Articles tagged with Ammonia
Liquid ammonia has high energy density and is compatible with existing infrastructure, making it attractive for decarbonizing marine shipping and heavy-duty transport. However, challenges such as low reactivity and high NOx emissions must be addressed through advanced injection strategies and combustion control.
A new study outlines the technical status and future outlook of ammonia-fired power generation, positioning it as a viable hydrogen energy carrier and low-carbon fuel. The technology has been developed for gas turbines and coal-fired boilers, with significant reductions in emissions and improved performance.
Scientists at TU Wien have designed a new sustainable route to ammonia synthesis using metal-organic frameworks (MOFs) as catalysts. By tuning the MOF structures, they can modulate their catalytic performance, providing valuable insights into more efficient and sustainable ammonia-production technologies.
Scientists have created a highly efficient Mn-based catalyst for ammonia synthesis, overcoming scaling relationships and improving performance. The new catalyst enables N₂ dissociation through a hydride-assisted mechanism, resulting in higher ammonia synthesis rates.
Applying a magnetic field during catalyst synthesis triples the ammonia yield, making catalytically active sites more accessible. The study demonstrates a scalable strategy for developing next-generation electrocatalysts for efficient and sustainable chemical production.
A breakthrough solution has been unveiled for decarbonizing the transportation sector, particularly heavy-duty marine shipping. The Ammonia Thermal Atmosphere Compression Ignition (TACI) combustion mode achieves highly efficient, stable and clean ammonia diffusion combustion under mild operating conditions.
Researchers discover that catalyst supports facilitate nitrogen activation by capturing and transferring active nitrogen species, bypassing metal particles. This mechanism boosts ammonia synthesis efficiency and provides new insights for catalyst design.
Research at Tohoku University reveals that mushrooms adjust their communication levels in response to urine application, with increased flow when water is applied and decreased flow when urine is applied. The findings suggest that forest mushrooms can flexibly change their electrical information flow in response to various disturbances.
A new Y-doped catalyst has been developed to efficiently transform ammonia into sustainable hydrogen energy, enabling a cleaner energy future. The catalyst, composed of nickel and yttrium, improves the performance of the ammonia decomposition reaction, overcoming issues of intrinsic activity and energy barriers.
A team of researchers from Dalian Institute of Chemical Physics developed a novel catalyst enabling thermocatalytic conversion of N2 and H2 to NH3 at room temperature and ambient pressure. The Li/Ru interface exhibits a synergetic effect promoting N2 activation and hydrogenation steps.
The study found that managing nitrogen pollution requires coordinated strategies, as reducing one type of nitrogen compound can increase another's deposition to the oceans. Future emission changes could alter oceanic nitrogen deposition by 24-6% depending on emission pathways.
Researchers developed a new catalyst strategy that uses BaSi2 as a support for nickel and cobalt to decompose ammonia at lower temperatures. This enables high hydrogen-production activity at reduced temperatures, matching the performance of ruthenium while relying on Earth-abundant metals.
A new study reveals that the Erhai Lake Basin in southwest China is releasing far more atmospheric nitrogen pollution than it absorbs, threatening regional air quality and ecosystem health. The imbalance creates a net surplus of over 8,200 metric tons annually, making the basin a major source of atmospheric nitrogen pollution.
Researchers have developed a more reliable method for measuring natural nitrogen isotope signatures of atmospheric ammonia, allowing for stronger tools to trace pollution sources and improve air quality management. The new approach uses sulfuric acid absorption, achieving higher ammonia recovery rates and stable isotope measurements.
Researchers at JGU developed a novel three-component catalyst for pulsed electrolysis, achieving more than 50% higher ammonia yields. Additionally, they simultaneously produce formic acid as an additional product, reducing waste and increasing efficiency.
The review synthesizes over a decade of research on ammonia inhibition in anaerobic digestion, highlighting emerging tools to stabilize biogas production from nitrogen-rich wastes. Biological and material-based solutions, digital technologies, and synthetic biology are discussed as potential mitigations.
The Rice University team, led by Naomi Halas and Peter Nordlander, has been recognized for its work on advancing light-driven technologies for sustainable ammonia synthesis. The project aims to improve light-based catalysts and reactor prototypes while scaling up sustainable production processes.
Researchers have developed a new way to produce ammonia, a common fertilizer, that is cleaner and more efficient than traditional methods. The process uses calcium nitride and hydrogen atoms to create ammonia without emitting carbon dioxide, and can be scaled up for widespread use.
MIT Energy Initiative researchers developed the largest combined dataset on global ammonia supply chains, examining economic and environmental impact of different scenarios. The study found that a full transition to clean ammonia production could cut greenhouse gas emissions by nearly 71% for a 23.2% cost increase.
Researchers developed a copper-palladium bimetallic catalyst that produces high-quality ammonia through an electrochemical nitrate reduction reaction. The catalyst's dynamic Cu-PdH x interface sites exhibit superior intrinsic activity, achieving remarkable production rates and durability.
A comprehensive review outlines how ammonia disrupts biogas production and identifies practical strategies to prevent system failure. Emerging solutions include the integration of artificial intelligence and machine learning into digester monitoring.
Researchers from Tokyo Metropolitan University reveal how copper particles create in mid-reaction, converting nitrite ions to ammonia. This insight promises leaps forward in developing new industrial chemistry for greener ammonia production.
A global study found that biochar significantly reduces methane and nitrous oxide emissions in composting, while conserving nitrogen and stabilizing carbon. The optimal amount of biochar added is critical, with 10-20% achieving the strongest reductions.
A team of researchers from Worcester Polytechnic Institute has developed a new approach to producing hydrogen using plasma technology and metal alloys. The method reduces energy consumption and carbon emissions compared to traditional methods, making it more environmentally friendly and potentially affordable.
A research team at Tohoku University has developed a new method to convert harmful nitrate pollutants in water into ammonia using NiCuFe-layered double hydroxide catalysts. The study achieved a Faradaic efficiency of 94.8% and demonstrated the efficacy of the process in real-world applications.
A new way to produce ammonia more efficiently has been discovered by boosting its production using low-temperature plasma. This method could create ammonia in smaller facilities closer to where it is needed, making it safer and easier to transport, and potentially leading to a transformative change in energy storage and transportation.
Researchers at RIKEN have developed a mechanochemical method to increase hydrogen saturation in perovskite powder, doubling its capacity. This discovery has significant implications for environmental sustainability and the potential for a hydrogen-based economy, as it enables more efficient production of ammonia fertilizer.
Researchers unveiled the link between solid electrolyte interphase structure and nitrogen reduction to ammonia, a promising eco-friendly approach to fertilizer production. The study reveals that ethanol-to-water ratio in the electrolyte significantly impacts ammonia conversion efficiency.
Scientists have developed a molecular uranium catalyst that can bind nitrogen gas in a 'side-on' way and convert it into ammonia. This breakthrough reveals a new catalytic pathway, bridging biological efficiency and industrial feasibility.
Researchers have developed new artificial nitrite reductases that can precisely generate nitric oxide under conditions relevant to medicine, food safety, and environmental protection. These synthetic catalysts promise low-cost supplements for hypertension or ischemia and precise antibiofilm treatments.
University of Sydney researchers have developed a method to produce ammonia in gas form using electricity, offering a more sustainable alternative to the current Haber-Bosch process. This new approach reduces energy consumption and greenhouse gas emissions, making it a promising solution for the agricultural and hydrogen industries.
Researchers have developed a more efficient method for producing green ammonia using artificial intelligence and machine learning. The new process achieves a sevenfold improvement in production rate while being nearly 100% efficient, making it a viable alternative to traditional methods.
Researchers at the University of Tokyo have successfully produced green ammonia using sunlight and atmospheric nitrogen, mirroring natural processes found in plants. The process uses two catalysts, one based on molybdenum and another on iridium, to activate water molecules and produce ammonia.
Planetary scientists confirmed that Jupiter's mushball hailstorms occur due to unmixing of ammonia and water in the upper atmosphere. The storms are accompanied by fierce lightning and can punch through shallow weather systems, challenging long-held assumptions about gas giant atmospheres.
Researchers propose that microlightning in water droplets, rather than lightning strikes, sparked the formation of organic molecules with carbon-nitrogen bonds. This new mechanism suggests a more plausible explanation for the origin of life on Earth, overcoming criticisms of the Miller-Urey hypothesis.
A research group from Dalian Institute of Chemical Physics achieves electrosynthesis of ammonia from NO in a pressurized electrolyzer with ampere-level current density and long-term stability. The method uses an in situ-grown hierarchical porous copper nanowire array electrode to regulate the kinetics and thermodynamics of the reaction.
Researchers found that functionalizing graphene sheets via plasma treatment can lead to enhanced sensitivity for specific gases, such as ammonia. The study discovered different types of defects created on the graphene sheets depending on the gas used during plasma treatment.
Researchers unveil Ba-Si orthosilicate oxynitride-hydride as a transition metal-free catalyst, offering a more sustainable approach to ammonia production. The novel catalyst demonstrates exceptional stability and higher activity than conventional ruthenium-loaded MgO catalysts.
Researchers at Osaka Metropolitan University have synthesized a biodegradable nylon precursor through artificial photosynthesis, producing an eco-friendly alternative plastic. The breakthrough utilizes L-alanine and ammonia to create raw materials for a nylon-type biodegradable plastic.
Researchers have developed a sustainable alternative to traditional fertilizer production by harnessing the Earth's natural heat and forces to cook up ammonia. The new recipe uses iron-rich rocks and nitrogen-laced water, producing about 1.8 kg of ammonia per ton of olivine, with no energy input or CO2 emission.
Researchers create a novel material consisting of nanosized ruthenium clusters anchored on graphitized carbon that reacts with ammonia molecules to produce hydrogen and nitrogen. The catalyst becomes more active over time due to atomic-level transformations, enhancing hydrogen production from ammonia.
Amateur astronomers, led by Dr. Steven Hill, used a simple analytical method to map ammonia and cloud heights in Jupiter's atmosphere. They found that the primary clouds are likely composed of ammonium hydrosulphide, not ammonia ice, due to photochemical reactions.
Researchers at University at Buffalo have developed a plasma-electrochemical reactor that produces ammonia from nitrogen in the air and water, with no carbon footprint. The process uses renewable electricity and can be scaled up to meet industrial demands.
Researchers at Stanford University developed a prototype device that can produce ammonia from water vapor and nitrogen in the air using wind energy. The technology has the potential to eliminate the need for a century-old method of producing ammonia, which consumes 2% of global energy and contributes 1% of annual carbon dioxide emissions.
Researchers from Ruhr University Bochum have gained new insights into the operation of an iron catalyst that can split ammonia into nitrogen and hydrogen. The team's findings enable more efficient catalysts for ammonia decomposition, paving the way for a promising energy carrier transport solution.
Researchers at Waseda University developed a novel process for converting ammonia into green hydrogen gas at low temperatures using an electric field and Ru/CeO2 catalyst. The study successfully achieved 100% conversion rate at 398K, surpassing the equilibrium conversion rate.
Researchers at Nagoya University found that Eiffinger's tree frog tadpoles store ammonia in their bodies, excreting less waste into the environment. This adaptation allows them to thrive in small water bodies with limited space and few predators.
Researchers at RMIT University have developed a low-carbon approach to producing ammonia, which is used in fertilizers and as a carrier for hydrogen. The new method uses liquid metal catalysts, reducing energy consumption by 20% and carbon emissions by 98%. This could significantly reduce the environmental impact of agriculture and sup...
Dr. Abdoulaye Djire, a Texas A&M chemical engineer, has received the Army Research Office Early Career Award for his research on electrochemical ammonia production. His project aims to develop more efficient and environmentally friendly methods for producing ammonia using 2D nanostructured nitride MXenes.
Researchers at Tohoku University's AIMR have developed a copper-based catalyst for nitrate reduction to ammonia, achieving a significant enhancement in yield and Faraday efficiency. The catalyst's performance is attributed to structural and phase changes during the electrochemical reduction process.
Researchers explore key interaction sites and pathways in advanced materials for efficient ammonia capture. Functional absorbents, porous solid adsorbents and membrane materials are reviewed for their properties and potential applications.
Researchers have developed catalysts that achieve high ammonia Faradaic efficiency and yield rate, transforming nitrate into valuable ammonia. The study's findings provide insights into structural changes on spinel cobalt oxides, enabling more efficient and sustainable industrial processes.
A Rice-built reactor system can convert nitrates into green ammonia and purified water, decarbonizing ammonia production and treating nitrate-contaminated water. The innovative three-chamber system uses recyclable ions to improve reaction efficiency and eliminates the need for high concentrations of supporting electrolytes.
Researchers developed an effective catalyst that significantly enhances ammonia conversion efficiency, offering potential for wastewater treatment and hydrogen production. The catalyst's design allows it to operate at lower voltages, producing less harmful substances like nitrite and nitrate.
A research team at Iowa State University has developed artificial intelligence technology that can model and understand complex chemical reactions, including those involved in ammonia production. The technology uses reinforcement learning to identify the optimal reaction pathway, promising to reduce production costs and emissions.
Researchers at Nagoya University have developed an ammonia-free technique for producing GaN semiconductors, enabling high-quality growth at lower temperatures and reduced raw material consumption. This method also reduces the need for detoxifying systems and energy expenditure.
Researchers developed a crystalline solid that can adsorb and release ammonia, making it easy to recover. The material's high density and ease of desorption make it a promising solution for efficient hydrogen storage.
A research team at Ruhr University Bochum has developed a catalyst that can convert ammonia into hydrogen and nitrite, producing both a clean energy carrier and a fertilizer precursor simultaneously. The process doubles the hydrogen yield while minimizing nitrogen production.
Burning ammonia for maritime fuel could worsen air quality and lead to devastating public health impacts, even with cleaner engine technology and green production methods. The study suggests that stronger regulations could reduce premature deaths from 600,000 to 66,000 annually
Scientists developed an AI-powered system to track tiny devices that monitor markers of disease in the gut. The system includes a wearable coil and ingestible pill with optical gas-sensing membranes, pinpointing device location and measuring gases like ammonia. Future improvements aim to make the device smaller and more power-efficient.