Articles tagged with Catalysis
Researchers have developed a catalytic process that can effectively reduce nitrogen oxides emissions from diesel-powered vehicles, particularly during transient and cold-start conditions. The breakthrough could pave the way for more efficient NOx removal technologies, enabling diesel engines to meet stringent emissions regulations.
Researchers at the University of Sydney have made a breakthrough in rechargeable zinc-air batteries by developing a new three-stage method that produces low-cost and high-performance catalysts. The new catalysts can be used to build rechargeable zinc-air batteries, overcoming one of the biggest hurdles preventing their widespread use.
Scientists at Fuzhou University have created a macroscopic aerogel from carbonitride nanomaterials that catalyzes the water-splitting reaction under visible-light irradiation. The material offers excellent structural and electronic properties, making it suitable for artificial photosynthesis.
Researchers have developed a new mathematical model that describes how molecules are transported to react within nanoreactors. The model reveals that the reaction rate is not limited by molecule concentration, but rather by the shell's permeability, opening up possibilities for controlling chemical reactions.
A new study by psychologists at the University of Kent shows that arts engagement predicts 'prosociality' and volunteering. The research found that people's greater engagement in the arts was more strongly associated with charitable giving and volunteering than demographic variables such as age, education, or income.
Researchers at Los Alamos National Laboratory have discovered a new class of low-cost fuel cell catalysts that match the performance of precious metal-based catalysts. Direct atomic-level observations have provided unique insights into their efficiency potential.
Researchers at Rice University have developed a catalyst that can split water into hydrogen and oxygen, offering a potential solution for renewable energy. The catalyst uses laser-induced graphene, a low-cost material, to produce large bubbles of oxygen and hydrogen simultaneously.
Researchers at Tokyo Institute of Technology developed a method to synthesize microscopic alloy nanoparticles using dendrimers, achieving 24 times greater oxidization activity than commercially available catalysts. The discovery opens up new possibilities for creating high-performance materials in various fields.
Scientists at Rice University and Lawrence Livermore National Laboratory have developed new two-dimensional electrocatalysts that extract hydrogen from water with high efficiency and low cost. The catalysts were created by forming bubbles between layers, which breaks them apart and increases the number of active sites.
Lawrence Livermore National Laboratory scientists have developed a technique to efficiently extract hydrogen from water using electricity. The new catalysts enable high-performance water splitting with minimal catalyst loading, making it scalable and cost-effective.
Scientists have developed a light-activated material that can chemically convert carbon dioxide into carbon monoxide without generating unwanted byproducts. The material, a nickel organic crystalline structure, showed near 100% selectivity for CO production and no detection of competing gas products.
Researchers at Osaka University have developed a new method for building complex organic molecules by selectively transforming strong carbon-fluorine bonds. This breakthrough enhances the control over chemical reactions, enabling more synthetic freedom for constructing intricate carbon structures.
A researcher at Queen's University Belfast has discovered a way to convert contaminated aluminium foil into a highly pure biofuel catalyst, which could significantly reduce global waste and energy problems. The new catalyst is more environmentally-friendly, effective, and cheaper than commercial alternatives.
The researchers created a three-layer structure of nickel, graphene, and a compound of iron, manganese, and phosphorus that can produce both hydrogen and oxygen simultaneously. The material is scalable, stable in acidic and basic solutions, and requires less energy than traditional catalysts.
Researchers create faster and easier way to make sulfur-containing polymers using SuFEx reaction technique, combined with newly identified catalysts. The achievement reduces cost of large-scale production and produces far less hazardous waste.
Researchers at Vanderbilt University have developed a method to produce patterned monolayers that can perform multiple functions, such as catalyzing chemical reactions and sensing molecules. These materials offer a new option for device designers, allowing for the creation of single materials with two functionalities.
Enzymes called [FeFe]-hydrogenases efficiently convert electrons and protons into hydrogen, offering a potential solution for biotechnological production of the energy source. The team's discovery reveals the crucial role of a complex structure called the H-cluster in facilitating this process.
A research team at KAIST developed diagnostic sensors using protein-encapsulated nanocatalysts to analyze human exhaled breath and diagnose diseases. The sensors achieved high sensitivity and selectivity, detecting biomarker gases related to diseases with improved performance compared to conventional platinum-based catalysts.
The research team developed a novel reaction to synthesize organohalides, a crucial class of compounds for pharmaceuticals, with up to 98% enantiomeric purity. This breakthrough addresses the challenge of producing chiral molecules in isomerically pure form, paving the way for new medicines.
Researchers at Brookhaven Lab have successfully trapped argon gas in a two-dimensional array of tiny 'cages', allowing for the detailed study of single atoms in confinement. This achievement could lead to the design of new materials for gas separation and nuclear waste remediation.
Researchers at Ruhr-University Bochum have discovered that selenium can form bonds similar to those of hydrogen bonds, resulting in accelerated chemical reactions. The team's findings suggest that weaker bonds, such as hydrogens bonds, might be sufficient for activation or catalysis.
Researchers at Osaka University have developed a new catalyst for amide hydrogenation that operates under mild conditions, allowing for the efficient conversion of amides to amines. The catalyst enables sustainable pharmaceutical production with minimal by-products and high selectivity.
Okinawa Institute of Science and Technology researchers created efficient catalysts based on inexpensive and abundant manganese to convert carbon dioxide into formic acid and formamide, widely used in industry. The new catalyst can perform over 6,000 turnovers and is stable in air, opening possibilities for other CO2 conversions.
UT Southwestern researchers have developed a method for direct conversion of double bond-containing hydrocarbons into multifunctional compounds with high purity. The new reaction utilizes a specially designed chiral catalyst to selectively create desirable molecules, accelerating pharmaceutical production.
Researchers at the University of Bath have been awarded £1M to develop new catalysts using iron, which could reduce environmental impact and improve efficiency. The project aims to create sustainable methods for producing molecules crucial for manufacturing pharmaceuticals and agrochemicals.
An international team has developed a new catalyst for producing high-purity hydrogen gas at low temperatures and pressures. This breakthrough could improve the efficiency of fuel cells that run on hydrogen fuel and reduce costs.
Researchers at Nagoya Institute of Technology have developed a new reaction system that produces aziridines with high yield and selectivity. The method uses phosphite as a catalyst and achieves high rates of production of one enantiomer, which is essential for pharmaceutical applications.
Researchers from CAS developed noble metal-based heterogeneous electrocatalysts with enhanced catalytic activity and high selectivity for the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR). DMFCs operated well at high-concentration methanol, outperforming conventional strategies.
Researchers developed a new method to tightly fix powder catalysts on electrode surfaces, addressing the challenge of high physical stress induced by gas evolving reactions. The technique involves applying an organic polymer that transforms into carbon at high temperatures, providing a stable and conductive surface for catalysis.
Researchers at TUM have created a new process to convert organic waste into fuel, utilizing zeolite catalysts that reduce temperatures and energy requirements. The process takes place in confined spaces inside zeolite crystals, increasing reaction rates by up to 100 times.
Scientists have discovered a cheap and efficient way to produce olefins, the chemical feedstock for many products, using a titanium-based catalyst. The reaction can be performed at low temperature and has the potential to reduce greenhouse gas emissions and costs associated with traditional fossil fuel-based methods.
Researchers at Nagoya University have developed a new approach to metal catalysis that selectively converts biomass into high-value chemical products under mild conditions. The method uses high-valent transition metals, which offers better control over reactivity and reduces side reactions.
Researchers at Kyushu University have developed a multifunctional catalyst that can oxidize both hydrogen and carbon monoxide in the same reaction system. The catalyst mimics the behavior of two enzymes and shows promise for increasing energy production efficiency from hydrogen fuel cells.
Scientists have developed a new low-temperature catalyst that produces high-purity hydrogen gas while using up carbon monoxide, improving the performance of fuel cells. The catalyst operates at low temperature and pressure, making it less expensive and easier to use.
A team of UK and Argentinean chemists developed a catalyst that mimics the Z-scheme mechanism of photosynthesis, reducing atmospheric CO2 levels. The catalyst, combining cuprous oxide and titanium dioxide, transfers electrons to CO2 while breaking water molecules.
Researchers have developed an efficient catalyst that converts CO2 from the air into synthetic natural gas in a 'clean' process using solar energy. The catalyst produces almost pure methane without side products and operates at mild temperatures, making it viable for industrial activities.
A new rhodium-based catalyst enhances hydrosilylation of olefins by 96%, outperforming existing supported-rhodium catalysts. The co-immobilization of a tertiary amine on silica improves catalytic activity, paving the way for sustainable solutions.
A recent discovery by Stanford University scientists could lead to a new, more sustainable way to make ethanol without corn or other crops. The technology uses three basic components: water, carbon dioxide and electricity delivered through a copper catalyst.
Researchers at Waseda University have developed an efficient alternative method for synthesizing ammonia at low temperature using surface proton hopping. This breakthrough could lead to on-demand ammonia production plants running on renewable energy, with potential applications in various industries and energy sources.
A team of chemists led by Carnegie Mellon University's Rongchao Jin developed a site-specific surgery method to precisely tailor nanoparticles' properties. The technique, published in Science Advances, increases photoluminescence by about 10-fold and enhances catalytic activity.
A new nanomaterial capable of reducing CO2 with high selectivity and turnover number has been developed by Tokyo Tech. The material consists of carbon nitride nanosheets combined with a metal structure known as binuclear ruthenium(II) complex, resulting in unprecedented binding of RuRu' to the nanosheet surface.
Researchers at Hokkaido University have successfully developed a method for the catalytic asymmetric borylation of ketones, a breakthrough expected to facilitate the development of new medicines and functional chemicals. The team has identified a suitable catalyst element called chiral NHC complex for efficient reaction with diboron.
A team of researchers has developed improved tin electrocatalysts for CO2 reduction, which can increase the energy efficiency of the process. The study used computational quantum chemistry modeling to predict which dopant additives can enhance the conversion rate.
Researchers at KAUST developed a novel catalyst to split water efficiently in acidic conditions, paving the way for greener power sources. The molybdenum coating improves stability and prevents oxygen recombination, enabling longer-term hydrogen production.
A new, cheap catalyst has been invented to split water into oxygen and hydrogen using electricity. The catalyst, made of abundant non-precious metals like nickel and copper, is highly conductive and efficient, making it a promising solution for reducing the cost of producing clean hydrogen fuel.
EPFL scientists have developed an Earth-abundant catalyst to split carbon dioxide into oxygen and carbon monoxide, producing liquid fuels from renewable sources. The catalyst achieved a high efficiency of 13.4% in converting CO2 to CO using solar energy.
Researchers have discovered a crucial step in the water-splitting process, enabling the creation of clean solar fuels. The study reveals the characteristics of cobalt catalysts and their role in facilitating the formation of oxygen-oxygen bonds.
Researchers have developed a new composite catalyst that reduces the use of rare earth elements, such as Cerium, in catalytic converters. The catalyst showed improved oxygen storage and release capabilities compared to traditional catalysts, providing better buffering effects during fuel-rich and lean exhaust conditions.
Researchers have designed a molecular system that incorporates individual components specialized for light absorption, charge separation, and catalysis into a single supramolecule. The seven-metal system with six Ru centers produces more hydrogen and remains stable for longer periods than the four-metal system with three Ru centers.
Researchers from Penn State and Florida State University have developed a new, industrially scalable catalyst that splits water into hydrogen with minimal external energy. The molybdenum disulfide alloy improves the efficiency of the process, enabling cheaper production of clean hydrogen fuel.
Researchers have developed a more energy-efficient catalytic process to produce olefins, which are crucial building blocks for polymer production. By analyzing carboranes' role in dehydration reactions, the team created linear relationships between energy input and alcohol characteristics.
Researchers at Nagoya University have developed a highly efficient catalyst that can break down even the toughest amide bonds in plastics under mild conditions. This breakthrough has significant implications for the recovery of materials from waste plastics and could help realize an anthropogenic chemical carbon cycle.
Researchers developed a self-healing catalyst film that regenerates under water electrolysis conditions, enhancing hydrogen production efficiency. The film forms and regenerates through electrostatic attraction forces, allowing it to remain stable for several days.
Researchers at Argonne National Laboratory have developed a vanadium catalyst that enhances the hydrogenation process, previously dominated by expensive precious metals. The breakthrough involves synthesizing vanadium in a unique configuration, demonstrating its catalytic activity.
Biological engineers at Utah State University have successfully decoded and reprogrammed fungal biosynthetic machinery to produce natural compounds with anti-cancer, anti-microbial and anti-cholesterol properties. The team has reproduced several bio-active compounds in engineered microbes, including beauvericin and bassianolide.
Physicists at the University of Houston have discovered a highly active and stable electrocatalyst produced from ferrous metaphosphate on a nickel foam platform, outperforming traditional catalysts in efficiency and affordability. The breakthrough could enable large-scale water splitting to produce hydrogen for clean energy.
Researchers have found a new method of microbial energy production called flavin-based electron bifurcation, which is an ancient form of energy generation and conservation. This mechanism allows organisms to generate two levels of energy from a single precursor compound, conserving wasted energy in the process.
Researchers created uniform 3.2 nm platinum-zinc particles with twice the catalytic activity per surface site, outperforming larger particles containing the same amount of platinum.
Researchers developed a new process to create graphene from ethene, using higher temperatures than previous methods. The technique could open up new applications for graphene due to its lower cost and simplicity.
Researchers have successfully developed a high-efficient, stable, and multifunctional Na-Fe3O4/HZSM-5 catalyst for direct production of gasoline from CO2 hydrogenation. The catalyst exhibited 78% selectivity to C5-C11 hydrocarbons under industrial conditions.