Articles tagged with Catalysis
Researchers developed catalysts for selective ethanol conversion, improving upon existing precious metal-based options. The new catalysts exhibit high alcohol conversion and selectivity to acetaldehyde, making them a promising alternative for industrial applications.
Researchers have developed a more efficient and environmentally friendly method to produce hydrogen peroxide by using palladium-gold nanoparticles as a catalyst. The new process produces almost 100% hydrogen peroxide with minimal water formation, making it a promising alternative to traditional methods.
Researchers developed a novel solar energy-driven method to produce ethylene glycol (EG) from methanol, offering a sustainable and clean alternative. The catalyst, nitrogen-doped tantalum oxide, demonstrated high activity and stability for EG production, making it an environmentally friendly candidate for industrial applications.
Researchers from ICIQ's Lloret-Fillol group have isolated and fully characterised an elusive intermediate in the Water Oxidation Reaction (WOR), a key reaction for producing atmospheric oxygen. The breakthrough provides direct evidence of the oxygen-oxygen bond formation mechanism, opening doors for efficient catalyst design.
Researchers discovered that Ganoderic acid can increase the radiosensitivity of cancer cells, making them more susceptible to radiation therapy. This breakthrough provides new hope for cancer treatment and could lead to improved patient outcomes.
Researchers develop an iron-based catalyst that rapidly removes sulfadiazine antibiotic residues from water by activating H2O2 to generate free radicals. The catalyst shows high efficiency and stability, making it a potential solution for tackling micro-pollutants in water.
A novel graphene-based nanozyme was developed using Ganoderma lucidum extract polysaccharides, enabling high sensitivity and selectivity detection of L-cysteine in serum. The study published in Analytical and Bioanalytical Chemistry demonstrated improved stability and dispersion of the nanozyme in water.
Researchers studied DUT-8, a switchable MOF structure that changes shape in response to guest molecules. The findings improve understanding of switching processes and gas exchange reactions in MOFs, paving the way for targeted development of functional materials.
A team of researchers from USTC developed a novel Ni-W-Cu alloy, demonstrating 4.31 times higher efficiency than traditional platinum-based catalysts in alkaline medium hydrogen oxidation. The alloy maintains high activity for up to 20 hours and shows excellent resistance to CO poisoning.
Scientists have discovered a way to synthesize highly active single-atom catalysts using iron-breathing bacteria, promising a cheap and reliable method for hydrogen production. The innovation utilizes the bacterium's metal-reducing ability to conduct electrons and produce single atoms of catalytically active metals.
Researchers designed a Cu-Pd bimetallic electrocatalyst that lowers the energy barrier of C2 product generation, resulting in a 50.3% C2 Faradaic efficiency. The catalyst exploits the benefits of both Cu (low energy barrier) and Pd (ultrafast kinetics), addressing CO2 conversion limitations.
Research at TU Wien reveals that individual facets of nanoparticles can form oscillations of different frequencies when exposed to oxygen and hydrogen. This complex behavior can lead to more effective catalysts and insights into non-linear reaction kinetics.
A new method has been developed to observe graphene growth on a microchip surface in real time, using a standard scanning electron microscope. This technique enables the reliable production of graphene layers and reduces growth times from several hours to just minutes.
Researchers at NUS have developed a method to increase the rate of ethylene hydrogenation by more than five times compared to typical industrial rates using oscillating electric potentials on commercial catalysts.
A team of researchers has proposed a revised mechanism for adding functional groups onto simple hydrocarbons like methane, highlighting the essential role of chlorine atoms. This new understanding is crucial for designing next-generation catalysts and finding scalable approaches to turn greenhouse gases into value-added chemicals.
A new iron-nitrogen-doped carbon catalyst has been developed to preferentially reduce nitric oxide to hydroxylamine, reducing harmful air pollutants. The catalyst achieved efficient (71%) NH2OH production in a prototypical NO-H2 fuel cell and exhibited long-term stability.
Researchers at Skoltech developed a new algorithm to identify over 200 previously unknown single-atom-alloy catalysts with improved stability and performance. The AI-powered approach uses machine learning models to extract key parameters from computational data, providing a recipe for finding the best SAACs for specific applications.
A team of four scientists from Hokkaido University developed a rapid and efficient protocol for cross-coupling reactions using ball milling, expanding the pool of chemicals usable in organic synthesis. They successfully applied this method to mostly-insoluble aryl halides, yielding desired products.
Researchers have discovered a new oxygen-coordinated molybdenum single atom catalyst that exhibits high nitrogen reduction reaction activity and stability in producing ammonia. The catalyst, anchored on activated carbon, shows promising results for efficient electrosynthesis of ammonia.
Researchers at Washington State University have developed a catalytic process to efficiently convert polyethylene to jet fuel and high-value lubricants. The process converts 90% of plastic to usable products within an hour, offering a promising approach to reducing waste plastics.
Scientists have discovered that hydroxyapatite, a mineral present in human bones, can efficiently decompose hazardous organic compounds when activated using mechanical stress. This breakthrough could lead to the development of cheap, noble-metal-free catalysts for controlling volatile organic compounds.
Scientists from the University of Pittsburgh and University of Rochester aim to improve seawater-to-fuel technology by refining a crucial step in the process. The researchers seek to design catalysts that can efficiently convert carbon dioxide into usable fuels, making the process more energy efficient and safer.
KAUST researchers have developed a robust catalyst that converts carbon dioxide into carbon monoxide gas with 100% selectivity, overcoming the limitations of precious metals. The innovative method uses MOFs to create mixed metal catalytic nanoparticles in a homogenous mixture.
Scientists have developed a suite of advanced tools to study the oxygen evolution reaction, a key step in producing hydrogen fuel from water. They observed catalyst nanoparticles accelerate oxygen generation at unprecedented detail, identifying a single limiting step in the reaction.
Researchers at KAUST developed a new family of catalysts that leverage aromaticity for improved performance in reactions such as hydrogen production and ester formation. The PN3(P) pincer complexes exhibit high catalytic activity, but more importantly, provide insights into the role of aromaticity in catalysis.
Researchers have discovered a new aerogel electrocatalyst formed from inexpensive metal alloys, enabling highly efficient electrochemical conversion of carbon dioxide. The process achieves an efficiency of 93% with minimal byproducts.
Researchers at Vienna University of Technology have developed a new microscopy technique that allows for the measurement of atomic acidity on surfaces. This breakthrough enables analysis of catalysts on an atomic scale, which is crucial for improving chemical reactions.
Researchers have developed a new method for synthesizing zeolite catalysts that improves catalytic performance by up to five-fold. The improved hierarchical zeolite catalysts show unprecedented improvement in stability and selectivity, potentially reducing the need for costly turnarounds.
University of Delaware researchers report a breakthrough process that can convert hard-to-recycle plastics into usable molecules. The hydrocracking process requires less energy than other technologies and can treat various plastics, even when mixed together.
A new heterogeneous coupling catalyst for OCM has been developed, achieving a C2 yield of 10.9% at low temperatures. The catalyst's surface coupling mechanism controls the formation of C2 species, increasing selectivity and yield.
Researchers have identified a new light-driven enzyme, fatty acid photodecarboxylase (FAP), that converts fatty acids into alkanes and alkenes under blue light. The enzyme's complex photocycle drives this transformation, and its structure has been elucidated using serial femtosecond crystallography.
Scientists develop new catalyst to efficiently synthesize aziridines with high enantiopurity, a crucial step towards creating novel medicines. The reaction method also shows potential for other stereo-selective synthetic reactions.
Researchers have created a new catalyst that allows for more efficient and sustainable production of aromatic hydrocarbons using renewable sources like woody biomass. The catalyst reduces the need for high temperatures and pressures, minimizing energy costs and emissions.
Researchers create nanostructured bimetallic catalysts with enhanced activity and stability, offering a cost-effective alternative to noble metal-based catalysts. The new material is stabilized on a conductive surface using a polymeric material, enabling predictable catalysis performance.
A recent study has unveiled a new principle that active charge transfer at the interface between non-noble metals can enhance the catalytic performance of complex oxide catalysts. The researchers found that CeO2-deposited spinel oxide nanocubes exhibited a 12-times higher CO oxidation rate than pristine Co3O4 NCs.
Researchers from Boston College and Yale University found a mechanistic switch in the oxygen evolution reaction that uses water to produce hydrogen gas. The switch occurs when applying voltage to the catalyst surface, enabling efficient electrocatalysts to be chosen or optimized depending on the potential regime.
Researchers developed a photo-oxygenation catalyst that destabilizes and removes amyloid plaques, enhancing immune system clearance. The treatment significantly reduced amyloid protein in mouse brains, with human brain samples supporting its potential use in humans.
Researchers at St Petersburg University have synthesized polymers from biomass, making them recyclable and potentially replacing traditional plastics. The new polymers are based on terpenols, natural compounds found in plants like mint and white fir trees, and can be recycled at moderate temperatures.
A recent X-ray study clarifies the reaction mechanism of lithium manganese oxide (Li2MnO3) and finds it suitable as a catalyst for high-energy electrode materials. The discovery paves the way for exploring alternative battery technologies, including lithium-air and lithium-carbon dioxide batteries.
A team at the Indian Institute of Science developed a catalytic version of the Fischer indole synthesis that primarily produces one enantiomer. The reaction involves a dynamic kinetic resolution mechanism with a chiral catalyst, resulting in moderate yields and good to excellent enantiomeric selectivity.
Osaka University researchers have developed an air-stable and highly active single-crystal cobalt phosphide nanorod catalyst for the reductive amination of carbonyl compounds. The catalyst overcomes limitations of conventional cobalt catalysts, retaining high activity after multiple uses.
Researchers designed a nanodendrite Pt-Cu alloy electrocatalyst with high-index surfaces and graded composition, achieving excellent mass and area activities for oxygen reduction reaction. The catalyst's unique morphology and composition provide a high specific surface area to improve Pt utilization and enhance ORR activity.
Researchers at KIST have created a large-scale CO2 conversion system using a sea urchin-shaped nano copper catalyst, which increases catalytic activity and yields ethylene by over 50%. The findings suggest that increasing copper hydroxide content is key to enhancing efficiency.
Researchers have developed a zeolite-based nanocatalyst that achieves 2.5-times higher ammonia decomposition performance than conventional commercial catalysts while using only 40% of ruthenium metal. This new catalyst overcomes stability issues and enables large-capacity hydrogen transport via ammonia decomposition.
Researchers at Oak Ridge National Laboratory have developed a refractory metal alloy that can withstand extreme temperatures and is viable for additive manufacturing. The team also created an electrocatalyst that enables the conversion of water and carbon dioxide into higher weight hydrocarbons, set to reduce fuel costs.
Researchers at Dalian Institute of Chemical Physics developed a dual-bed catalyst that achieves highly efficient and selective conversion of syngas to gasoline-range liquid hydrocarbons. The catalyst showed excellent stability, with selectivities of C5-11 and C3-11 in the hydrocarbon products reaching 80.6% and 98.2%, respectively.
Researchers at Chinese Academy of Sciences developed a method to deposit high-dispersed Fe species into ZSM-5 micropores, resulting in high selectivity of cyclohexanone (92%-97%) and improved catalyst activity. The Fe content can be precisely controlled by varying ALD cycles.
Researchers at MIT have created synthetic mucins with a polymer backbone that mimic the structure and function of naturally occurring mucins, effectively neutralizing the bacterial toxin that causes cholera. This breakthrough could lead to new treatments for infectious diseases and potentially less resistance to antibiotics.
Researchers at Ruhr-University Bochum and University of Duisburg-Essen developed a stable copper catalyst for CO2 conversion using boron. The catalyst's selectivity and long-term stability were improved, enabling the formation of larger carbon compounds that can be used as base chemicals or fuels.
Researchers discovered that the potato toxin α-solanine is biosynthesized from the spirosolane α-tomatine found in tomatoes. The conversion involves a dioxygenase enzyme called DPS, which can be suppressed with an inhibitor, offering a potential basis for suppressing poisonous compound synthesis in potatoes.
Scientists at the DOE/Pacific Northwest National Laboratory have successfully demonstrated a biocrude conversion process that can operate continuously for over 2,000 hours without losing effectiveness. The process converts various types of biocrude from wastewater and food waste into high-quality renewable diesel fuel.
Researchers have developed a Sn/reduced graphene oxide catalyst for efficient formic acid synthesis from CO2 through electrochemical reduction. The catalyst achieved a Faradic efficiency of 98% and significantly reduced overpotential, enabling the production of high-purity formic acid.
Researchers at RUDN University found that fluorine-containing compounds can simplify the purification of catalysts from reaction products, making them reusable. This technology could improve ruthenium-based catalysts for pharmaceutical and industrial applications.
Scientists successfully achieved homogeneous catalyst by dissolving electrocatalytic metals in molten gallium, improving formic acid selectivity and reducing hydrogen evolution. The new method brings a significant breakthrough for synthesizing heterogeneous catalysts with enhanced stability.
Researchers have developed a new catalyst for the low-temperature hydrogenation of CO2 to methanol with high activity and selectivity. The sulfur vacancy-rich few-layered MoS2 catalyst achieves 94.3% methanol selectivity at 180°C, outperforming commercial catalysts.
Researchers at Northwestern University have developed a new method for producing propylene, a key component of plastics, that uses less energy. The technique, which involves the use of two catalysts, produces yields up to 30% higher than traditional methods, making it a promising solution for more energy-efficient plastics production.
Cu-based small-pore zeolites have been demonstrated to be promising candidates for NH3-SCR catalysts due to their unique structural features and physicochemical properties. The latest advances in Cu-SSZ-13 applied to the NH3-SCR reaction highlight the significant opportunity presented by zeolite-based catalysts.
Researchers have developed a dual-functioning catalyst that breaks down common drugs in wastewater while efficiently converting water into hydrogen for fuel. The catalyst, composed of cobalt oxide and titanium dioxide with platinum nanoparticles, showed promise in degrading antibiotics and producing substantial amounts of hydrogen.
Researchers from Osaka University have developed a sustainable method for synthesizing vicinal diamines, crucial in medications for influenza and colorectal cancer. The process uses molecular iodine as a catalyst, reducing the need for rare and toxic metals.
Scientists from Tokyo Metropolitan University have developed a scalable method to create ordered porous metallic oxide thin films using a range of transition metals. The process enables the production of highly ordered nanohole arrays ideal for various industrial applications.