Articles tagged with Catalysis
A University of Houston researcher is exploring electron oscillation in porous gold nanoparticles to harness their energy. The goal is to enhance catalytic reactions and boost biosensing, potentially leading to ultrasensitive detection of disease biomarkers.
Indiana University chemists Steven Tait and Kenneth Caulton will develop new catalysts for molecular transformations using surface chemistry and metal-organic chemistry. Their goal is to convert environmentally harmful CO2 molecules into carbon-neutral plastics, building materials, and fuel.
Researchers at Princeton University, MIT and Merck & Co. have developed a cheap, complementary approach to the fundamental chemical reaction known as C-N bond coupling. The direct, cost-effective method enables efficient production of anilines, a common structure in medicinal agents, without expensive ligands.
Researchers have devised a method to recycle millions of tons of plastic garbage into liquid fuel by breaking down polyethylene with alkanes. The process is more efficient and milder than current methods, using readily available substances from oil refining.
Chemists at Berkeley Lab have successfully created a bionic enzyme by replacing iron in muscle protein with iridium, enabling a new type of chemical reaction. The discovery opens the door to converting complex structures in biomass and natural gas into higher-value materials and molecules for pharmaceuticals.
Researchers have designed a molecular catalyst that produces only hydrogen and carbon dioxide when formic acid is decomposed at a low temperature. This breakthrough could pave the way for hydrogen-powered cars by overcoming one of the major challenges: efficient production of clean energy.
Researchers at the University of Delaware have developed a new process that triggers targeted reactions using red or near-infrared light or a tiny dose of an enzyme. This breakthrough has significant implications for medicine and engineering, particularly in drug delivery and tissue engineering.
Researchers at ETH Zurich successfully upgraded methane into methyl bromide, a base material for fuels and chemicals, through oxybromination chemistry. The new catalyst, vanadium phosphate, enables closed-bromine recycling, making the process more efficient and environmentally friendly.
Researchers at the University of Wisconsin-Madison have discovered a new way to synthesize hydrogen peroxide in a single step, which could make it an economically feasible oxidant for various chemical processes. The method uses a palladium-based catalyst and avoids the decomposition reaction that typically occurs during synthesis.
Researchers at Osaka University have developed a method to form bonds between two butadiene molecules, an alkyl group, and benzene rings using a cheap nickel catalyst. This technique enables the synthesis of high-value terminal olefins from cheap butadiene, which can be used in various industrial applications.
Scientists have developed two new molecular catalysts that can drive the key oxygen-oxygen bond-formation step in water oxidation, a crucial process for artificial photosynthesis. These ruthenium complexes enable faster and more efficient water oxidation, potentially leading to the creation of clean fuels from solar energy.
Researchers have developed a method to analyze the electronic states of iron(II) in aqueous solution, revealing new insights into its interactions with surrounding solvent. This breakthrough could improve our understanding of electron interactions in catalytic and functional materials.
Scientists at the University of Würzburg have developed a supramolecular ruthenium macrocycle that mimics photosystem II, improving water oxidation efficiency and reducing carbon dioxide emissions. The new catalyst enables the production of high-energy-density fuels like hydrogen, methane, or methanol.
A team of researchers at ICIQ has designed and synthesized highly selective and effective Englerin analogues that inhibit the growth of renal cancer cells. The analogues were developed using gold catalysis and exhibited potent anti-cancer activity in cell lines, offering a promising treatment option for patients with kidney cancer.
Researchers develop a new method to convert waste cooking oil into biodiesel, reducing production costs and increasing efficiency. The process involves heating the oil with catalyst-coated beads in a microwave oven, resulting in a nearly 100% conversion rate.
Researchers developed a new composite catalyst using nitrogen-rich graphene dotted with copper nanoparticles that can convert carbon dioxide to ethylene efficiently and selectively. The study showed a selectivity of 79 percent for ethylene production, significantly higher than other approaches.
A team of chemists has developed a new method to make metal nanoframe catalysts, which could lead to improved hydrogen fuel production and reduced usage of precious materials. The breakthrough involves creating ruthenium nanocrystals with a unique crystal structure, increasing their surface area and catalytic activity.
A team of Korean researchers has successfully developed a way to fabricate an ultralight, high-density nanoporous gold material, known as Black Gold. This new material is twice as solid and 30% lighter than standard gold, with a wider surface area due to its unique nanostructure.
Researchers create a borylation reaction using methane, enabling the production of complex molecules like pharmaceuticals without releasing greenhouse gases. The study aims to reduce reliance on fossil fuels and promote sustainable use of abundant natural gas.
A team of chemists, led by Mu-Hyun Baik, has achieved the first-ever efficient activation of methane's C-H bond using a hybrid computational-experimental approach. The method enables the conversion of methane into liquid methanol, paving the way for petroleum independence and alternative fuel production.
Researchers at the University of Toronto have designed the world's most efficient catalyst for storing energy in chemical form. The new catalyst enables the efficient conversion of sunlight into hydrogen, which can be converted back into energy using hydrogen fuel cells. The study demonstrates a more efficient and highly scalable means...
Researchers have developed a stable and conductive protective layer for the 'artificial leaf' that enhances water oxidation efficiency. The innovative layer, made from ruthenium dioxide nanoparticles and an organic polymer, improves current densities and stability.
Scientists at Helmholtz-Zentrum Berlin developed a protective layer for the 'artificial leaf' that converts 12% of incident solar energy into hydrogen. The new layer, made from graphene, enables stable and efficient water splitting.
Researchers have successfully increased water electrolysis efficiency by applying a copper layer to platinum electrodes. This innovation boosts the reaction's activity and extends electrode lifespan. The breakthrough could lead to large-scale implementation of climate-friendly energy conversion using surplus electricity.
Researchers developed a new photocatalyst system boosting hydrogen production by up to 3.5 times, using ferrite to enhance charge carrier separation and oxidative reaction kinetics.
Researchers at Kyushu University have developed a new method for creating uniform, highly active gold nanoparticle catalysts for fuel cells. The novel approach involves wrapping a graphene support in a specially prepared polymer, resulting in the lowest overpotential ever reported for this type of reaction.
Researchers at Australian National University have successfully controlled chemical reactions using static electricity, improving reaction rates by a factor of five. The breakthrough could lead to cleaner industry, cheaper nanotechnology, and unprecedented control over chemical processes.
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.
Researchers at the University of Huddersfield have pioneered sugar-powered catalysis, which could revolutionize industries such as agro-chemistry and pharmaceuticals. By harnessing the reducing potential of renewable sugars, scientists have developed a cost-effective and environmentally friendly method for catalysis.
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.
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.
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 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 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 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 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 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 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 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.