Articles tagged with Olefins
A new catalytic strategy using hydroxyl-induced cobalt oxide enables efficient conversion of syngas to light olefins through Fischer-Tropsch synthesis. The catalyst achieved high CO conversion and light olefin selectivity, with carbon utilization efficiency reaching up to 13%.
Researchers developed a FeCo alloy catalyst encapsulated in graphene layers, achieving efficient CO2 conversion to light olefins. The catalyst showed high performance with 52.0% CO2 conversion and 33.0% selectivity to light olefins.
Researchers identified alkene ozonolysis as the dominant driver of O₃ formation during cold January days in Lanzhou, China. The study proposes actionable mitigation strategies to reduce O₃ levels by targeting alkene and nitrogen oxide emissions.
Researchers at King's College London developed a new method to produce biofuels from fatty acids in cooking oil, making it as effective as diesel with improved efficiency. The technology uses enzymes to break down fatty acids into alkenes, reducing the need for conventional catalysts and toxic chemicals.
Researchers at UCLA have invalidated Bredt's rule, a fundamental principle in organic chemistry that has constrained the design of molecules for pharmaceutical research. By creating anti-Bredt olefins, also known as ABOs, chemists can now generate highly unstable structures with practical value.
Researchers at National University of Singapore develop a straightforward method to convert common chemicals into valuable alkenes using light. The new method simplifies the production of alkenes from abundant feedstock chemicals, enabling the creation of complex bioactive molecules.
Researchers developed a self-assembling catalyst to facilitate the reaction between alkenes and alcohols, producing ethers with improved efficiency, generality, and selectivity. The catalyst's design was inspired by enzymes, which can position reaction partners for optimal reactivity.
A team from Kyushu University has developed a zeolite catalyst that can be heated using microwaves to speed up the conversion of fatty acid esters to olefins. This process improves energy efficiency and reduces carbon dioxide production, offering a more sustainable chemical industry.
Researchers at the University of Illinois developed an eco-friendly method to precisely mix fluorine into olefins using natural enzymes and light, offering a more efficient strategy for creating high-value chemicals with potential applications in agriculture, pharmaceuticals, renewable fuels and more.
A rhodium-catalyzed [2+2+1] cycloaddition reaction expands the possibilities for creating complex organic molecules. The researchers achieved high enantiomeric excess values of 94-99% using phosphine ligands, enabling the synthesis of diverse compounds.
A team at UNC-Chapel Hill has developed a new process for synthesizing amides with 100% atom efficiency, employing environmentally friendly cobalt. This approach offers an attractive alternative to traditional methods, which often generate waste and poor atom economy.
Researchers have discovered that the waxy protective barrier around plants plays a role in sending chemical signals to other plants and insects. This discovery might eventually be harnessed to develop stronger plants that can deal with challenging environmental conditions.
Researchers have created a reliable and efficient method to add fluorine to molecules, increasing pharmaceutical drug efficiency. The iron and sulfur-based reaction enables the release of fluorine from carboxylic acids and its incorporation into alkenes, common building blocks for drugs.
A new paradigm of metal electron-shuttle catalysis has been proposed by USTC researchers to overcome challenges in alkene difunctionalization reactions. This approach uses a nickel catalyst as an electron shuttle to initiate and quench radicals, avoiding unstable alkyl-metal intermediates.
A new recycling method reduces emissions by 60% and opens the door to reusing materials like plastic film, multilayer materials, and colored plastics. The technique recovers olefins from pyrolysis oil and uses them in a chemical process to convert into aldehydes and industrial alcohols.
A team has developed a new approach to disentangle the activity-selectivity tradeoff in catalytic conversion of syngas to light olefins, achieving high CO conversion and selectivity. The strategy involves incorporating germanium-substituted aluminophosphates within the OXZEO catalyst concept.
Researchers have engineered bacteria to combine natural enzymatic reactions with the carbene transfer reaction, producing new-to-nature carbon products that can be used in biochemicals and advanced biofuels. This breakthrough could reduce industrial emissions by providing sustainable alternatives to chemical manufacturing processes.
Researchers observed strong crystal phase-dependent activity of MnGaOx in direct syngas conversion. The HCP oxide remained unchanged after reduction, while the FCC solid solution oxide transformed into a spinel structure with improved catalytic performance.
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 introduce synthetic catalysts into algae cells, enabling chemical reaction upgrades to produce building blocks for polymers and chemicals. The process reduces reliance on fossil raw materials, using atmospheric carbon dioxide as a carbon source.
Chemists at the University of Münster developed a novel method for synthesizing complex organic molecules using visible light. The method produces biologically valuable β-amino acids, including a bifunctional oxime oxalate ester with both amine and ester functionalities.
Researchers at Rice University have developed a chemical process that can add two distinct functional groups to single alkenes, a breakthrough in drug design and materials science. The process uses manganese catalysts and photocalysts to enable radical ligand transfer, allowing for the creation of unique molecules.
Researchers have designed an iron catalyst to facilitate the olefin metathesis reaction, a widely applicable catalytic reaction for carbon-carbon double bond formation. The iron-based catalyst shows promise in reducing costs and environmental impact compared to traditional ruthenium-based catalysts.
Researchers at Princeton University have developed a method to generate less-stable olefins from internal olefins catalytically, utilizing photocatalysis and chromium co-catalysis. This innovation allows for the conversion of internal olefins into terminal olefins, which are useful starting points in various chemical processes.
Researchers at Stanford University have created a new catalyst that can convert carbon dioxide into gasoline up to 1,000 times more efficiently than existing standards. The breakthrough allows for the production of long-chain hydrocarbons, making it easier to handle and store, with potential applications in a carbon-neutral cycle.
A research team has developed a new strategy to create molecular compounds without multi-step syntheses, using a system of three catalysts. The catalysts work together to selectively insert an aryl group into unactivated alkenes, offering a sustainable and efficient solution for organic synthesis.
Researchers genetically engineer E. coli microbes to convert glucose into olefins, a type of hydrocarbon found in gasoline, using a two-step process with a catalyst. This method has potential to advance green energy technology and create sustainable biofuels.
A new membrane technology has been developed at KAUST, enabling the selective separation of light hydrocarbons at low energy costs. The approach uses molecular-sieving membranes that can be synthesized continuously at room temperature and ambient pressure.
A team of Lehigh University researchers is studying a promising alternative catalytic process based on solid acid catalysts for ethylene dimerization. Using in situ and operando molecular spectroscopy, they aim to understand the surface structures of the catalyst and design more active catalysts with reduced environmental impact.
Researchers have developed a new method to build nitrogen- and phosphorus-containing compounds from feedstock chemicals using PcFe as a catalyst. The reaction offers high efficiency and yields up to 88% with a low activation energy of 4.8 kcal/mol.
Researchers at NTHU and IU developed a novel four-component coupling strategy for olefins, resulting in asymmetric radical trifluoromethylation. The reaction utilizes chiral VO species as catalysts under aerobic conditions, offering high diastereo-/enantio-controls and potential applications for biomedical compounds.
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.
Saarbruecken chemists create new class of germanium-based compounds with Ge=Ge bond stability for synthetic use in olefin metathesis. The method enables synthesis of long-chain polymers and holds promise for novel materials in organic electronics.
Scientists at University of Münster have successfully synthesized the least accessible form of vicinal aminoalcohols using a photo-initiated reaction method. This breakthrough enables the efficient production of high-quality organic compounds found in everyday products, with potential applications in pharmaceuticals and natural products.
Researchers at Rice University have developed a novel method for producing olefins, or alkenes, using vitamin B12 and blue light, eliminating harsh chemicals typically needed in the process. This breakthrough could lead to more efficient and sustainable production of drugs, agrochemicals, and plastics.
Rice University scientists have developed a novel 'green' method for producing pharmaceutical intermediates using the cooperative hydrogen atom transfer (cHAT) technique. This approach employs earth-abundant iron and sulfur as catalysts, reducing costs and environmental impact compared to traditional methods.
Scientists at the University of Münster developed a new method to construct complex polyenes, such as retinoic acid, using small molecules as
A Cornell-led collaboration has developed a new electrochemical reaction that enables the creation of chiral molecules, crucial for drug synthesis. The breakthrough could lead to the manufacture of a host of new, low-cost drugs with improved efficacy and reduced production costs.
Researchers developed a new MOF co-catalyst that selectively produces branched aldehydes, which are difficult to achieve with existing catalysts. The study demonstrates the potential of MOFs to enhance selectivity in various catalytic reactions.
Researchers at the University of Sussex have found a way to convert depleted uranium into ethane, an alkane used to produce ethanol and other compounds. This breakthrough could reduce the storage burden of DU and lead to new energy sources, challenging previous fears about its health risks.
Researchers at Kanazawa University developed a reaction to link three components simultaneously, creating highly functionalized ketones. The method uses free radical chemistry and an N-heterocyclic carbene catalyst, controlling the positions of functional groups with high selectivity.
The National Science Foundation awards $354,954 to Dr. Giannis Mpourmpakis' research on dehydrogenation of alkanes on metal oxides. This breakthrough could enable more efficient and cost-effective chemical production using abundant natural gas reserves.
Chemists from Bonn University and Columbia University have discovered a novel catalytic method that can produce Markovnikov alcohols, previously thought to be impossible. The new mechanism uses two catalysts and strictly coordinated reactions to achieve the desired outcome without by-products.
Researchers developed a method to screen different catalysts for converting light alkanes into olefins, potentially providing a more economical solution for olefins production. The breakthrough could be a game-changer in the petrochemical and polymer industries.
A new study by Gregory Fu and his team demonstrates a method for creating molecules with only one handedness using abundant, inexpensive materials. This technique can make the discovery and synthesis of bioactive compounds like pharmaceuticals less expensive and time-consuming.
Srinivas Rangarajan, assistant professor of chemical and biomolecular engineering at Lehigh University, received a research grant from the American Chemical Society Petroleum Research Fund to investigate olefin production. The study aims to develop more energy-efficient catalysts for producing olefins directly from shale gas.
Scientists have discovered a cheap and efficient way to produce olefins, the chemical feedstock for many products, using a titanium-based catalyst. The reaction can be performed at low temperature and has the potential to reduce greenhouse gas emissions and costs associated with traditional fossil fuel-based methods.
Researchers have developed a more energy-efficient catalytic process to produce olefins, which are crucial building blocks for polymer production. By analyzing carboranes' role in dehydration reactions, the team created linear relationships between energy input and alcohol characteristics.
Researchers at TSRI have developed a decarboxylative alkenylation method that turns carboxylic acids into olefins in relatively few steps, enabling the discovery and development of new drugs and chemical products. This approach simplifies traditional methods, allowing for better control over molecule geometry and synthesis logic.
Researchers create new catalytic approach to prepare compounds essential to drug discovery with high selectivity and 20 times less solvent than alternative methods. The new strategy was used to prepare the anti-cancer agent pacritinib, which is now in advanced clinical trials.
Researchers at ICIQ have designed a new strategy for stereoconvergent preparation of trans-cyclopropanes from E/Z alkene mixtures. The 'radical carbenoid' method uses diiodomethane as a commercially available and easy-to-handle reagent.
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 at TSRI have developed a novel reaction to synthesize complex amines using abundant compounds, offering improved efficiency and reduced costs. The new method has been successfully applied in pharmaceutical research, providing access to valuable drug compounds.
Chemists at Scripps Research Institute invent powerful method for joining complex organic molecules, allowing venture into previously inaccessible territory. The new technique enables the creation of new chemical entities with potential applications in pharmaceuticals, materials and agricultural chemistry.
Scientists discover a new method to convert waste cooking oil and lard into olefins, a key ingredient in making plastics. This breakthrough could reduce reliance on petroleum-based plastics and promote more sustainable alternatives.
Researchers from Woods Hole Oceanographic Institution and University of California, Santa Barbara, used a patented method to fingerprint chemical makeup of oil sheens and estimate source based on evaporation of gasoline-like compounds. The study confirms that the Deepwater Horizon debris is the likely source of Gulf of Mexico oil sheens.
The study identified pockets of oil trapped within the wreckage of the sunken rig as the source of recent oil sheens. This finding suggests that the amount of leakage is limited to these trapped oil pockets, providing some comfort that the situation is under control.
Research from Nobel laureates presented at the American Chemical Society meeting includes advances in green chemistry and understanding of molecular structures. The work has significant implications for industries such as medicine and energy production.
Nobel laureates including Robert H. Grubbs and Richard R. Schrock present cutting-edge research on metathesis method and biodegradable polymers, advancing green chemistry and sustainable materials science. The presentations also explore innovative applications for plastics, medicines, and energy.
A CU-Boulder-led research team has discovered a new chemical compound in Earth's atmosphere that reacts with sulfur dioxide to form sulfuric acid, which impacts climate and human health. The newly found oxidant affects the atmospheric sulfur cycle and may explain recent cooling trends in parts of the southeastern United States.