Articles tagged with Catalysis
Researchers observed accelerated hydrogen spillover via surface-lattice-confinement effect on MnO and Mn3O4 monolayers. This acceleration was found to be up to four times faster than on Mn3O4, with a uniform O-O distance favoring hydrogen diffusion.
Researchers at Hokkaido University have developed a new method using cooperating catalysts to perform challenging dearomative carboxylation reactions. This process enables the production of α-amino acids, which are potentially useful for drug development, and offers greater freedom in designing and synthesizing molecules with carboxyl ...
Researchers developed a machine learning model using advanced 2D chemical descriptors to predict highly selective asymmetric catalysts without quantum chemical computations. The model demonstrated high accuracy in predicting catalyst structures and selectivity, outperforming existing methods.
A team of international researchers has developed a novel Co-N-C catalyst for electrochemical hydrogen peroxide synthesis. Their work offers a promising solution to produce H2O2 efficiently and sustainably. The study demonstrates the power of theory-guided research in accelerating the discovery of efficient electrocatalysts.
Researchers have developed a novel catalytic approach to synthesize monocyclic 3-(pyrrol-1-yl)-azetidin-2-ones, which show potential as therapeutic agents. The method yields all four diastereomers with high selectivity and has been published in Current Organocatalysis.
Researchers at Boston College have developed a new catalytic approach that enables concurrent control of multiple convergences and selectivities in intermolecular amination of allylic carbon-hydrogen bonds in alkenes. The cobalt-based system exploits unique features of homolytic radical reaction to form desired amine products in a high...
Researchers have created a new type of polymer that can be triggered by light, enabling faster chemical reactions and more efficient energy use. The polymers, which respond to different wavelengths of light, show promise for use in various fields, including pharmaceuticals and future Mars habitats.
A new hybrid catalyst converts CO2 into ethylene in one pot, using abundant earth materials. The catalyst achieves high efficiency in CO2 reduction to CO, with up to 60% conversion rate to ethylene.
Researchers have discovered a new form of carbon, LOPC, which consists of 'broken C60 cages' connected by long-range periodicity. The formation of LOPC occurs under specific temperature and carbon/Li3N ratio conditions, and its characterization reveals unique electrical conductivity properties.
Researchers discovered that positively charged micelles can significantly accelerate chemical reactions between like-charged molecules. By controlling the magnitude and spatial distribution of the electric charge on catalysts, reaction rates can be tuned within several orders of magnitude.
Rice University scientists identified a new Diels-Alderase enzyme, CtdP, which catalyzes the Diels-Alder reaction with precise stereochemistry control. This discovery could lead to improved pharmaceutical synthesis and development of more effective drugs.
A team of researchers from GIST created a protection layer for nickel-iron catalysts using tetraphenylporphyrin, increasing their life and performance. This innovation reduces the dissolution of iron atoms during oxygen evolution reactions, resulting in prolonged hydrogen production.
A germline mutation of topoisomerase II B affects the movement of proteins in the nuclei of cells with this mutation. The study reveals that the mutation impacts nuclear dynamics and provides a platform to understand the biological relevance of such mutations.
Scientists at Ruhr-University Bochum develop a technique to create complete five-element material systems on a carrier roughly the size of a human hair. This enables them to efficiently search for new catalysts with high catalytic activity, crucial for environmentally friendly energy conversion processes.
Researchers at City University of Hong Kong have developed a lead-free perovskite photocatalyst for highly efficient solar energy-to-hydrogen conversion. The study uncovers the interfacial dynamics between halide perovskite molecules and electrolytes, enabling better photoelectrochemical hydrogen generation.
Researchers at Brookhaven National Laboratory have successfully discovered new materials using artificial intelligence and self-assembly. The AI-driven technique led to the discovery of three new nanostructures, expanding the scope of self-assembly's applications in microelectronics and catalysis.
A study reveals the mechanism behind a selective switch from ethylene to acetate production in high-rate CO2/CO electrolysis. Researchers found that *CO coverage and local pH induced this switch, with acetate formation favored at high *CO coverage and high local pH.
Researchers discovered a new enzyme with molecular protection against oxygen, increasing its resistance by genetic modification. This breakthrough aims to improve protein dynamics and control inorganic centre reactivity for carbon-neutral hydrogen production.
A team at City University of Hong Kong has developed a novel approach to converting environmental temperature fluctuations into clean chemical energy using pyroelectric catalysis. By combining pyroelectric materials with localized plasmonic heat sources, the researchers achieved significantly faster and more efficient pyro-catalytic re...
Scientists have discovered a new form of carbon, LOPC, formed by heating fullerenes with lithium nitride. The new carbon consists of 'broken C60 cages' connected with long-range periodicity, exhibiting unique electrical conductivity properties.
Scientists develop macroporous structure to increase accessibility of active sites in single-atom catalysts, achieving high activity in oxidative esterification of furfural. The composite catalyst shows high stability and potential for industrial application in biomass valorization and pharmaceutical manufacturing.
Researchers at Ruhr-University Bochum develop base metal oxide nanoparticles that improve the water splitting process for green hydrogen production. Cubes outperform spheres as catalyst particles, increasing activity and efficiency.
University of Minnesota researchers develop groundbreaking new catalyst technology to convert renewable materials like trees and corn into acrylic acid and acrylates used in paints, coatings, and superabsorbent polymers. The new catalyst substantially reduces costs and increases yield, paving the way for lower-cost renewable chemicals.
Scientists at the University of Adelaide have developed a new synthesizing approach to produce customized single-atom catalysts (SACs) using 3D printing techniques. SACs can be tailored for various industrial applications and offer a more cost-effective and simpler alternative to current approaches.
A team led by prof. Sashuk created a semirotaxane molecule that can control the position of another molecule on its axis, regulating the rate of a particular chemical reaction. When exposed to blue light, the system accelerates the C-N coupling reaction by up to 5.4 times.
Research team led by Prof. Lin Zhuang found that guanine modification boosts CH4 production and suppresses C2 product formation in electrochemical CO2 reduction. The results suggest a direct correlation between surface proton transfer capability and CO2 reduction selectivity.
Researchers have developed a new method for recycling high-density polyethylene (HDPE) into fully recyclable and biodegradable material. The approach uses catalysts to cleave polymer chains, reducing carbon emissions and pollution associated with HDPE.
Researchers from City University of Hong Kong developed a novel device-engineering strategy to suppress energy conversion loss in organic photovoltaics, achieving PCE over 19%. The discovery enables OPVs to maximize photocurrent and overcome the limit of maximum achievable efficiency.
Researchers have developed a nano-scale platinum-cobalt alloy to reduce the need for rare and expensive platinum in hydrogen fuel cells, enhancing performance and stability. The new alloy achieves superior results at lower costs, paving the way for wider adoption of fuel-cell technology.
Researchers at the University of California, Riverside, have created a novel method to break down per- and polyfluoroalkyl substances (PFAS), also known as 'forever chemicals', in contaminated water. The hydrogen-infusion and UV light-based process achieves high molecular destruction rates without generating unwanted byproducts.
Researchers at USTC developed a new strategy for synthesizing axially chiral allenic compounds, achieving high enantiopurity and stereoselectivity. The method involves nickel-catalyzed asymmetric propargyl substitution and Myers rearrangement reactions.
Researchers have developed a low-cost way to extract gold and other valuable metals from electronic waste, which can be used as catalysts for reactions in pharmaceutical manufacture. The process has the potential to improve the sustainability of drug production by reducing dependence on environmentally damaging mining practices.
A new study by Bayes Business School found that co-working spaces can initially support collective exploration but ultimately inhibit collaborative practices. The study suggests that firms leave the space as interactions become less meaningful and stilted over time.
Researchers at the University of Münster developed a new way to produce vicinal diamines, which are crucial for biologically active molecules and drugs. The process uses light energy from blue LEDs to produce these unsymmetrically constructed compounds without using transition metals.
A University of Ottawa-led team identified a new entry route for SARS-CoV-2 using metalloproteinases, which may lead to more widespread cell infection and severe illness. The study suggests that variants like the Delta strain may prefer this entry method, while others like Omicron do not.
A new study pinpoints the first-ever domestication of cats to nearly 10,000 years ago in the Fertile Crescent region. Genetic analysis reveals that humans' transition from hunter-gatherers to farmers sparked the bond between humans and rodents-eating cats, leading to their migration with humans worldwide.
The new monochromator optics increase photon flux in the tender X-ray range by a factor of 100, allowing highly sensitive spectromicroscopic measurements with high resolutions. This enables data collection on nanoscale materials, such as catalytically active nanoparticles and modern microchip structures, for the first time.
Researchers have discovered that nanodiamonds can emit solvated electrons in water when exposed to visible light, a crucial step towards using them as photocatalysts. This discovery could lead to the development of inexpensive and metal-free processes for converting CO2 into valuable hydrocarbons or converting N2 into ammonia.
Researchers at KAUST have developed a soft and flexible electronic 'e-skin' that can detect minute temperature differences between inhalation and exhalation, as well as touch and body motion. The material's island-bridge atomic structure provides an inherent softness and flexibility ideal for on-skin applications.
A Japanese research team successfully constructed the first polymeric Weaire-Phelan structure, a previously theoretical form predicted to be the most efficient solution for a century-old tessellation problem. The structure was achieved through a novel polymerization-induced phase separation method.
Researchers developed a small molecule-assisted impregnation approach to synthesize carbon-supported platinum intermetallic fuel cell catalysts. The optimal additive, sodium thioglycolate (STG), suppresses PtCo sintering by coordinating with Pt and Co to form precursors.
Researchers have developed a chemical-biological method to upcycle polyethylene waste into valuable and complex compounds of pharmacological interest. Genetically engineered fungi convert carboxylic diacids derived from PE waste into natural products, including asperbenzaldehyde, citreoviridin, and mutilin.
Researchers at Princeton and Rice universities developed a low-cost technique to split hydrogen from liquid ammonia using LED light and nanotechnology, paving the way for sustainable and locally produced hydrogen. The technique overcomes a critical hurdle in realizing hydrogen's potential as a clean fuel.
Charged porphyrins enable researchers to study π-electronic ion pairs and their interactions, leading to the creation of electronic materials with unique properties. The study reveals fascinating new properties of stacked ion pairs and their potential applications in fields like nanomagnetism and ferroelectrics.
Researchers at Hokkaido University have developed a simple radical-based reaction to create unsymmetric variants of molecular compounds used in transition metal catalysts. This method opens up new avenues for designing catalysts and utilizes abundant ethylene feedstock.
Researchers developed a novel technique using isotope quenching to visualize the oxygen storage process in Pd/CeO2-ZrO2 three-way catalysts. The method revealed key insights into oxygen adsorption/desorption and surface/bulk diffusion, improving exhaust gas treatment efficiency.
The formation of fine bubbles in catalyst pores enhances gas generation reactions from liquid phase systems. This leads to a significant increase in the release of hydrogen per unit time, making the technology more compact and powerful. The discovery provides new insights into performance-limiting factors in heterogeneous catalysis.
Researchers used in-situ vibrational spectroscopy to study CO2 electroreduction reaction mechanisms and intermediates, revealing key insights into catalyst structure and electrolyte effects. The review highlights recent advances and future directions for this field.
Researchers found that adding water increases selectivity of 2,3-butanediol generation by 57%. Hydrogen bonding stabilizes radical intermediates, avoiding oxidation and promoting selective coupling. The study reveals non-chemical bonding interactions can steer reaction paths for selective photocatalysis.
Researchers at Lehigh University have secured $13.2 million in funding to improve hydrogen generation and carbon capture/sequestration technologies through a partnership with Georgia Tech's UNCAGE-ME Center. The goal is to develop catalysts that can mitigate the degradation of these technologies in real-world conditions.
Scientists have recorded photocatalysis charge separation processes experimentally on Cu2O particles, revealing rapid electron transfer and slower hole trapping, enabling better understanding of photocatalytic water splitting limitations. The technique allows for spatiotemporal imaging of charge transfer in photocatalyst particles.
Researchers develop a new type of sustainable click chemistry by incorporating copper ions into biodegradable proteins, making it non-toxic to living organisms. This breakthrough could lead to the creation of greener technologies and products.
Rice University engineers have developed a method to convert hydrogen sulfide into high-demand hydrogen gas and sulfur in a single step using gold nanoparticles. The process gets all its energy from light, offering a cost-effective alternative to traditional remediation methods.
A KAUST-led team creates selective anode catalysts for stable and efficient hydrogen evolution in seawater splitting. The nanoreactors exhibited high electrocatalytic activity and stability due to their unique structure, isolating the electrolysis from side reactions.
A University of Central Florida researcher is leading a $1.25 million project to map and manipulate materials at the nanoscale. The research aims to unlock new capabilities of materials at the nanoscale, potentially leading to new catalysts and compounds applicable in quantum science, renewable energy, life sciences and sustainability.
Scientists have created a new method to stabilize precious metals as catalysts, enabling efficient use of expensive materials in various applications. The approach involves dispersing metal atoms within nanometer-sized islands of cerium oxide, which provides high surface area and stability.
Researchers developed a novel 'nanoglue' strategy to stabilize atomically dispersed metal catalysts, achieving both high catalytic activity and stability. The nanoglues concept involves isolating metal atoms on small islands, suppressing migration to neighboring sites.
The THERACAT project aims to deliver drugs only to tumor sites using bio-orthogonal catalysis, a promising approach for targeted cancer treatment. Researchers developed nanoparticles bearing metal catalysts to efficiently convert inactive pro-drugs into active drugs at the tumor site.
Researchers at Hokkaido University have developed a one-pot-and-one-step synthesis procedure to create long and geometrically interlinked polymer molecules. This process can produce a wide range of advanced materials with applications in drug delivery, data storage, microelectronics, and nanolithography.
Researchers studied ketene conversion over H-SAPO-11 using kinetic analysis and spectroscopy. They found two pathways: acetyl species following acetic acid ketonization or acetoacetyl species via keto-enol tautomerism with water.