Results 51 to 60 of about 31,892 (230)

Wrinkled Strain‐Enriched High‐Entropy Metallene Enables Cross‐Site Tandem Nitrate‐to‐Ammonia

Angewandte Chemie, EarlyView.
A wrinkled 2D PdFeCoNiCuIn high‐entropy metallene overcomes the low atom utilization of high‐entropy alloys. Indium‐induced strain and p‐d hybridization enable a cross‐site tandem pathway for nitrate reduction to ammonia. It achieves 99.3% Faradaic efficiency and an NH3 yield rate of 4.55 mmol h−1 mgcat−1.
Tianfang Yang, Yang Liu, Menghao Kong, Shilong Li, Shizhe Liu, Guanjie He, Shuyan Gao   +6 more
wiley   +2 more sources

Electrified Haber-Bosch Process: Green Ammonia Production

, 2022
This report provides a design for a new process to make the ammonia-producing Haber-Bosch process more sustainable by reducing its CO2 emissions. It presents different elements of a process design with most importantly; process diagrams, mass and energy ...
Visschers, Cas (author), El Tawil Hamade, Yara (author), Tran, Minh Tâm Kevin (author)   +2 more
core  

Ketazine‐Linked Covalent Organic Framework for Metal‐Free Electrocatalytic Nitrate‐to‐Ammonia Conversion

Angewandte Chemie, EarlyView.
A metal‐free fluorinated ketazine‐linked COF is introduced as an efficient electrocatalyst for nitrate reduction to ammonia under neutral conditions. Fluorine substitution enhances π–π stacking and crystallinity, enabling a Faradaic efficiency of 59.9% and an NH3 yield rate of 1639.9 µmol h−1 mgCOF−1 at −0.9 V versus RHE. This establishes an unexplored
Islam E. Khalil, Ashadul Adalder, Badr Elkamash, Narad Barman, Darosch Asgari, Luoxing Xiang, Warisha Tahir, Franziska Hess, Ranjit Thapa, Adisak Boonchun, Uttam Kumar Ghorai, Prasenjit Das, Arne Thomas   +12 more
wiley   +2 more sources

Techno-environmental assessment of small-scale Haber-Bosch and plasma-assisted ammonia supply chains.

Science of the Total Environment, 2022
Haber-Bosch (HB) process, the main method for ammonia (NH3) production, contributes to near 2% of the global carbon emissions because the hydrogen input is obtained from fossil sources.
J. Osorio-Tejada, N. Tran, V. Hessel
semanticscholar   +1 more source

Microwave-assisted ammonia synthesis over Cs-Ru/CeO2 catalyst at ambient pressure: Effects of metal loading and support particle size

Catalysis Communications, 2022
Industrially, ammonia is produced by Haber-Bosch process under high temperatures and pressures, consuming more than >2% of the world's energy production.
Alazar Araia, Yuxin Wang, Brandon Robinson, Changle Jiang, Sean Brown, Christina Wildfire, Dushyant Shekhawat, Jianli Hu   +7 more
doaj   +1 more source

Sustainable nitrogen fixation: Agrochemical research in food production adapted to planetary limits

Mètode Science Studies Journal: Annual Review
Today's global food production depends on the fixation of atmospheric nitrogen by using the Haber-Bosch process. The application of this catalytic system laid the foundations for the development of industrial agriculture and led to an unprecedented ...
Lluís Pascual, Emanuela Accardo, Hermenegildo Garcia Baldoví   +2 more
doaj   +1 more source

Microwave-enhanced catalytic ammonia synthesis under moderate pressure and temperature

Catalysis Communications, 2021
In this study, an alternative approach based on microwave-enhanced ammonia synthesis for Haber-Bosch process was carried out under moderate pressure of 0.1–0.65 MPa and temperature range of 280–400 °C over a stable CsRu/CeO2 catalyst.
Yuxin Wang, Tuhin S. Khan, Christina Wildfire, Dushyant Shekhawat, Jianli Hu   +4 more
doaj   +1 more source

Dynamic Etching‐Induced Cl‐Terminated Ti3C2Clx/Ti3ZnC2 Heterostructure for Ammonia Electrosynthesis and Zinc‐Nitrogen Batteries

Advanced Science, EarlyView.
A stable Ti3C2Clx/Ti3ZnC2 heterostructure, fabricated by dynamic etching, exhibits outstanding electrocatalytic NRR activity (NH3 yield: 20.1 µg h−1 mg−1, FE: 38.1%) in alkaline media. The corresponding Zn‐N2 battery achieves a peak power density of 36.5 µW cm−2 and an NH3 yield of 13.1 µg h−1 mg−1, providing an advanced strategy for NH3 and ...
Yu Wang, Ying Sun, Liqun Ye, Jichi Liu, Hui Li, Yang Fu, Fengzhan Sun, Jieshan Qiu, Chang Yu, Tianyi Ma   +9 more
wiley   +1 more source

Intuitive study on the effect of support morphology over Cs-Ru/CeO2 catalyst for microwave-initiated ammonia synthesis

Catalysis Communications, 2022
Microwave-initiated ammonia synthesis is a potential candidate to the current Haber-Bosch process that can operate from stranded renewable energy source.
Alazar Araia, Yuxin Wang, Changle Jiang, Sean Brown, Ashley Caiola, Brandon Robinson, Jianli Hu   +6 more
doaj   +1 more source

Integrating Machine Learning With Constant‐Potential Simulation to Unravel Charge‐Transfer Mechanisms in Electrochemical Nitrogen Fixation

Advanced Science, EarlyView.
Integrating interpretable machine learning with the fixed‐potential method reveals a novel mechanism: the catalytic activity of the electrochemical nitrogen reduction reaction is governed by partial charge transfer, induced by variations in the intermediate potential of zero charge under constant potential.
Yufei Xue, Dushuo Feng, Yuefei Zhang, Yang Zhang, Yalong Jiao, Aijun Du, Guoping Gao   +6 more
wiley   +1 more source