Articles tagged with Catalysis
Researchers discovered cesium carbonate generates an aggregate state that acts as the starting point for catalytic reactions. This finding has the potential to impact C-H functionalization reactions and catalytic reaction development.
Researchers developed a hybrid catalyst combining graphene quantum dots and graphene oxide, nitrogen, and boron, outperforming commercial platinum-based catalysts in fuel cells. The new material cuts the cost of generating energy with fuel cells, offering a promising solution to the expensive metal hurdle.
A Wayne State research team is developing new, more efficient catalytic materials to reduce energy consumption in chemical conversion systems. The project aims to create multicomponent catalysts that can improve reaction efficiency and reduce unwanted byproducts.
Researchers have discovered a crucial role of electronic and geometric effects in reducing carbon dioxide using gold-copper bimetallic nanoparticles. This breakthrough could lead to unprecedented improvements in electrochemical carbon dioxide reduction.
Gold nanoparticles work as catalysts to speed chemical reactions despite being inert metals. Researchers have now fully understood the role of water in this process, revealing its crucial role as a co-catalyst for transforming carbon monoxide into carbon dioxide.
Research highlights two types of support in meaningful relationships: source of strength (SOS) support, which helps individuals thrive through adversity, and relational catalyst (RC) support, which fosters full participation in life opportunities. Effective support requires responsiveness and sensitivity.
Scientists at Stanford University have developed a low-cost, emissions-free device that uses an ordinary AAA battery to produce hydrogen by water electrolysis. The battery sends an electric current through two electrodes that split liquid water into hydrogen and oxygen gas.
Researchers discovered that water formation in biofuel conversion slows key chemical reactions, forming an impurity that disrupts the process. The study provides scientific principles to speed up biofuel development, benefiting processes that produce biofuels from plants.
The University of California, Davis's STAIR Grant program provides funding and support for innovative research, allowing selected researchers to generate early proof-of-concept models. The four finalists have been awarded $50,000 each to develop their projects into commercial applications.
Scientists have created a new technique to transform methane-emitting landfill gas into hydrogen, which can be used in fuel cells to generate clean electricity. The breakthrough involves using a highly stable catalyst material that prevents carbon deposition, allowing for more efficient production of hydrogen.
A multi-institutional team has resolved a long-unanswered question about how water interacts with metal oxides. The study reveals two dramatically different pictures of water-metal oxide reactions, one forming amorphous networks on smooth surfaces and the other creating structured domains on hydroxylated surfaces.
Researchers develop a novel fuel cell design that protects sensitive catalysts using a redox hydrogel. This shield prevents deactivation caused by oxygen and extreme electrical potentials, allowing for efficient and long-term energy conversion. The breakthrough has major implications for the development of sustainable energy solutions.
Researchers at Helmholtz-Zentrum Berlin discovered that gold nanoparticles can form small clusters in a solvent made from chicken feed and urea, which enables efficient catalytic reactions. The particles arrange themselves into groups of up to twelve nanoparticles with average diameter of five nanometres.
Scientists at Brookhaven National Laboratory have discovered a new catalytic system for converting carbon dioxide to methanol. The catalyst, composed of copper and ceria nanoparticles, reveals highly reactive sites forming at their interface, enabling the conversion of normally unreactive CO2.
Researchers have synthesized a catalyst that improves their system for converting waste carbon dioxide into syngas, a precursor of gasoline and other energy-rich products. The new catalyst uses molybdenum disulfide and an ionic liquid to reduce carbon dioxide in a chemical reaction, improving efficiency and lowering cost.
Yushan Yan's research team has developed a method to create crystalline porous polymers with large pores and excellent thermal stability. These materials have potential applications in catalysis, separations and energy storage, offering new possibilities for the chemical and petroleum industries.
EPFL researchers have developed a novel method to increase the accessible active sites of metal oxide catalysts in water splitting reactions, resulting in improved catalytic properties. The exfoliation method shows increased rates of up to 4.5-fold compared to conventional methods.
Researchers have developed a novel catalyst that efficiently catalyzes the production of clean-burning hydrogen fuel, outperforming cost-prohibitive platinum and other less-expensive alternatives. The technology, based on carbon nanotubes, could make electrolysis reactions commercially viable using renewable energy sources.
Researchers at SLAC and Stanford have found a way to estimate uncertainties in computer calculations used to speed the search for new materials, improving confidence in discoveries. This technique can be applied to thousands of computational studies across various fields.
Using high-brilliance X-rays, researchers have gained a better understanding of the chemical reactions in fuel cells, leading to the development of more efficient systems. This knowledge will help make large-scale alternative energy power systems more practical and reliable.
Researchers at Ruhr-University Bochum developed a new type of catalyst that can facilitate two opposite reactions: electrolysis of water and combustion of hydrogen with oxygen. This catalyst has the potential to make regenerative fuel cells and rechargeable metal-air batteries more cost-efficient.
Gila Stein, a University of Houston chemical engineer, received an NSF grant to build models explaining lithography systems used for device fabrication. Her research focuses on chemically amplified resists, which are crucial for patterning semiconductor devices in smaller sizes.
Researchers from RIKEN have discovered a mineral-based catalyst that efficiently splits water into oxygen and hydrogen ions at neutral pH. The key to this success lies in synchronizing electron- and proton-transfer timing, which greatly improves the catalytic activity of manganese oxides.
Rice University researchers have successfully developed palladium-gold nanocatalysts that convert glycerol, a waste byproduct of biodiesel production, into valuable chemicals. The catalysts produce a 'Goldilocks' effect, striking the perfect balance between palladium and gold to achieve faster conversion rates.
Researchers at Princeton University have made a groundbreaking collaboration between two areas of research, enabling the formation of previously impossible bonds. The breakthrough uses photoredox catalysis and nickel catalysis to create powerful new reactions with unprecedented efficiency and scalability.
The Center for Molecular Electrocatalysis will receive $3.5 million annually to explore chemical reactions at the core of solar energy and fuel cells. Researchers from multiple disciplines will work to design faster catalysts, split molecular oxygen, and improve hydrogen reactions.
Researchers bridge the size gap to study kinetic behavior of Ag nanocatalysts using SERS, providing real-time reaction information. The stepped surface of etched nanoparticles mimics sub-5-nm environment, increasing active surface atoms' participation in catalysis.
Researchers used in situ TEM to study the evolution of platinum/cobalt nanoparticles during reactions in oxygen and hydrogen gases. They found that cobalt atoms migrate to form a cobalt oxide epitaxial film, which affects catalytic performance.
Researchers from ETH Zurich have identified a new class of zeolite catalysts that can withstand the formation of hydrocarbon deposits, which clog pores and block active sites. The key to their improved performance lies in the internal structure of the catalysts, with well-connected nano-sized channels and numerous openings.
Researchers have developed a new nickel catalyst that catalyzes the cross-coupling reaction between carbonyl compounds and phenol derivatives to form alpha-arylketones, which are found in many biologically active compounds. The study has potential applications in synthesizing biologically active molecules and organic materials.
A metal-organic framework (MOF) has been found to catalyze the conversion of ethane from natural gas into ethanol, a process previously thought to require complex biological steps. The discovery showcases the potential for laboratory-made materials to mimic nature's processes.
Researchers identified a mutated enzyme called LovD9 that produces simvastatin 1,000 times more efficiently than the natural enzyme. The team used computer simulations and X-ray crystallography to determine the molecular structures of both enzymes, revealing subtle variations in their behavior when immersed in water.
Scientists at Ames Laboratory have developed a nanoparticle that can perform two processing functions at once for green diesel production. Using iron as the catalyst reduces costs and improves efficiency, making it a promising alternative to traditional biodiesel production methods.
Researchers at EPFL used lasers to study how specific vibrations in a water molecule affect its ability to dissociate, enabling the optimization of theoretical models for water dissociation. This breakthrough can impact the design of future catalysts for industrial and commercial chemical reactions.
Researchers at University of Wisconsin-Madison develop a dual-catalyst technique using sunlight to control the 'handedness' of product molecules, overcoming UV's limitations. This breakthrough enables easier synthesis of complex chemicals with well-defined chirality.
Researchers have successfully captured a view of a molecular catalyst that converts hydrogen into electricity, confirming previous hypotheses and providing insight into its structure. The study's findings offer potential improvements to hydrogen-powered fuel cells, which could be more expensive but also carbon-neutral.
Researchers have found a novel electrode made of oxide-derived copper that can efficiently convert carbon monoxide into liquid ethanol. The discovery could provide an eco-friendly alternative to conventional ethanol production, which relies on land- and water-intensive crops like corn.
Syracuse University chemists discover enzyme-like activity in seven amino acid peptides, shedding light on the origins of life and potential new catalysts for metabolic reactions. The breakthrough supports the theory that amyloid fibrils may have triggered early forms of life.
A UIC chemistry professor has been awarded a prestigious international sustainability grant to lead the US effort in developing novel catalytic methods. The project aims to replace rare metals with inexpensive and abundant metals, reducing environmental pollution and resource depletion.
Chemists at the University of Utah discovered a method to predict chemical reactions using bond vibrations, which can lead to more efficient catalysts for medicines, industrial products, and new materials. The researchers used infrared spectroscopy to analyze bond vibrations and built a mathematical model to predict reaction outcomes.
Researchers at JCAP have developed a new hybrid material that stores nearly 90% of the electrons generated by solar energy in hydrogen molecules. This breakthrough could address one of the major challenges in using artificial photosynthesis to produce renewable solar fuels. The material, which combines gallium phosphide and cobaloxime ...
Researchers at the University of Vienna developed a new, atom-economical chemical synthesis for α-arylated Carbonyl derivatives. The method eliminates the need for additional reagents, reducing product contamination and labor-intensive reaction conditions.
Researchers have identified two intermediate steps in water oxidation reactions using an Earth-abundant solid catalyst, cobalt oxide. This discovery provides a better understanding of the individual events in the four-electron cycle and enables the design of improvements to boost efficiency.
Scientists at Stanford University have developed a new, potentially clean catalyst that can convert hydrogen and carbon dioxide into methanol with fewer side-products. The nickel-gallium catalyst offers promise for low-cost, low-pressure methanol production using renewable energy sources.
Researchers at Berkeley and Argonne National Labs developed a new class of bimetallic nanocatalysts, hollow polyhedral nanoframes of platinum and nickel, which feature a three-dimensional catalytic surface activity. These catalysts are significantly more efficient and far less expensive than the best platinum catalysts used in today's ...
A UConn team developed a novel process creating monomodal mesoporous metal oxides with uniform pores, allowing targeted molecules to flow in and out of the material. This 'green' technology has significant applications in adsorption, sensors, optics, magnetic, and energy products.
Researchers mapped catalytic reactivity inside a microreactor in high resolution from start-to-finish using infrared and x-ray light. The study revealed opportunities for optimization, resulting in better catalytic performances.
Researchers at University of Wisconsin-Madison developed new, oxide-based materials to split water into hydrogen and oxygen gases using solar energy. The dual-layer catalyst design enabled a record high efficiency of 1.7%, making it possible to produce fuel at a price competitive with gasoline.
Researchers at Georgia Tech have developed a low-temperature fuel cell that directly converts biomass to electricity using a catalyst activated by solar or thermal energy. The device can use various types of biomass, including starch, cellulose, and switchgrass, and operates for up to 20 hours without needing purification.
A new X-ray method allows researchers to determine the atomic structure of material surfaces, enabling deeper understanding of catalytic behavior at the atomic level. The method reduces analysis time from ten hours to just ten minutes, paving the way for optimized catalyst design and improved reaction control.
Researchers have developed a novel X-ray technique that enables the rapid determination of atomic surface structures and live recordings of surface reactions like catalysis and corrosion. This breakthrough paves the way for designing better catalysts and materials on an atomic level.
Researchers at the University of Delaware have developed a highly selective catalyst that can convert carbon dioxide to carbon monoxide with 92 percent efficiency. The nano-porous silver electrocatalyst offers high selectivity and is significantly more active than other catalysts, making it a promising route for clean energy.
Researchers in India have developed a low-temperature process to convert LDPE into liquid fuel, releasing carbon-rich molecules that are similar to conventional petrochemical fuels. The process uses kaolin catalyst and can produce up to 700 grams of liquid fuel per kilogram of waste plastic.
Researchers from Stanford University and Aarhus University develop a cheap alternative to platinum-based electrolysis for producing hydrogen, a crucial component in fertilizer production. The new method achieves efficiency comparable to platinum-based systems while reducing costs.
Researchers at North Carolina State University have developed a new method for producing cheap hydrogen using atomic-scale catalysts made of molybdenum sulfide (MoS2). The study found that the thickness of the MoS2 film is crucial to its catalytic performance, with thinner films being more conductive and effective as catalysts.
University of Houston researchers aim to develop a method to convert methane, the main component of natural gas, into more valuable chemicals like methanol, ethane, or ethylene. The breakthrough could have significant economic and industrial value.
Researchers at Argonne National Laboratory have found a more efficient way to link a synthetic cobalt-containing catalyst to an organic light-sensitive molecule, increasing hydrogen generation from sunlight and water. The discovery uses a new mechanism that allows the reaction to continue significantly longer.
Researchers at EPFL have developed a high-efficiency, scalable method for creating solar-powered water splitting devices using molybdenum sulfide and copper(I) oxide. The new catalyst preserves optical transparency, stability under acidic conditions, and reduces maintenance costs.
A UT Arlington chemist has discovered that mutations outside the CDO enzyme's outer coordination sphere can lead to high levels of ROS, increasing the likelihood of age-onset diseases. The findings could be applied to other oxygen-dependent enzymes, potentially screening for genetic dispositions for ROS-related diseases.
Researchers combined two catalytic reactions to produce highly reactive boron-containing compounds from inexpensive chemicals, expanding the applications of alpha-olefins and enabling efficient production of important therapeutics like phenethylamines and pregabalin.