Articles tagged with Catalysis
Researchers have solved the first three-dimensional structure of a deoxyribozyme, a flexible DNA molecule that can act as an enzyme. This breakthrough challenges the long-held perception of DNA's stiffness and has significant implications for understanding molecular reactions and potential applications in medicine.
A new study by SISSA/CNR IOM scientists reduces wastage of expensive catalysts used in fuel cells, allowing for more efficient and sustainable energy production. The researchers created nanoparticles on nanosteps, which remain dispersed and stable, enabling the material to be reused with lower costs.
A new catalyst, made from palladium and tin, can efficiently produce hydrogen peroxide on demand, making it accessible to underdeveloped regions. This process overcomes the challenge of decomposing the product into water quickly after production.
Researchers at Cardiff University have developed a new group of catalysts that can produce hydrogen peroxide on-demand in a simple one-step process, opening up possibilities for manufacturing the chemical in remote areas. The production of hydrogen peroxide is essential for water purification and could significantly reduce costs.
Researchers developed a framework to address uncertainty in mathematical models by considering the effects of correlated parameters. This approach improves model predictability and reliability, with applications in fields such as catalysis, combustion, environmental sciences, and biology.
Scientists at Nagoya University have made a breakthrough in synthesizing cyanohydrins, useful molecules that are precursors to carboxylic acids and amino acids. The new method uses a chiral catalyst to produce optically active cyanohydrins with high yield and efficiency.
A team of international researchers synthesized large quantities of pure georgeite, a rare copper-hydroxycarbonate mineral. They found that the georgeite was an excellent catalyst precursor for two important reactions in the chemical industry, outperforming commercial catalysts.
Researchers found that graphene efficiently shields chemical interactions by covering surface defects, reducing reactivity. This shielding enables controlled selectivity and activity of supported metallic catalysts on carbon substrates.
For the first time, researchers have directly converted carbon dioxide from the air into methanol at relatively low temperatures. This process uses renewable energy to transform the greenhouse gas into a clean-burning fuel for internal combustion engines and fuel cells.
Researchers at Kazan University have developed catalysts that speed up heavy oil extraction under the conditions of in-situ combustion. The study, published in Energy and Fuels, shows promise for increasing efficiency in extracting heavy oil from Russia's vast reserves.
Researchers have explained why platinum nanoclusters facilitate the hydrogenation reaction used to produce ethane from ethylene. The shape of these small clusters dramatically affects reaction efficiency, contradicting macro-scale observations. The findings may apply to other catalysts and reactions at the nanoscale.
Scientists have discovered the molecular mechanism behind thyX's role in enabling diseases to reproduce. The finding could lead to the creation of non-toxic antibiotics that block the chemical reaction involving thyX. Several deadly diseases rely exclusively on thyX for survival and reproduction.
Researchers at TUM and Georgia Institute of Technology found that the size of platinum catalyst particles significantly affects reactivity, with clusters having fewer atoms showing lower activity. The discovery could lead to more efficient production of margarine and other chemicals, as well as new materials.
Researchers at Rice University and Swansea University have developed a two-step process using microwaves and chlorine to remove iron catalyst residues from carbon nanotubes. This method makes the nanotubes more pristine and suitable for applications such as drug delivery and solar panels.
Researchers at the University of Tsukuba identified the catalytic structure and proposed a mechanism for non-platinum oxygen reduction catalysts, showing that pyridinic nitrogen is key to its performance. The study's findings will enable optimization studies to focus on improving catalyst efficiency.
Scientists at the University of Illinois have discovered a new mechanism for directly synthesizing hydrogen peroxide from hydrogen and oxygen gases using palladium cluster catalysts. This breakthrough provides insight into the formation of H2O2, which can be used as an environmentally benign alternative to chlorine.
Researchers at the University of Delaware have developed a low-cost nickel-based catalyst that can power fuel cells with unprecedented efficiency. This breakthrough could make hydrogen fuel cell cars truly affordable, potentially priced around $23,000 for a Toyota Mirai.
Researchers at TSRI have devised a new method for building potential drug molecules and organic compounds more efficiently and selectively. Amino acids can act as catalytic directing groups, streamlining the process and reducing reagent usage.
Researchers at Princeton University create a method to selectively radiolabel compounds with tritium atoms, allowing for the study of drug metabolism and potential development speedup. The technique uses an iron-based catalyst that can tolerate various solvents, enabling the tracking of drug breakdown in the body.
Researchers at NREL have developed a new approach to producing hydrogen using solar energy, which uses molecular catalysts instead of precious metals. The new method showed comparable activity to metal-based catalysts and has the potential to be scalable and cost-effective.
Researchers at Indiana University have developed a highly efficient biomaterial that catalyzes the formation of hydrogen gas from water. The material, called P22-Hyd, is produced through a simple fermentation process at room temperature and has potential to replace platinum-based fuel cells.
Researchers at Boston College have developed a new type of cross coupling chemical reaction using a third reactant, expanding on the pioneering Suzuki-Miyaura coupling method. The resulting 'conjunctive' reaction takes place efficiently and offers high selectivity.
Researchers at NREL have developed a new photoelectrochemical process for producing hydrogen that uses molecular catalysts instead of precious metals. The new method is more efficient and cost-effective, making it a promising solution for scalable hydrogen production.
Scientists found that nickel N-heterocyclic carbene (NHC) complexes decompose into initial reagent and nickel hydroxide when exposed to water. The rate of hydrolysis varies depending on the type of NHC ligand, with some complexes breaking down quickly while others remain stable for over a week.
Researchers at FAU and University of Barcelona discovered that platinum nanoparticles lose approximately every tenth electron when in contact with oxide support. This effect can be controlled using theoretical methods, allowing for more efficient catalytic processes and new electronic components.
Researchers at Washington State University developed a catalyst that easily converts bio-based ethanol to isobutene, a widely used industrial chemical. The breakthrough could help reduce environmental impacts and meet new regulations for sustainability in the chemical industry.
Researchers at Princeton University have developed a novel two-component catalyst system that performs the dehydrogenation reaction at room temperature. This method produces hydrogen gas and an alkene molecule without requiring high temperatures or precious metals, opening up new possibilities for chemical transformations.
Researchers have discovered a new approach to producing cleaner diesel by optimizing molecule interactions between metal and solid-state acid catalysts. This method can significantly reduce particulates and CO2 emissions from cars.
A study by University of Pittsburgh researchers outlines a framework for developing catalysts that convert excess CO2 into liquid fuel. The catalyst's effectiveness is determined by its hydrogen adsorption energy and Lewis pair hardness, allowing for more efficient and inexpensive production.
Scientists have reported a high-performance nanoparticle electrocatalyst for fuel cells, featuring durable and active PtFe nanoparticles coated with nitrogen-doped carbon shells. This breakthrough could lead to the development of more efficient and affordable fuel cell technology.
A UMass Amherst chemist has received a $330,000 NSF grant to improve the production of fuels from plant biomass. The project aims to optimize shape-selective catalysis in zeolites for efficient conversion of carbohydrates into gasoline.
A research team at the University of Rochester has developed a new catalyst that selectively converts ethanol to butanol with near total conversion efficiency. Butanol is a more efficient and less volatile alternative to gasoline, yielding more energy and causing less engine damage.
Researchers at Rice University have created nanoparticles that can function as both catalysts and plasmonic sensors. These tiny octopods, composed of gold and palladium, enhance chemical reactions while retaining their optical properties. This breakthrough may lead to more efficient industrial processes and sun-driven chemical reactions.
Rice University scientists have developed a metal-free process to synthesize dozens of organocatalysts, which promise to speed up the making of novel chemicals, including drugs. The new tools eliminate the need for transition metals and simplify chemical processes.
Atomic-level imaging of catalysts using ORNL microscopy has enabled the tracking of atomic reconfigurations in individual platinum-cobalt nanoparticle catalysts during heating. This study provides valuable insights into the evolution of specific atomic configurations and their impact on catalytic performance.
Researchers have developed two new catalysts effective in removing trichloroethylene, a carcinogenic compound found in tap water, through hydrodechlorination. The catalysts, cheaper and more efficient than existing ones, enable a wider use of the reaction to purify water.
A new palladium-based catalyst has been developed to efficiently convert thiols, the source of strong-smelling mercaptans, into stable and useful vinyl thioethers. The catalyst enables the atom-economic synthesis of these monomers with high yield and selectivity.
Scientists at the University of South Carolina have created a new catalyst that efficiently converts CO2 into carbon monoxide, a potential fuel source. The nitrogen-doped carbon nanotubes are more stable and cost-effective than traditional metal-based catalysts.
The new catalyst developed by researchers at Oak Ridge National Laboratory features unprecedented selectivity and a conversion rate nearly twice that of conventional catalysts. This breakthrough enables the selective oxidation of cyclohexane to produce nylon precursor with increased efficiency.
Researchers at Rice University have created a novel, solid-state catalyst that splits water into hydrogen and oxygen, promising lower-cost alternatives to expensive platinum catalysts. The catalyst, made from nitrogen-doped graphene and cobalt atoms, shows high efficiency and durability in generating clean energy.
Researchers at the University of Illinois have developed a manganese-based catalyst that combines high reactivity and selectivity, enabling chemists to install nitrogen into carbon-hydrogen bonds with greater ease. This breakthrough has the potential to accelerate drug discovery and development, reducing costs and increasing efficiency.
Researchers at Tufts University have discovered a new generation of platinum-copper catalysts that can selectively hydrogenate butadiene, a chemical produced in large quantities. The catalysts require low concentrations of platinum and are more cost-effective than traditional palladium-based catalysts.
A new concept correlates geometric and adsorption properties in catalyst design. Researchers developed a platinum-based catalyst for fuel cell applications, showing up to three and a half times greater catalytic activity than existing ones.
Scientists at the University of Delaware have discovered a novel structure for bimetallic catalysts, which offer improved performance and ease of synthesis. The 'patched' surface exhibits dual active sites, enabling more efficient chemical reactions.
Researchers at Sandia National Laboratories have developed a new, efficient catalyst using molybdenum disulfide that can produce four times the amount of hydrogen as before. The catalyst's action can be triggered by sunlight, making it an off-the-grid means of securing hydrogen fuel.
Researchers have developed a high-speed electron tomography technique that sets new standards for 3D imaging of the nanoworld. The method enables visualization of dynamic processes and structures with sub-nanometre precision, opening up new horizons in life sciences and soft matter research.
Researchers found that flipping the molecular attachments on an iridium hydride catalyst improves its ability to transform CO2 into formate and carbon monoxide, two precursors for methanol production. The study offers insights into designing more effective catalysts for a carbon-neutral society.
Researchers at Aarhus University are working with international partners to find ways to convert CO2 into valuable materials. The goal is to make CO2 a sustainable resource, potentially even using it as a raw material for future manned missions to Mars.
A recent study by Leibniz Institute for Tropospheric Research and Institute of Catalysis and Environment in Lyon reveals that oceans produce significantly more isoprene, a gas formed by both vegetation and oceans. This finding suggests that the climate models need to be improved to accurately predict temperature and precipitation changes.
Researchers at the National Institutes of Natural Sciences have developed stable, crystalline, porous covalent organic frameworks (COFs) that can be used as platforms for functional exploration. The COFs exhibit enhanced catalytic activity and enantioselectivity in asymmetric Michael reactions.
Researchers developed a rotaxane gold catalyst with enhanced properties, which can be controlled by adding acid or metal ion cofactors. The catalyst's shape changes with different ions, leading to varied reaction products and suggesting a potential method for tailoring catalysts.
A new catalyst developed by Michigan Technological University researchers has improved the sensitivity of the PSA test for prostate cancer detection. The palladium-iridium catalyst is 110 times more sensitive than traditional peroxidase-based tests, reducing false negatives and potentially delaying treatment.
A novel model enables fast prediction of novel alloy materials, significantly accelerating materials discovery in the field of catalysis. The approach uses machine learning to capture complex interactions of molecules on metal surfaces.
A team of researchers at the University of Wisconsin-Madison has discovered a highly efficient catalyst that can produce hydrogen using common elements like phosphorus and sulfur. The new catalyst, which is nearly as efficient as platinum, could make a significant impact on the transition to a hydrogen economy.
Researchers have developed a new mixed oxide catalyst that overcomes inhibition issues, allowing for more efficient engines to meet stricter emission regulations. The unique formulation of copper oxide, cobalt oxide, and cerium oxide enables better oxidation activity at low temperatures without precious metals.
Researchers at Cardiff University have devised a way of increasing the yield of biodiesel by using the waste left over from its production process. By recycling crude glycerol, they can convert it into methanol, which is then used as a starting reactant to create more biodiesel.
Researchers at UMass Amherst aim to develop a reliable, predictive computational framework for designing better-performing materials with reduced development costs. The new approach will address challenges in handling complex systems with millions of variables, rare events, and multi-scale features.
Washington State University Tri-Cities associate professor Hanwu Lei received a $494,000 grant to research catalysts for high-energy biofuels. He aims to convert biomass into aromatic hydrocarbons with industrial applications.
Researchers at California Institute of Technology have developed an artificial leaf that can harness sunlight to produce hydrogen fuels, achieving a high efficiency rate. The system consists of three components: photoanode, photocathode, and membrane, which work together to split water molecules into oxygen and hydrogen gas.
Researchers at Rice University have developed a way to embed metallic nanoparticles into laser-induced graphene, creating a useful catalyst for fuel cells and other applications. The material, called metal oxide-laser induced graphene (MO-LIG), has shown promise as a potential substitute for expensive metals like platinum.