Articles tagged with Catalysis
The team created a nanocatalyst that can perform four separate chemical reactions in one container to produce compounds useful in making a wide range of pharmaceutical products. The new catalyst reduces waste and uses more environmentally friendly solvents.
Researchers have developed a new method to produce butadiene, a key chemical component in plastics and rubber, from biomass-derived sugars. The process, called dehydra-decyclization, uses a novel catalyst to convert sugars into butadiene with high yield and selectivity.
A team of scientists has created a novel photothermocatalytic reaction that reduces CO2 to form useful carbon sources, opening new avenues for efficient CO2 conversion. The process utilizes powdered elemental boron as an all-in-one catalyst, light harvester, and hydrogen source.
Researchers at Nagoya University developed an organic catalyst that generates amino acid derivatives in high yields with precise stereochemical control. A slight structural change in the catalyst leads to inversion of a single stereocenter, enabling access to specific diastereomers.
A team of scientists has unlocked the secret of a gold-based catalyst that converts coal-derived acetylene to vinyl chloride monomer (VCM), a precursor to polyvinyl chloride (PVC). The catalyst, which employs atomically dispersed gold on a solid support, reduces toxic mercury pollution and enables environmentally friendly PVC production.
Researchers at Princeton University have developed a predictive model for Ni cross-coupling success based on subtle steric differences in ligand parameters. The study found that remote steric hindrance enhances reaction yields, which could help explain why Pd-based ligands are less effective on the smaller Ni atom.
Researchers from Brookhaven National Laboratory have identified the active site in a commonly used catalyst for making methanol from CO2. They found that copper zinc oxide should give the best results, with a synergy between copper and zinc oxide accelerating the chemical transformation.
Researchers at Rice University have developed an artificial photosynthesis material that can split water into hydrogen and oxygen using sunlight. The catalyst, made from iron, manganese, and phosphorus, is efficient and easy to manufacture, paving the way for a clean renewable source of hydrogen fuel.
Researchers created a new family of organocatalysts that can be 'switched on' using purple LEDs, mimicking human vision's colorful light-sensitive molecule formation. The novel approach enables the formation of single-handed isomers with improved therapeutic profiles and reduced environmental impact.
Scientists create a more environmentally friendly way to produce vanillin by encapsulating copper-aluminum hydrotalcite in silica. The new process eliminates the need for polluting hydrochloric acid and allows for catalyst reuse.
Researchers at Georgia Tech have developed a nanofiber catalyst that improves the efficiency of rechargeable batteries and hydrogen production. The new catalyst, made from double perovskite nanofibers, shows significantly enhanced oxygen evolution reaction capability compared to existing materials.
The OU professor's research will integrate with educational and outreach programs for American Indian students, emphasizing the importance of sustainable energy. The study aims to quantify the role of catalytically active sites in biomass conversion processes.
Researchers at Scripps Research Institute have developed a versatile molecule-building tool to create new drugs and chemical products by modifying difficult-to-access sites on target molecules. The new template, which anchors reversibly to heterocycle backbones, eliminates reaction steps and is required in small quantities.
A Washington State University research team has developed a more efficient catalytic reaction to convert methane into useful products, reducing greenhouse gas emissions and energy waste. The innovation could lead to significant energy savings in the oil and gas industry.
Scientists have developed a new method to remove nearly all sulfur compounds from gas and diesel fuel, potentially reducing air pollution. The technique uses a potassium salt to induce chemical reactions that eliminate sulfur, outperforming traditional methods in industrial-scale applications.
Researchers at Duke University developed tiny rhodium nanoparticles that convert carbon dioxide into methane using ultraviolet light, potentially reducing atmospheric carbon dioxide levels. The discovery offers a promising alternative energy source and could be scaled up for industrial applications.
Researchers are discovering new, eco-friendly catalysts in unexpected places, such as earthworm powder and plants that absorb high levels of metals from soil and water. This shift could reduce traditional animal and plant sources, decrease mining waste, and create more sustainable production methods for medicines, fuels, and electronics.
Researchers have successfully delivered a gold catalyst to a target organ in a mouse, enabling in vivo metal-complex catalysis. This innovation paves the way for potential biomedical applications, including therapy and diagnostics.
Chemical engineers and chemists at Pitt and Penn State create a system that utilizes chemical reactions to drive fluid flow, enabling controllable transport of particles and cells. This breakthrough could lead to rapid and efficient chemical assays.
Researchers have developed a new ruthenium-based material, Ru@c?N, that can split water into hydrogen with high efficiency and durability. The catalyst exhibits high turnover frequency and is not affected by the pH of the water, making it suitable for various environments.
Researchers from IBS and Peking University demonstrate how to synthesize horizontal arrays of CNTs with the same structure. The team successfully produces conducting (12, 6) and semiconducting (8, 4) CNTs with high selectivity and purity.
Researchers at Rice University have created single-molecule compounds that quench damaging reactive oxygen species, offering a new basis for antioxidant therapies. The molecules, called PEG-PDI, are true mimics of superoxide dismutase enzymes and show promise for treating cancer, traumatic brain injuries, and chronic diseases.
Researchers developed a novel strategy to synthesize various metal-organic materials, including double-shell hollow MOMs. This approach enables control over particle sizes and shapes, critical for optimizing porous material performance in catalysis, adsorption, and separation processes.
Researchers at MIT and Boston College developed a new type of catalyst that can incorporate trifluoromethyl groups into various organic molecules. This breakthrough enables the rapid generation of potential new fluorinated drugs, including antibiotics and anticancer agents.
A team of UNIST researchers has developed a new method to enhance the catalytic activity of provskite, a potential substitute for platinum in metal-air batteries. By physically mixing provskite with polypyrrole, they were able to achieve a synergistic effect that rivals that of platinum.
Researchers explore electrocatalysis to transform atmospheric molecules into useful products, such as hydrogen and chemicals, for a sustainable future. Effective catalysts are needed to drive the process, but advancements in theory and experiments hold promise.
Researchers at the University of Huddersfield have developed an efficient iron-catalysed C-C bond-forming spirocyclization cascade, providing access to new 3D heterocyclic frameworks. This breakthrough could lead to huge economic gains in pharmaceuticals and agrichemicals.
A special issue of Energy Technology showcases recent advances in pyrolysis technologies, which convert biomass into fuels, chemicals and fertilizers. Iowa State research teams led by Brown and Brent Shanks contributed papers to the issue, exploring topics such as micropyrolyzer equipment and bio-oil processing.
A team of researchers at Berkeley Lab used a unique infrared probe to pinpoint areas on single metallic particles where chemical reactivity occurs. This technique reveals the detailed chemistry occurring on the surface of particles, enabling customization of structural properties for more effective catalysis.
Researchers directly observed how metallic nanoparticles activate catalytic processes by identifying defect sites on the surface of single particles. These findings validate a longstanding hypothesis and provide insights into controlling catalyst reactivity.
Researchers create new catalytic approach to prepare compounds essential to drug discovery with high selectivity and 20 times less solvent than alternative methods. The new strategy was used to prepare the anti-cancer agent pacritinib, which is now in advanced clinical trials.
Researchers at MIT have found that some catalysts produce oxygen from within their crystal structure, contrary to previous assumptions. The study's findings could help fine-tune metal-oxide catalysts for enhanced energy storage processes.
The UNC Catalyst initiative aims to create and share research tools to study rare diseases, addressing the lack of resources and expertise in this area. The partnership with Genetic Alliance and Structural Genomics Consortium will provide researchers with access to necessary tools and talent to accelerate solutions.
Researchers at Southern Methodist University have discovered a new catalyst that can efficiently break the tough molecular bond between carbon and hydrogen. This breakthrough could lead to a cleaner, easier, and cheaper way to derive products from petroleum, with copper-based catalysts showing great promise in oxidizing C-H bonds.
Princeton researchers have discovered a method to expand enzyme reactivity through light activation, allowing access to high selectivities. They successfully catalyzed non-natural reactions, including dehalogenation reactions, by irradiating enzymes with light.
Osaka University researchers have developed a catalyst that efficiently produces hydrogen from organosilanes at room temperature without additional energy input. The catalyst, composed of gold nanoparticles supported on hydroxyapatite, demonstrated high turnover frequency and recyclability.
Researchers at KAUST have developed a simpler way to assemble silver nanoclusters, opening up new opportunities for catalysis and opto-electronics. The clusters can be modified with atom-by-atom control, allowing their properties to be tailored for specific applications.
Researchers at ICIQ have designed a new strategy for stereoconvergent preparation of trans-cyclopropanes from E/Z alkene mixtures. The 'radical carbenoid' method uses diiodomethane as a commercially available and easy-to-handle reagent.
Researchers at Rice University have discovered a simple way to recycle waste carbon dioxide into valuable fuel using nitrogen-doped graphene quantum dots. The dots proved nearly as efficient as copper in converting CO2 into small batches of ethylene and ethanol, with the ability to keep their catalytic activity for a long time.
Researchers developed catalysts with tensile surface strain, improving oxygen reduction reaction activity and stability. The nanoplates showed minimal decay in catalytic activity after 50,000 voltage cycles.
Researchers aim to understand how particle shape influences catalytic activity and design more efficient catalysts for CO2 recycling reactions. The goal is to convert climate gas CO2 into valuable chemicals and fuels.
A research team at the University of Geneva has discovered that sulfur can act as an effective catalyst, transforming molecules with greater precision than hydrogen. This breakthrough enables chemists to exercise increased control over molecular transformations, paving the way for the creation of new materials and applications.
Researchers found that the position of a molecule on a catalytic surface determines the rate of bond breaking. They observed a 100-fold difference in reactivity between bonds aligned along rows and across rows of copper atoms. The discovery could lead to more selective and efficient catalysts.
Researchers used 3D imaging to study nanoscale details of nickel-cobalt particles, revealing a unique 'Swiss cheese' structure that increases surface area and reactivity. The findings could lead to more efficient and cost-effective catalysts for fuel cells.
A new catalyst developed by researchers at the University of Pittsburgh has the potential to solve two problems at once - reducing net carbon dioxide emissions while generating cleaner fuels. The catalyst, which converts CO2 into methanol, could dramatically reduce the cost of carbon capture and conversion.
Researchers have developed a catalyst that flexibly molds reaction product handedness, ensuring correct enantiomeric form. The system's self-amplifying action enhances stereoselectivity with each cycle, holding promise for biologically active compounds and new insights into biological systems.
Researchers at Waseda University have developed a new method for producing hydrogen, achieving temperatures as low as 150~200°C. This innovation reduces energy input and extends catalyst life, making it suitable for widespread use in fuel cell systems.
Researchers at Caltech use directed evolution to persuade bacteria to create silicon-carbon bonds, which are found in pharmaceuticals, agricultural chemicals, and computer screens. The new process has the potential to be more environmentally friendly and less expensive than current methods.
Researchers successfully created a catalyst that efficiently forms carbon-silicon bonds, which were previously thought impossible. The breakthrough enables the production of a wide range of silicon products.
Researchers at Stanford University have developed a new technique to fine-tune metal catalysts at the atomic scale, leading to a significant boost in performance for platinum catalysts used in fuel cells. By compressing or separating atoms by just 0.01 nanometers, they found that platinum's catalytic activity nearly doubled.
Researchers used a combination of measurements to gather detailed information on problematic carbon-based deposits in catalysts, known as coke. They found that uneven distribution of aluminum in zeolite catalysts caused coke buildup, which blocks chemical reactions vital to fuel production and other processes.
A team of organic chemists developed a new reaction to directly install amines into carbonyl compounds, resulting in the rapid formation of optically active α-aminocarbonyls. This method enables access to chiral α-aminocarbonyls from readily available carbonyl compounds and hydroxylamines.
Massive simulations reveal intrinsic disorder and dynamic surface rearrangements in certain polar surfaces, affecting mechanical, catalytic and sensor properties.
Researchers at Ulsan National Institute of Science and Technology (UNIST) have created a new delafossite-based catalyst that converts CO2 into liquid hydrocarbon-based fuels, including diesel. This breakthrough process removes harmful CO2 from the atmosphere and offers a potential solution to reduce greenhouse gas emissions.
A novel Fe-N/C catalyst with a silica-protective-layer approach has shown high oxygen reduction reaction activity comparable to platinum-based catalysts. The research paves the way for the commercialization of hydrogen fuel cells, potentially reducing costs and increasing efficiency.
Researchers have developed a biocompatible heterogeneous copper catalyst that can assemble building blocks in a living system, enabling the creation of anti-tumor drugs. The catalyst was tested in biological systems and found to be effective in stopping cell growth and initiating programmed cell death.
Dr. Wachs' research aims to identify fundamental structure-activity/selectivity relationships for catalysts, guiding the design of advanced catalysts. His team explores direct conversion of natural gas into liquid fuels without oxidizing reagents, offering a promising solution to overcome stranded gas.
Researchers at Berkeley Lab integrated a water-splitting catalyst onto semiconductor to create more stable and efficient artificial photosystems. The composite film successfully supported chemical reactions without damaging sensitive semiconductors, achieving a three-day run time.
Researchers at Kazan Federal University have achieved a significant breakthrough in in-situ combustion, increasing the combustion front speed by 10 times. The team has also developed a new understanding of catalysts' work mechanisms, making them more stable and efficient.
The US Department of Energy's Brookhaven National Laboratory has received three 2016 R&D 100 Awards for its innovative technologies in microscopy, catalysis, and nanomaterials. The lab's custom-built x-ray microscope has advanced imaging capabilities, while the MoSoy Catalyst produces hydrogen in an environmentally friendly way.