Articles tagged with Catalysis
Researchers have discovered a way to make solar hydrogen production economically viable by co-producing high-value chemicals like methylsuccinic acid. By coupling the photoelectrochemical (PEC) process with hydrogenation, the cost of hydrogen drops significantly, making it competitive with fossil gas.
Researchers at Washington State University have made a groundbreaking discovery about the Fischer Tropsch process, a key step in converting coal, natural gas, and biomass into liquid fuels. The team found that the process exhibits self-sustained oscillations, which can be harnessed to enhance reaction rates and product yields.
Researchers developed direct conversion of methane with oxygen at room temperature using edge-rich MoS2 catalyst, achieving up to 4.2% conversion rate and 99% selectivity for C1 oxygenates. The unique binuclear molybdenum site facilitates O2 dissociation and activates C-H bond.
A team of researchers elucidated how hydrogen peroxide affects the degradation of a carbon-based catalyst named N-G/MOF. The study examined changes in the catalyst's elemental composition, major chemical bonds, crystal structure, and morphology under varying concentrations of hydrogen peroxide.
Researchers developed a new catalyst using bismuth selenide, a topological insulator, to synthesize organoureas at room temperature with almost 100% yield. The catalyst's unique properties allow for stable surface states and recyclability.
Researchers at Rice University developed a way to convert carbon dioxide into methane using copper-based catalysts. The method relies on electrolysis and involves modifying the distances between copper atoms in polymer templates, which improves the chemical conversion rate.
Researchers investigate the impact of cathode catalyst layer platinum loading on PEMFC electrode-membrane assembly durability. Low Pt content impairs oxygen reduction activity but doesn't affect degradation mechanisms.
Scientists have introduced a novel approach to change the shape of azobenzenes using visible light, enabling efficient and practical applications. The new supramolecular complex, called DESC, harnesses the power of red wavelengths to prompt molecular transformations.
Zeolite-encapsulated metal catalysts show improved hydrogen-related catalytic reactions due to confinement effect, reducing sintering and leaching. Advanced characterization techniques are used to study fine structure of metal sites, enabling better understanding of catalytic performance.
Researchers have successfully developed a catalytic system to efficiently synthesize beta-lactam structures using abundant hydrocarbons as raw materials. The new catalyst eliminates the need for auxiliary attachment and removal, reducing the synthesis process from approximately eight steps to three steps.
Scientists at Chiba University developed novel ligands for transition metal complex photocatalysis, successfully catalyzing specific photoreactions like transfer hydrogenation. The newly designed ligands allow platinum complex to catalyze reactions in the presence of visible light, streamlining industrial processes.
A UH research team is developing innovative chemical processes to transform plastic waste into useful materials, aiming to create new ways to reuse and recycle polyolefins. The project seeks to produce durable thermoset materials that can be recycled multiple times, reducing environmental impact and promoting a circular plastics economy.
A novel method to obtain acetone has been developed by a scientific collaboration between researchers in Brazil and Germany, using only light and photoactive iron chloride. The process is direct, safer, and cheaper than traditional methods, with fewer stages and no high temperatures or flammable intermediaries.
A research team at City University of Hong Kong has developed a highly efficient electrocatalyst that enhances hydrogen generation through electrochemical water splitting. The catalyst, composed of transition-metal dichalcogenide nanosheets with unconventional crystal phases, exhibits superior activity and stability in acidic media.
Researchers at Nagoya University have developed an enzyme that can convert methane into methanol at room temperature in water. This technology has the potential to reduce the carbon footprint of natural gas and could be used to convert other hydrocarbons, offering a low-energy and environmentally friendly solution.
Researchers at USTC developed a new anode catalyst with high activity and high resistance to ammonia poisoning for AEMFC. The Cr-doped MoNi4 catalyst showed significant improvement over traditional Pt/C catalysts, maintaining peak power density under 10 ppm NH3.
A team from the University of Pittsburgh Swanson School of Engineering has developed a computational model that accurately predicts electrochemical conditions when hydrogen is inserted into different metal oxides. This breakthrough enables researchers to test and validate materials safely and effectively at lower costs.
Scientists at the University of Groningen created an oscillating system using simple molecules to achieve periodic catalytic activity. The system enables enhanced chemical selectivity, favoring one reaction over others, and has potential applications in polymer synthesis and drug delivery.
Researchers used X-ray tomoscopy to study freeze casting processes, observing the formation of complex, hierarchically structured materials with large surface areas. The technique provided high spatial and temporal resolution, revealing the dynamics of directional ice crystal growth and the formation of organic-looking structures.
Researchers from Tokyo University of Science have developed a catalyst support based on titanium dioxide powder to facilitate effective CO2 reduction. The study demonstrated increased hydrogen production and enhanced catalytic performance with silver nanoparticles loaded onto the TiO2 surface.
A University of Adelaide-led study introduces a new method to engineer plant cell wall enzymes, enabling the production of valuable products. The technique involves controlling specific enzymes' catalytic function to assemble, structure, and remodel plant cell walls.
Scientists at OIST have synthesized a new metallocene compound capable of holding up to 21 electrons, surpassing the traditional 18-electron limit. This breakthrough has significant potential for applications in medicine, catalysis, and energy, and could lead to novel materials with improved stability and performance.
A new ribozyme called SAMURI can precisely modify RNA molecules, making them accessible for click chemistry. This allows researchers to label and visualize RNA pathways in living cells, enhancing their understanding of RNA interactions and functions.
Researchers from the University of Groningen created a synthetic system that exhibits eco-evolutionary dynamics, where replicators adapt to their environment and undergo natural selection. The system consists of two different ring sizes that compete for a common building block, with one replicator emerging as dominant in certain enviro...
Researchers developed a heterogeneous photocatalytic system using cadmium sulfide nanosheets to realize borylation reactions involving N-heterocyclic carbene boranes (NHC-BH3). The process enables the synthesis of high-value transformations under room temperature and light conditions.
Scientists successfully synthesized long-chain mobile polymers on metallic surfaces using N-heterocyclic ballbot-type carbenes. This breakthrough enables self-assembly into ordered domains and cooperative behavior, holding promise for new applications in nanoelectronics and surface functionalization.
Researchers have made a significant advancement in the synthesis of β-lactam scaffolds, structural components frequently found in essential antibiotics. The breakthrough uses nickel catalysts to overcome challenges in β-lactam synthesis, enabling more efficient and simplified production of high-value materials.
Researchers from The University of Warwick and The University of Manchester have solved the long-standing puzzle of why graphene is permeable to protons. Protons are strongly accelerated around nanoscale wrinkles in perfect graphene crystals, which could lead to more sustainable hydrogen production.
Researchers at Iowa State University have created synthetic catalysts that mimic natural enzymes to break down cellulose in plant biomass. These nanoparticle catalysts can be reused multiple times, overcoming the limitations of natural enzymes, which are expensive, unstable, and difficult to recycle.
Researchers developed a three-metal hybrid catalyst material featuring nickel, palladium, and platinum interfaces to enhance water splitting and hydrogen molecule generation. The new catalyst demonstrated significant stability and high catalytic activity, overcoming challenges of functional interferences.
A paper published in Nature Energy reveals a promising breakthrough in green energy: an electrolyzer device capable of converting carbon dioxide into propane. The device, developed by Illinois Tech assistant professor Mohammad Asadi, is scalable and economically viable.
Researchers at ETH Zurich have developed a method that collects and purifies water from fog simultaneously, rendering it safe for use in densely populated urban centers. The technology uses a close-mesh lattice coated with polymers and titanium dioxide to break down organic pollutants.
Researchers at Gwangju Institute of Science and Technology have developed a novel mesoporous tantalum oxide-supported iridium nanostructure catalyst for efficient proton exchange membrane water electrolysis. The catalyst exhibits improved oxygen evolution reaction activity, stability, and cost-effectiveness.
Researchers have developed a novel catalysis scheme that enables previously impossible chemical reactions without the use of rare and precious metals. The method uses light to activate the catalyst, allowing for the optimization of the process.
A breakthrough solution has been discovered to recycle blended fabrics like polyester/cotton using a simple technique involving heat, non-toxic solvent, and household ingredient. This environmentally friendly approach can recover cotton on a scale of hundreds of grams while preserving the plastic component.
Scientists propose an alternative model to explain the fast onset of chemical reactions required for life. The new paradigm suggests that catalytic clusters can form rapidly and in large numbers, enabling the self-organization of molecules into living structures.
A joint research team from City University of Hong Kong and collaborators developed a stable artificial photocatalytic system that mimics natural chloroplasts to convert carbon dioxide into methane, a valuable fuel, very efficiently using light. The new system achieved a highly efficient solar-to-fuel efficiency rate of 15%, surpassing...
Researchers at CABBI develop photoenzymatic system to efficiently synthesize chiral amines, crucial chemical building blocks with wide applications. The team's new method addresses a longstanding challenge in synthetic chemistry and offers a promising platform for biomanufacturing.
A new method called Degradation Upcycling (Deg-Up) recovers aromatic chemicals from polystyrene waste in a two-step process. This approach produces valuable chemicals for the cosmetics and pharmaceutical industries, offering a circular plastics economy solution.
A collaborative research team created an experimental platform to control the atomic-level structure of high-entropy alloy surfaces and test their catalytic properties. Their study found that the surfaces performed better in oxygen reduction reactions compared to other materials, indicating a 'pseudo-core-shell-like structure' contribu...
Researchers from Tokyo Institute of Technology have successfully synthesized high-purity SrVO2.4H0.6 and Sr3V2O62H0.8 perovskite oxyhydrides using a novel high-pressure flux method, opening up new possibilities for catalysts and lithium-ion battery electrodes.
Researchers have developed a single-atom catalyst that efficiently removes methane from engine exhaust at low temperatures, even when the engine is starting. The catalyst uses every atom of precious metals and maintains reaction stability at higher temperatures.
Researchers used X-ray photocrystallography to study the transition metal-nitrenoid intermediate in catalytic amination reactions. The team successfully captured the structure and properties of the rhodium-acylnitrenoid intermediate, providing crucial insights into its reactivity.
Researchers have developed a new catalyst that can remove up to 90% of unburned methane from natural-gas engine exhaust at low temperatures, addressing a significant source of greenhouse gas emissions. The breakthrough could lead to lower exhaust emissions and mitigate global warming.
Researchers developed a general para-selective aza-Friedel-Crafts type reaction of phenols with imines, opening up new possibilities for the rapid and safe synthesis of medicines and advanced materials. The bulky PyBidine-Ni(OAc)2 catalyst facilitated highly para-selective reactions with up to 99:1 selectivity.
Acetalization is a feasible and sustainable strategy for biomass valorization, serving as both a synthesis tool and protection mechanism for renewable acetal fuel additives. The latest research advances in catalytic systems for the acetalization of biobased furanic compounds and glycerol derivatives are summarized.
Researchers from Tokyo Institute of Technology have developed a novel synthesis method for imine-based COFs, eliminating the need for long reaction times, high temperatures, and Lewis acid catalysts. The method uses an electrogenerated acid as a catalyst, enabling direct fixation of COF films onto electrodes.
Researchers have developed novel photocatalysts using layered metal-organic frameworks that exhibit improved charge separation properties. These materials are able to efficiently extract charges without structural defects, enabling record values in photocatalytic hydrogen production under visible light.
Carbon-based materials have been found to be more reactive with alcohol-functionalized oxygens, challenging traditional catalysis chemistry. The researchers' study showed a correlation between the amount and type of oxygen present and performance, including the long-range effects of aromatic rings.
Researchers have developed a Cu/CeO2 catalyst that efficiently converts NO to NH3 under visible light. The catalyst works by promoting the decomposition of an intermediate molecule, which leads to enhanced NH3 production.
Researchers demonstrate critical roles of metal cocatalysts in modulating surface oxidation kinetics and selectivity in methane oxidation. Metal cocatalysts play a key role in promoting CO2 production over C2H6 formation.
A new flow battery design has achieved a record-breaking 60% increase in peak power using a dissolved simple sugar called β-cyclodextrin, which boosts battery capacity and longevity. The battery maintained its energy storage and release capabilities for over a year without significant loss of activity.
An international team of chemists has successfully used structural editing to insert a four-membered molecular ring into an aromatic ring, creating a complex bicyclic ring system. The new process utilizes visible-light photocatalysis, providing environmentally friendly and atom-economical conditions.
Researchers at Shibaura Institute of Technology have developed a faster way to synthesize CoSn(OH)6, a powerful catalyst required for high-energy lithium–air batteries. The new method uses solution plasma-based synthesis and achieves highly crystalline CSO crystals with improved catalytic properties.
Researchers from Tokyo Institute of Technology explore co-polymerization of glycol nucleic acid monomers with dicarboxylic acids to produce branched and linear xeno nucleic acid polymers. These findings suggest that diverse prebiotic organic molecules could have led to population-level differences in abundance of genetic polymers.
Researchers employ DFT and NEST analysis to investigate pyrrolidinyl gold(I) complexes, revealing enhanced understanding of electronic and steric effects. The findings facilitate the design of novel chiral ligands for enantioselective reactions.
Researchers at USTC developed a novel catalyst synthesis strategy to optimize hydrogen evolution reaction (HER) activity and stability. The strategy involves adjusting the electronic structure of CoSe2 nanobelts, resulting in high-efficiency HER performance similar to commercial Pt/C catalysts.
Kolomeisky aims to develop analytical models that quantify the role of heterogeneity in chemical and biological processes. He plans to explore its impact on catalytic reactions, antimicrobial peptides and early cancer development.
Researchers at PNNL have developed a baking soda solution for storing hydrogen, addressing the challenge of long-duration energy storage. The study aims to advance the DOE's H2@Scale initiative and reduce the cost of hydrogen production.
Researchers found that boron species plays a key role in enhancing catalytic activity and selectivity in the selective hydrogenation of cinnamaldehyde over cobalt boride catalysts. The study uncovers a synergistic effect between boron species and water, leading to improved stability and selectivity of the catalysts.