Hydrogen Permeation ◽  
Ambient Conditions

scholarly journals Communication—Partial Oxidation of MnS for Synergistic Electrocatalysis of N2-to-NH3 Fixation at Ambient Conditions

2021 ◽  
Author(s):  
Peiei Li ◽  
Dan Cheng ◽  
Xiaohua Zhu ◽  
Meiling Liu ◽  
Youyu Zhang
Keyword(s):  
Partial Oxidation ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Faradaic Efficiency ◽  
Bosch Process ◽  
Ambient Nh3 ◽  
Reaction Performance ◽  
Excellent Selectivity

Abstract Compared with the traditional Haber-Bosch process, electrochemical N2-to-NH3 reduction affords an eco-friendly and sustainable alternative to ambient NH3 synthesis with the aid of efficient electrocatalysts. In this work, partial oxidation of MnS to obtain the MnS-Mn3O4 is proved as a promising noble-free electrocatalysts of N2to NH3 fixation at ambient conditions. When tested in 0.1 M Na2SO4, the electrochemical N2 reduction reaction performance of MnS-Mn3O4 is improved comparing with the MnS, which achieves large NH3 yield of 16.74 μg h–1 mgcat.–1 and a high Faradaic efficiency of 5.72%. It also exhibits excellent selectivity of N2-to-NH3 and strong long-term electrochemical stabil

Single atom catalysis for electrocatalytic ammonia synthesis

2021 ◽  
Author(s):  
Jieying Wan ◽  
Jiageng Zheng ◽  
Hao Zhang ◽  
Angjian Wu ◽  
Xiaodong Li
Keyword(s):  
Ammonia Synthesis ◽  
Single Atom ◽  
Great Success ◽  
Modern Agriculture ◽  
Bosch Process

Ammonia is a vital base molecule for modern agriculture and industry. As the commercially-mature approach for NH3 production, the traditional Haber–Bosch process has achieved great success; however, it also suffers...

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