Articles tagged with Catalysis
A Montana State University researcher has developed nano-scale materials that can convert carbon dioxide into chemical building blocks, marking a potential step forward in reducing atmospheric CO2. The materials mimic enzymes and have the ability to selectively capture CO2 from the air.
A new study by Prof. Daniel Mandler and his team found that organic molecules can significantly influence the electrical properties of gold nanoparticles, up to 71 mV. The research highlights the importance of capping agents in controlling nanoparticle behavior and provides insights for customizing their interactions.
Researchers developed a new photocatalyst that enhances in-plane crystallinity and induces selective 2e-ORR, boosting H2O2 production. The method achieves a 6.1-fold increase in efficiency compared to traditional carbon nitride.
Researchers achieved a new method for synthesizing α-substituted carbonyl compounds using a palladium-catalyzed anti-Michael addition reaction. The method produces high-yield products and can be applied to various nucleophiles, including indoles and aromatic compounds.
A Northwestern University study reveals the experimental evidence for how the surface of iridium oxide changes during water electrolysis, enabling the design of a novel catalyst with higher activity and longer stability. The new catalyst is three to four times more efficient than existing iridium-based catalysts.
Researchers at Tsinghua University have developed a novel method for producing dimethoxymethane (DMM), a promising alternative to traditional fossil fuels. The team used phosphorus-modified nanocarbon catalysts, which demonstrated high methanol conversion rates and DMM selectivity.
Researchers develop innovative strategy to study reaction dynamics and rapid structural changes in protein crystals, enabling detailed analysis of intermediates. The method holds potential for designing new drugs, catalysts, and enzymatic systems.
Scientists have developed an efficient method for hydrogenolysis of 5-hydroxymethylfurfural (HMF) to 2,5-dimethylfuran (DMF) using a Ni-C3N4 catalyst with ultra-low Ni loading. The catalyst achieves high DMF yield and productivity, outperforming other metal-based catalysts.
Lehigh University researchers developed a novel spectroscopy technique called modulation excitation spectroscopy (MES) to study selective catalytic reduction (SCR) of nitrogen oxides. The results, published in Nature Communications, reveal the correct reaction pathway and have significant implications for optimizing catalytic converters.
Empa researchers have developed a system to investigate up to ten different reaction conditions for producing synthetic fuels from CO2. The system accelerates the discovery process by generating a large number of high-quality datasets, enabling scientists to make accelerated discoveries.
Researchers have developed a novel technique using a new holmium catalyst for synthesizing hydrocarbazoles with tetrasubstituted carbon. The method uses a lanthanide-based catalyst and can be recycled, paving the way for sustainable chemical processes.
Scientists at Tokyo Tech create innovative catalysts by encapsulating copper nanoparticles within hydrophobic porous silicate crystals, significantly enhancing catalytic activity and methanol production. The breakthrough paves the way for more efficient methanol synthesis from CO2.
Research elucidates catalyst selectivity in electrocatalysis through a multi-scale kinetic model. The study demonstrates the importance of surface roughness on reaction mechanisms, providing insights for optimizing catalyst performance and long-term operation.
Researchers have introduced new self-healing mechanisms to address the stability challenges in photoelectrochemical (PEC) water splitting. These mechanisms, such as intrinsic and extrinsic self-healing, aim to improve the long-term stability of semiconductor light absorbers, protection layers, and co-catalysts.
Researchers at Stanford University have made significant advancements in the development of a 'liquid battery' technology that uses LOHCs to store and release energy. The team discovered a novel, selective catalytic system that allows for the efficient storage of electrical energy in liquid fuels without generating gaseous hydrogen.
Researchers have created a new efficient catalyst for the oxygen evolution reaction, a crucial step in producing hydrogen from water. The catalyst is about four times better than the current state-of-the-art iridium catalyst, requiring less iridium to produce hydrogen at the same rate.
Researchers have discovered that a platinum nanoparticle catalyst can assemble and disassemble itself during reaction and post-reaction conditions. This reversible process may offer clues to the catalyst's stability and recyclability, with potential benefits for controlling long-term stability.
Researchers create Pt/CdS catalyst for upcycling polylactic acid to hydrogen and pyruvic acid through photothermal catalysis, improving the activity of the process. The study reveals that the oxidation of poly-lactic acid molecules is initiated by the cleavage of the α-C(sp³)-H bond.
Researchers at USTC design a tandem catalyst combining Cu single atoms with Co3O4 nanosheets, improving the electroreduction of nitrate into ammonia. The new catalyst achieves higher ammonia production rates than previous systems.
A German junior research group at the University of Oldenburg is developing precious-metal-free catalysts to convert carbon dioxide into methanol, formaldehyde, and ethylene. The team aims to create inexpensive and durable materials for large-scale industrial applications.
Scientists from the Department of Energy's Lawrence Berkeley National Laboratory have discovered a new way to produce ammonia, an essential fertilizer and component of cleaning products, using rare-earth metals as catalysts. The process operates at ambient conditions, reducing energy consumption and promoting food security.
A metal-free organic framework catalyst has been developed for the electrocatalytic production of ethylene from carbon dioxide. The catalyst, based on a nitrogen-containing covalent organic framework (COF), demonstrated high selectivity and performance for the production of ethylene.
The new materials offer an alternative to metal-organic frameworks (MOFs) and have already shown early promise for the capture of iodine. They are yet to be fully explored but hold potential for applications in proton conduction, catalysis, water capture, and hydrogen storage.
Researchers developed a novel photocatalytic strategy for functionalizing ether C(sp3−H bonds in aryl ethers, resulting in high yields of ester products. The method uses chlorine radicals generated from various chloride sources to activate aryl ether C(sp3−H bonds through hydrogen atom transfer.
A low-cost, tin-based catalyst selectively converts CO2 to ethanol, acetic acid, and formic acid, producing valuable liquid hydrocarbons. The discovery could help reduce greenhouse gas emissions by converting CO2 into desired chemicals near the site of production.
A team of researchers has gained new understanding of metal-nitrogen-carbon (M-N-C) catalysts, crucial for the development of low-cost and efficient hydrogen generation. By analyzing twelve distinct M-N-C configurations, they discovered that potential zero charge and solvation effects play a pivotal role in pH-dependent activities.
A novel multifunctional catalyst has been developed to convert methane into valuable hydrocarbons, reducing greenhouse gas emissions and energy consumption. The catalyst's spatial distribution of Cu and acid sites determines the final products, with uniform distribution leading to stable and efficient methanol production.
A team of chemists discovered that cyclopropanation reactions can take the scenic route, producing intricate molecular structures and unexpected side-reactions. Advanced techniques revealed a complex network of forking chemical pathways, showcasing the need for open-minded research and consideration of all possible side-reactions.
Researchers developed a cost-effective nanoparticle catalyst that converts CO2 into CO, producing syngas for valuable compounds. The β-Mo2C/SiO2 catalyst demonstrated high activity and stability compared to traditional precious metal-based catalysts.
A new sugar-based catalyst has successfully converted carbon dioxide into carbon monoxide, a building block for producing fuels that can replace gasoline. The catalyst, made from an inexpensive and abundant metal, offers a potential solution for disposing of captured carbon and reducing greenhouse gas emissions.
A novel organic synthetic strategy utilizing mutualism enables the simultaneous synthesis of heterodehydrocoupling of hydrostannane and reduction of quinoline, expanding substrate scope and reducing reaction energy. This breakthrough inspires new possibilities for tackling 'impossible reactions' in organic synthesis.
Researchers propose a new strategy to further enhance the performance of gas sensors using single-atom catalysts. The review discusses the application, structure, and principles of semiconductor-based gas sensors, as well as the mechanisms through which single-atom catalysts improve gas sensitivity.
Researchers have developed a novel technique to analyze zeolites using 17O solid-state NMR. They improved the spectral resolution by addressing an often-neglected interaction and gained valuable information on zeolite structures. The technique revealed atomic-scale local environments of catalytically important moieties.
Researchers have developed ultrathin Bi4O5Br2 nanosheets with controlled oxygen vacancies, which exhibit high performance for piezocatalytic H2O2 production. The material's unique structure and oxygen vacancies improve the separation and transfer of piezoinduced charges, as well as promote oxygen adsorption and activation on the surface.
Researchers have discovered a greener way to produce ammonia, essential for fertilizers, by developing a new catalyst that works stably at relatively low temperatures. This breakthrough reduces the amount of energy needed to synthesize ammonia, making it an attractive alternative to fossil fuels.
A new research project, PHOTOZYME, aims to develop photobiocatalytic tools to convert basic chemicals into chiral molecules. The project combines biocatalysis, photochemistry, and directed evolution to create sustainable molecular synthesis.
A new statistical-modeling workflow can quickly identify molecular structures of products formed by chemical reactions, accelerating drug discovery and synthetic chemistry. The workflow also enables the analysis of unpurified reaction mixtures, reducing time spent on purification and characterization.
Researchers at The University of Manchester have developed a new ruthenium catalyst, proven to be long-term stable in air while maintaining high reactivity. This breakthrough enables the user to run simultaneous reactions, streamlining optimisation procedures and reducing waste accumulation.
Researchers developed a novel hydrogen injection method using palladium to address contact issues of buried oxide thin film transistors. This method reduces contact resistance by two orders of magnitude and increases charge carrier mobility, enabling the application of amorphous oxide semiconductors in next-generation storage devices.
A Scripps Research team has uncovered a simple and inexpensive way to produce quaternary carbon molecules using an iron catalyst. This breakthrough could benefit drug developers by making molecules cheaper and easier to produce at small and large scales.
Researchers used operando spectroscopy to study the oxygen evolution reaction in iridium oxide catalysts. The team found that binding of reaction intermediates to the electrode was controlled by long-range interactions between the intermediates and the solution, which depended on pH.
Researchers from Meijo University developed a new catalyst using high entropy alloy nanoparticles to grow high-density carbon nanotubes. The study shows that the unique surface structure of HEA NPs provides various active sites for catalytic reactions, resulting in higher catalytic activity than individual metals.
Researchers have developed Ni single-atom catalysts supported on anatase for propane dehydrogenation, showing superior intrinsic activity and propylene selectivity. The catalysts exhibited higher rates of propylene production compared to traditional nanoparticle counterparts, likely due to the isolation of active sites.
Tohoku University researchers created a reliable means of predicting the performance of molecular metal-nitrogen-carbon (M-N-C) catalysts. Their breakthrough uses pH-field coupled microkinetic modeling to evaluate charge transfer at the Fe-site, identifying suitable surrounding functional groups for oxygen reduction reactions.
Dr. Chana Sacks is the new Editor-in-Chief of NEJM Evidence, focusing on providing high-quality, practice-changing evidence for medical professionals. The journal aims to change how medical professionals think about generating evidence while making clinical learning engaging and fun.
A team of chemists at UNC-Chapel Hill has developed a unique approach to harnessing sunlight to produce hydrogen gas. By inducing catalysts to self-assemble into globules, they create a more efficient system for splitting water into its constituent elements - hydrogen and oxygen.
Researchers at a FAPESP-supported research center have developed an electrochemical nitrogen reduction process using iron oxide and molybdenum disulfide catalysts. This method eliminates the need for high temperatures and pressures, reducing power consumption and greenhouse gas emissions.
Researchers at Brookhaven National Laboratory and University of North Carolina Chapel Hill develop a room-temperature conversion reaction strategy to convert carbon dioxide into methanol. The process employs a recyclable organic reagent and sunlight, producing an easily storable and transportable liquid fuel.
Researchers developed mesoporous metal oxides on flexible materials using synergetic effect of heat and plasma at lower temperatures. The devices can withstand bending thousands of times without losing energy storage performance.
Researchers at the University of Adelaide have developed a new nanocomposite electrocatalyst that enables lithium-sulphur batteries to achieve full charge/discharge in less than five minutes. This breakthrough has significant implications for high-performance battery systems and energy storage technologies.
A new photocatalytic synthesis method has been developed for the creation of arylacetic acid analogs with diverse functional groups from CO2. The method leverages a visible-light photoredox-catalyzed carboxylation reaction, showcasing mild reaction conditions and good tolerance of functional groups.
Researchers at Linköping University have developed a method to synthesize hundreds of new 2D materials, expanding the possibilities for energy storage, catalysis, and water purification. The study uses a three-step process, including large-scale computations and chemical exfoliation, to identify and create suitable materials.
Researchers successfully tailored bubbles with different curvature to induce strain on MoS2, enhancing proton adsorption and HER kinetics. The study shows a substantial boost in HER activity, with values reaching 129.65 mA cm-2 compared to 48.11 mA cm-2 at -0.4 V vs. RHE.
A study by researchers from Dalian Institute of Chemical Physics reveals the interface confinement effect on open space in In2O3-TiO2 catalyst, leading to enhanced activity and stability. The formed InOx nanolayers show distinct chemistry and can be confined on various oxide surfaces.
Researchers developed a new catalyst that enhances the conversion of ethanol to butadiene with high selectivity and yield. The catalyst's bifunctional sites improve the synergistic effect between Co and Y species, leading to better performance.
A team of researchers at Tohoku University's Advanced Institute for Materials Research has made a breakthrough in understanding the relationship between catalyst structures and their reactions. By studying the electrochemical CO2 reduction reaction (CO2RR) in Tin-Oxide-based catalysts, they uncovered the active surface species responsi...
Researchers have developed a copper(II)-alkylperoxo complex that can selectively oxidize unactivated alkanes, showcasing exceptional reactivity and paving the way for sustainable technology. By manipulating the solvent environment, the team uncovered the unique properties of their catalyst.
A team at Zhejiang University has developed a self-driving cloaked unmanned drone with an intelligent aeroamphibious invisibility cloak, capable of manipulating electromagnetic scattering in real-time across dynamic environments. The cloak integrates perception, decision-making, and execution functionalities using spatiotemporal modula...
A team of researchers has determined the detailed mechanism of cyclization catalyzed by the cyclization domain of cyclic β-1,2-glucan synthase from Thermoanaerobacter italicus. The study reveals that the enzyme produces β-glucosidase-resistant compounds and features a transglycosylation reaction.
Chemists at NUS have developed a new iron-catalysed reaction to generate two alkyl-alkyl bonds in crowded environments, enabling the creation of valuable dialkylated compounds. The method harnesses an earth-abundant iron catalyst to combine alkenes with sp3-hybridised organohalides and organozinc reagents.