Results 51 to 60 of about 2,514 (156)

Carbon black supported manganese phthalocyanine: Efficient electrocatalyst for nitrogen reduction to ammonia

Engineering Reports
Ammonia (NH3) is regarded as a renewable energy source as well as an important molecule for agricultural applications. The energy‐intensive Haber‐Bosch method produces large amounts of CO2 gas during ammonia production.
Ashadul Adalder, Santosh R. Waghela, Sachin A. Shelukar, Nilmadhab Mukherjee, Swati Das, Uttam Kumar Ghorai   +5 more
doaj   +1 more source

Fertilizer Sustainability: A Conceptual Framework for Assessing Equitable and Sustainable Soil Inputs

Sustainable Development, EarlyView.
ABSTRACT Modern industrial agriculture is predicated largely on the production and utilization of chemical fertilizers. Although this approach has played an integral role in increasing food security in many parts of the world, the long‐term sustainability of this resource‐intensive approach is questionable.
Benjamin Wilde, Roman Hüppi, Gina Garland, Rafaela Feola Konz, Kenza Benabderrazik, William Thompson, Martin Hartmann, Bernard Vanlauwe, Kokou Kintche, Leonhard Späth, Matieyedou Konlambigue, Johanna Jacobi, Johan Six   +12 more
wiley   +1 more source

Integrated Solar Production of Fertilisers and Fuels

SolarPACES Conference Proceedings
Solar fertiliser production including the internal utilisation of the side-product oxygen is analysed as one promising example of an innovative process utilising renewable energy resources and addressing the aspect of integrated production – here in the
Martin Roeb, Pablo López Martínez, Nicole Neumann, David Baumstark, Lena Klaas, Dorottya Kriechbaumer, Nathalie Monnerie, Christos Agrafiotis, Christian Sattler   +8 more
doaj   +1 more source

Electrochemical Synthesis of Ammonia: Recent Efforts and Future Outlook

Membranes, 2019
Ammonia is a key chemical produced in huge quantities worldwide. Its primary industrial production is via the Haber-Bosch method; a process requiring high temperatures and pressures, and consuming large amounts of energy. In the past two decades, several
Ioannis Garagounis, Anastasios Vourros, Demetrios Stoukides, Dionisios Dasopoulos, Michael Stoukides   +4 more
doaj   +1 more source

Bifunctional Electrocatalysts in Rechargeable Lithium‐Gas Batteries: Material Evolution and Mechanistic Insights from Metal‐Free Carbons to Carbon‐Supported Single‐Atom Sites

Small, EarlyView.
This review charts the material evolution of bifunctional electrocatalysts for rechargeable lithium‐gas batteries. It highlights the journey from heteroatom‐doped, metal‐free carbon architectures to precision‐engineered carbon‐supported single‐atom sites. The discussion focuses on mechanistic insights into how these catalysts govern reversible O2, CO2,
Daming Ren, Shuimei Chen, Yuzheng Wu, Xiaodan Huang, Jong Beom Baek, Ashok Kumar Nanjundan   +5 more
wiley   +1 more source

Entropy production minimization in a tubular ammonia synthesis reactor: a mathematical optimization approach with variable geometry and heat flux control

Frontiers in Energy Research
Ammonia is one of the most widely produced chemicals worldwide and is increasingly considered a promising hydrogen carrier for energy storage. We propose a novel thermodynamic optimization strategy for tubular ammonia reactors based on second-law ...
Diego F. Mendoza, Juan Carlos Quintero-Díaz, Signe Kjelstrup   +2 more
doaj   +1 more source

The Role of Oxophilicity and Water for Coordination Complexes as Ammonia Stores

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Exposing metal salts to humid ammonia leads to different products, which can be understood on the basis of the metal’s oxophilicity. Exposing copper vitriol to ammonia furthermore leads to the formation of single crystalline [Cu(H2O)(NH3)4]SO4 at ambient conditions.
Daniel Tennhoff, Jörg Daniels, Joachim Breternitz   +2 more
wiley   +1 more source

Flexible Green Ammonia Production: Impact of Process Design on the Levelized Cost of Ammonia

Fuels
This study evaluates the economic feasibility of flexible, renewable ammonia production in Italy through a comprehensive sensitivity analysis of the levelized cost of ammonia (LCOA).
Cecilia Pistolesi, Alberto Giaconia, Claudia Bassano, Marcello De Falco   +3 more
doaj   +1 more source

An Efficient Technique for Ammonia Capture in the Haber-Bosch Process Loop-Membrane-Assisted Gas Absorption. [PDF]

Polymers (Basel), 2022
Petukhov AN, Atlaskin AA, Smorodin KA, Kryuchkov SS, Zarubin DM, Atlaskina ME, Petukhova AN, Stepakova AN, Golovacheva AA, Markov AN, Stepanova EA, Vorotyntsev AV, Vorotyntsev IV.   +12 more
europepmc   +1 more source

In situ mapping of iron oxidation in laminar metal fuel flames using X‐ray absorption spectroscopy

Journal of Synchrotron Radiation, EarlyView.
For the first time an iron metal flame has been mapped by in situ X‐ray absorption spectroscopy. Strong gradients in oxidation state and phase composition across the metallic core and the flame front were found with FeO peaking at the visible flame front and Fe3O4 forming further beyond.Metal fuels such as iron are promising carbon‐free energy carriers
Lukas Braun, Fabian P. Hagen, Michal Fedoryk, Malte Seitz, Björn Stelzner, Dimosthenis Trimis, Jan-Dierk Grunwaldt, Dmitry E. Doronkin   +7 more
wiley   +1 more source