Articles tagged with Catalysis
Researchers have developed a new method to convert gaseous hydrocarbons into complex molecules at room temperatures and low pressures using UV light and a decatungstate catalyst. This breakthrough simplifies processing, reduces material waste, and decreases pollution.
A team of scientists has found a way to generate the gas at precisely targeted locations inside the body, potentially opening new lines of research on nitric oxide's effects. The method uses an electric voltage to drive the reaction that produces nitric oxide.
Researchers at GIST designed new chiral ligands to generate useful compounds in a single step, achieving high enantioselectivity and efficiency. The novel catalytic reaction paves the way for synthesizing novel drugs and natural products with numerous bioactivities.
Researchers at NIMS and AIST have developed a small, energy-efficient sensor that can continuously monitor ethylene gas levels in fruits and vegetables, allowing for optimal transportation and storage schedules. This new sensor enables accurate estimation of ripening progression and potential reduction of food waste.
Researchers discovered that self-replicating molecules can act as catalysts, speeding up ring formation and exhibiting a primitive form of metabolism. The system uses light energy to power growth, bringing artificial life one step closer.
Researchers have developed a novel approach for chiral drug synthesis in living systems, utilizing neutrophil-directed asymmetric transfer hydrogenation. This method enables site-selective synthesis of enantiomers, which is crucial for controlling the pharmacological activity of chiral drugs like Ibuprofen.
Researchers at ETH Zurich have developed a method to control the dispersity of polymer materials, allowing for the production of polymers with specific properties. This is achieved by using two catalysts with different effects, enabling chemists to adjust the dispersity precisely and produce uniform or highly dispersed polymers.
Scientists designed a functional ternary Pt/Re/SnO2/C catalyst, which exhibits more than ten times higher activity in the ethanol oxidation reaction compared to commercial platinum catalysts. The new catalyst features improved stability and is suitable for use as an anode material in direct ethanol fuel cells.
Researchers at SLAC and Stanford discovered that water exposure can round particles, opening up active sites in palladium-platinum nanoparticles. Larger particles are more active due to their shape change during reactions.
Researchers have created a catalyst that can break carbon-fluorine bonds via hydrodefluorination, a process known as C-F bond breaking. The innovation has potential applications in remediating fluorinated compounds and could lead to cleaner, more efficient chemical processes.
Researchers have designed efficient indium oxide catalysts for converting CO2 into methanol with high activity and selectivity. Theoretical modeling identified a specific facet of the catalyst as most favorable for methanol synthesis, which was confirmed by experimental results.
Researchers have developed a novel portable pyroelectric technology that converts waste heat into usable power, offering a clean alternative to fossil fuels and nuclear energy. The technology has an extended lifetime and uses on-chip combustion of methanol to harness energy.
Researchers at Osaka University have synthesized an easy-to-handle nano-cobalt phosphide catalyst that achieves efficient hydrogenation of nitriles to primary amines. The catalyst combines efficiency, cost-effectiveness, ease of handling, and reusability, offering numerous advantages in terms of cost and safety.
McKone's project aims to convert carbon dioxide into useful fuels and chemicals, addressing the environmental impact of excess CO2. He is developing new catalysts and reactors to mimic biological enzymes and improve efficiency.
The nickel-based catalyst precursor proved effective for in-situ conversion of asphaltenes, reducing the content of resins and asphaltenes. The catalyst also reduced viscosity by destroying carbon-heteroatom bonds and interacting with aromatic rings.
Scientists from Kyushu University developed a new catalyst capable of assisting three key reactions for using hydrogen in energy and industry. The catalyst takes advantage of the molecular twist to switch between structures similar to those of natural enzymes.
Researchers at Uppsala University have resurrected billions-year-old enzymes and repurposed them to catalyse new chemical reactions. The study develops sustainable solutions in biotechnology and chemically degrades environmental toxins.
A new study from the University of Pittsburgh and Politecnico di Milano advances computational catalysis by simulating realistic catalysts under reaction conditions. The researchers developed a method to model catalyst morphology and catalytic activity under reaction conditions, enabling the prediction of unpredictable reactions.
Researchers at TU Dresden are developing nanostructured porous carbon materials for sustainable energy applications. Prof. Qiang Xu joins the team to advance hydrogen evolution catalysis and electrical energy storage.
Researchers at Hokkaido University have created a novel, silica-supported catalyst that enables efficient propane dehydrogenation without catalyst deactivation. The catalyst maintains high propylene selectivity and stability even at temperatures above 600°C.
Researchers at Shinshu University developed a new photocatalyst design that enables efficient solar hydrogen production, with the ability to achieve near-perfect quantum efficiency. This breakthrough has significant implications for scalable and economically viable hydrogen production.
Researchers from Tokyo University of Science improve light-driven water-splitting to produce hydrogen by etching the reaction catalyst with plasma jets in solution. This technique enhances the properties of BiVO4 nanocrystals, resulting in better catalytic performance and improved water splitting.
Researchers at KAIST developed a novel approach to modulate local CO2 concentration in gas-diffusion electrode-based flow electrolyzers. This method improves the selectivity, conversion rate, and electrode stability, promoting C-C coupling reactions for multi-carbon molecule production.
A hybrid sensor is being developed to detect diabetes from exhaled breath using nanoparticles loaded on 1D metal oxides. This innovative technology aims to provide a non-invasive, affordable, and rapid detection method for continuous diabetes monitoring, potentially reducing serious health problems and life-threatening side effects.
Scientists from Japan and Italy use synchrotron X-ray total scattering and vibrational spectroscopies to determine the structural disorder and dimensions of a building unit in the heterogeneous Ziegler-Natta catalyst. The research sheds new light on the full elucidation of nanostructure in practical heterogeneous catalysts.
University of Delaware researchers have developed a technique to visualize the three-dimensional structure of materials in detail while maintaining context. This approach enables scientists to study specific particles on the material's surface and observe how they evolve over time under different conditions.
Avium is developing a Dual Element Matrix Water Electrolyzer to generate hydrogen from water using electricity. The technology has the potential to make hydrogen production friendlier to the environment by reducing materials costs and increasing on-site generation.
UC Berkeley researchers develop a new catalyst to add functional groups to the strongest carbon-hydrogen bonds, opening doors to novel molecule synthesis. The breakthrough could lead to rapid production of complex structures for drugs, plastics, and other chemicals.
Scientists developed hollow structured photocatalysts with controllable spatial location of active metals, chemical compositions, and tunable shell thickness. AuPt@HMZS nanoreactors exhibited excellent catalytic activity in cinnamyl alcohol oxidation under visible light.
Researchers discovered molybdenum telluride (MoTe2) nanoflakes exhibit high activity and selectivity for H2O2 production in acidic media. The nanosheets show improved performance over state-of-the-art Pt-Hg and Pd-Hg alloys, with potential applications in decentralized H2O2 production.
Researchers have discovered a new kind of rubber and catalyst that can be used to make flexible, repairable, sustainable objects. The new rubber material can be completely repaired and returned to its original strength in minutes, even at room temperature, with an amine catalyst.
Researchers at Martin-Luther-University Halle-Wittenberg have developed a method to significantly improve the properties of inexpensive nickel hydroxide electrodes during electrolysis. The treatment process increases the material's stability and activity, allowing it to outperform more expensive catalysts.
Japanese researchers have successfully developed an asymmetric iodoesterification catalyst, combining four chemical bonds to coordinate the formation of one catalyst. This breakthrough enables the industrial-scale production of optically active esters with high efficiency and precision.
Researchers used AI to speed up the search for a key material in a new catalyst that converts carbon dioxide into ethylene with record efficiency. The resulting electrocatalyst has an 80% faradaic efficiency, a new record for this reaction, and shows promise for clean energy storage and carbon capture.
Researchers have introduced a new concept for designing photocatalytic systems with reversed configurations, which significantly improve light absorption, charge separation, and surface catalysis. This design concept can be extended to other systems and reactions to promote solar-to-chemical conversion.
A theoretical study found that defects in graphene can increase charge transfer rates by an order of magnitude, selectively catalyzing electron transfer to certain reagents. This property has great potential for developing efficient electrochemical sensors and electrocatalysts.
A study by Dr. Yuqin Zou and colleagues reveals that hierarchically nanostructured NiO-Co3O4 electrodes with plentiful interface defects exhibit excellent HMF oxidation activity and stability. The researchers demonstrate the positive role of cation vacancies in catalyzing the electro-oxidation process.
Researchers have discovered an enzyme that converts low-cost sugars into hard-to-produce alpha-GalNAc sugars with therapeutic properties, particularly relevant for cancer vaccines. The enzyme, GH109, has anti-cancer qualities and can be optimized for large-scale production.
Scientists have discovered three essential roles for water in the catalytic conversion of methane to methanol, which facilitates high selectivity while blocking unwanted side reactions. The findings could speed the development of catalysts that make use of methane escaping from gas and oil wells.
The KIST research team developed a high-performance ceramic fuel cell that can operate at mid-to-low temperatures below 600°C using butane fuels. This technology enables the use of affordable fuels like butane in smaller, integrated systems for portable and mobile power sources.
A new catalyst has been developed that can convert ethane into ethylene with improved efficiency and reduced greenhouse gas emissions. The discovery could have a significant economic impact on the plastics industry and energy extraction operations.
Researchers at the University of Maryland have developed a novel method to mix immiscible metals at the nanoscale, creating a range of bimetallic materials. This breakthrough enables the rapid synthesis of copper-based alloys with uniform structure and morphology.
Researchers at Tokyo Institute of Technology have created a catalyst that enables the production of ammonia at just 50°C, using half the energy required by existing techniques. This breakthrough has significant implications for sustainable agricultural food production and reduces carbon dioxide emissions from fossil fuel use.
Chemists have developed a titanium catalyst that makes light usable for selective chemical reactions, producing highly selective products that can be used for antiviral drugs or luminescent dyes. The new catalyst uses green light to trigger reactions without destroying organic compounds.
A KIST research team developed a catalyst that converts CO2 into chemicals using 20% less iridium than existing catalysts, showing at least 31% higher performance. The catalyst maintains high durability for hundreds of hours, reducing energy required during the process by more than half.
Researchers have developed Fe <sub>1-x</sub> S-decorated mesoporous carbon spheres as a nanoreactor for lithium-sulfur battery cathodes, showing excellent polysulfide catalytic activity and cyclic stability. The design strategy provides a new protocol for building high-capacity and long-cycle rechargeable batteries.
A team of researchers developed a microwave heating strategy for synthesizing a transition metal chalcogenide nanostructure that efficiently catalyzes CO2 electroreduction to carbon monoxide. The catalyst achieved a record conversion current of 212 mA cm-2 and selectivity of ~95.5%.
A team of scientists has developed a new 2D catalyst that can improve the efficiency of water purification using hydrogen peroxide. The catalyst, composed of two co-catalysts on one nanosheet, was designed to increase the efficiency of the process without additional chemical treatment.
Researchers have developed a new type of oxygen reduction catalyst using nitrogen-doped porous carbon supported Fe single atom catalysts. These catalysts outperform commercial platinum-based catalysts in terms of ORR activities, stability, and methanol resistance.
The research team developed an intelligent microsystem employing machine learning and automation to reduce chemical waste by two orders of magnitude and catalytic discovery from weeks to hours. By screening catalysts and polymers faster, the method could lead to more efficient design and environmentally benign plastics.
Researchers at Tokyo University of Science devise a new method to synthesize complex acyl fluorides from widely available acyl fluorides through a reversible reaction involving palladium. The technique uses an 'acyl-exchange reaction' to produce adequate amounts of complex acyl fluorides with high efficiency.
Researchers have created a new Pt-based catalyst using the 'composite energy trap' model, which effectively inhibits migration and agglomeration of loaded nanoparticles. The model catalyst retains high activity even after aging at 1000°C, offering promising results for sintering-resistant nano-catalysts.
Scientists have developed a catalyst that converts nitrate into nitrite without high temperatures or acidity, addressing water pollution concerns. The catalyst's mechanism mimics natural enzymes, offering a promising solution for detoxifying nitrate in mild environments.
Researchers created a platinum-titania catalyst that selectively breaks carbon-oxygen bonds in plant derivatives, producing biofuels. The strategy could be applied to design stable and active catalysts for industrial chemical production from biomass-derived molecules.
Researchers from the University of Münster have developed a novel approach to allyl functionalization using radical chemistry, generating π-allylpalladium complexes through visible light activation. The method has been shown to be highly selective and sustainable, with over 60 examples demonstrating its utility in various applications.
Researchers found that core-shell configuration of a Ni-Au catalyst is lost during reaction and recovered afterwards. The Ni-Au alloy, not the shell, acts as the active surface, explaining high CO selectivity.
Researchers at Aalto University developed a new graphene-carbon nanotube catalyst to improve the efficiency of hydrogen fuel cells and water electrolyzers. The catalyst's electrocatalytic activity can be altered depending on the material it is deposited on, offering a promising strategy for producing green technology.
Researchers at TIFR create metal-free catalyst that converts CO2 to methane with excellent productivity and selectivity. The catalyst is recyclable and shows significant increase in production rate after regeneration cycles.
Researchers at UNIGE have developed a new technique for creating chains of molecular rings that do not use standard chemical interactions but instead contact with large molecular surfaces. This discovery helps answer an old contradiction in classical chemistry and provides new prospects for molecular cyclization.
Researchers at KAIST developed a 3D hierarchically porous nanostructured catalyst that efficiently converts CO2 to CO, overcoming mass transport limitations. The new catalyst shows high selectivity and mass activity, promising large-scale applications for green energy.