Current Catalytic Converters News and Events

Current Catalytic Converters News and Events, Catalytic Converters News Articles.
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Synthesis of a rare metal complex of nitrous oxide opens new vistas for
Like its chemical relative carbon dioxide (CO2), nitrous oxide (N2O) is an important greenhouse gas and the dominant ozone-depleting substance. Strategies for limiting its emissions and its catalytic decomposition with metals are being developed. A study indicates that nitrous oxide can bind to metals similarly to carbon dioxide, which helps to design new complexes with even stronger bonding. This could allow the use of nitrous oxide in synthetic chemistry. (2021-02-22)

Hydrogen peroxide, universal oxidizing agent, high-efficiency production by simple process
The Korea Institute of Science and Technology(KIST) announced that a joint research team developed a platinum-gold alloy catalyst for hydrogen peroxide production based on a computer simulation. Hydrogen peroxide selectivity can be increased to 95% by using this catalyst, compared with only 30-40% for a palladium catalyst, which indicates that mostly hydrogen peroxide on the developed Pt-Au catalyst can be produced with a small amount of water. (2021-02-16)

Breakthrough in organic chemistry: Asymmetric syntheses of useful, unique chiral compounds
''N?C axially chiral compounds'' are important chiral molecules with various applications in medicinal chemistry and chiral technology. However, there is a scarcity of research on ways to synthesize them in an enantioselective (asymmetric) manner, to obtain useful forms of the compounds. Researchers at Shibaura Institute of Technology, Japan, have rectified this, by developing a catalytic enantioselective method to synthesize various N?C axially chiral compounds. A recent article in Accounts of Chemical Research summarizes their achievements. (2021-02-16)

The water surface is a fantastic place for chemical reactions
Using an advanced technique, scientists from the RIKEN Cluster for Pioneering Research have demonstrated that a chemical reaction powered by light takes place ten thousand times faster at the air-water interface--what we usually call the water surface--than in the bulk of the water, even when the light has equivalent energy. This finding could help our understanding of the many important chemical and biological processes that take place at the water surface. (2021-02-15)

Producing more sustainable hydrogen with composite polymer dots
Hydrogen for energy use can be extracted in an environmentally friendly way from water and sunlight, using photocatalytic composite polymer nanoparticles developed by researchers at Uppsala University. In laboratory tests, these 'polymer dots' showed promising performance and stability alike. The study has been published in the Journal of the American Chemical Society. (2021-02-12)

Study reveals platinum's role in clean fuel conversion
Scientists at the US Department of Energy's Brookhaven National Laboratory, Stony Brook University (SBU), and other collaborating institutions have uncovered dynamic, atomic-level details of how an important platinum-based catalyst works in the water gas shift reaction. The experiments provide definitive evidence that only certain platinum atoms play an important role in the chemical conversion, and could therefore guide the design of catalysts that use less of this precious metal. (2021-02-10)

'Defective' carbon simplifies hydrogen peroxide production
Rice University scientists introduce a new catalyst to reduce oxygen to widely used hydrogen peroxide. The process sidesteps complex and expensive processes that generate toxic organic byproducts and large amounts of wastewater. (2021-02-09)

Understanding catalytic couplings: not all synergies are simple
Negishi cross-coupling reactions have been widely used to form C-C bonds since the 1970s and are often perceived as the result of two metals (i.e zinc and palladium/nickel) working in synergy. Researchers from the Martin group at ICIQ have delved into the Negishi cross-coupling of aryl esters using nickel catalysis to understand how this reaction works at the molecular level and how to improve it. The results have been published in Nature Catalysis. (2021-02-08)

At the core of the Integrator complex
A new paper from the Galej group at EMBL Grenoble describes the structure of key parts of the Integrator complex. This complex, which is composed of multiple protein subunits, is involved in global regulation of the process of transcription, during which the cell's DNA is used as a template to make instructions in the form of RNA. Knowing the structure of the Integrator complex will help scientists to better understand the interactions between its subunits and how it is involved in gene expression. (2021-02-05)

Polymer-derived carbon as metal-free, "green" alternative to catalysts and nano carbons
Darmstadt, February 4, 2021. The research group of Professor Bastian Etzold at the Department of Chemistry at TU Darmstadt has succeeded in synthesizing macroscopic carbons that are similar in handling to common technical catalysts. The research team has now published its results in the renowned journal Angewandte Chemie and demonstrated that these carbons can achieve the high catalytic activity and selectivity that otherwise only nanocarbons can. (2021-02-04)

Mysterious organic scum boosts chemical reaction efficiency, may reduce chemical waste
Chemical manufacturers frequently use toxic solvents such as alcohols and benzene to make products like pharmaceuticals and plastics. Researchers are examining a previously overlooked and misunderstood phenomenon in the chemical reactions used to make these products. This discovery brings a new fundamental understanding of catalytic chemistry and a steppingstone to practical applications that could someday make chemical manufacturing less wasteful and more environmentally sound. (2021-02-04)

Hydrogen-producing enzyme protects itself against oxygen
Hydrogen-producing enzymes are beacons of hope in biohydrogen research. However, they are so vulnerable to oxygen in the air that it has not been possible to exploit their potential on a larger scale. The recently discovered [FeFe]-hydrogenase CbA5H from the bacterium Clostridium beijerinckii resists the oxygen attack. (2021-02-02)

Researchers create novel photonic chip
Researchers at the George Washington University and University of California, Los Angeles, have developed and demonstrated for the first time a photonic digital to analog converter without leaving the optical domain. Such novel converters can advance next-generation data processing hardware with high relevance for data centers, 6G networks, artificial intelligence and more. (2021-02-02)

Oncotarget: The pro-apoptotic actions of 2-methoxyestradiol against ovarian cancer
The objective of this Oncotarget study was to elucidate the molecular mechanism of actions of 2MeOE2, a known microtubule disrupting agent, in inducing apoptosis in ovarian tumors (2021-02-01)

Researchers reveal in-situ manipulation of active Au-TiO2 interface
An international joint research team from the Shanghai Advanced Research Institute of the Chinese Academy of Sciences, along with Zhejiang University and the Technical University of Denmark, reported an in-situ strategy to manipulate interfacial structure with atomic precision during catalytic reactions. (2021-01-28)

Tungsten-substituted vanadium oxide breathes fresh air into catalyst technology
Tokyo, Japan - Researchers from Tokyo Metropolitan University have created a new tungsten-substituted vanadium oxide catalyst for breaking down harmful nitrogen oxides in industrial exhaust. Their new catalyst material works at lower temperatures and does not suffer major drops in performance when processing ''wet'' exhaust, resolving a major drawback in conventional vanadium oxide catalysts. They found that the unaggregated dispersal of atomic tungsten in the original crystal structure plays a key role in how it functions. (2021-01-26)

Scientists developed energy saving ceramic phosphors for high power LED systems
Materials scientists of Far Eastern Federal University (FEFU), in collaboration with an international research team, have advanced the design of composite ceramic materials (Ce3+:YAG-Al2O3), i.e. solid-state light converters (phosphors) that can be applied in ground and aerospace technologies. The LED systems based on the developed materials to save 20-30 percent more energy compared to commercial analogues. A related article was published in Materials Characterization. (2021-01-26)

Boosting the efficiency of carbon capture and conversion systems
Researchers at MIT have developed a method to boost the performance of carbon capture systems that use catalytic surfaces to enhance the rates of carbon-sequestering electrochemical reactions. (2021-01-25)

Single atoms as a catalyst: Surprising effects ensue
Catalysts are getting smaller - ''single-atom'' catalysts are the logical end point of this downsizing. However, individual atoms can no longer be described using the rules developed from larger pieces of metal, so the rules used to predict which metals will be good catalysts must be revamped - this has now been achieved at TU Wien. As it turns out, single atom catalysts based on much cheaper materials might be even more effective. (2021-01-22)

Teamwork in a molecule
Chemists at the Friedrich Schiller University Jena have demonstrated the value of 'teamwork' by successfully harnessing the interaction between two gallium atoms in a novel compound to split the particularly strong bond between fluorine and carbon. The gallium compound is also cheaper and more environmentally friendly than conventional alternatives. (2021-01-21)

Researchers make domestic high-performance bipolar membranes possible
A team led by Prof. XU Tongwen and Prof WU Liang from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) adopted an in-situ growth idea to construct a stable and efficient membrane (2021-01-21)

Giving the hydrogen economy an acid test
Tsukuba University scientists show that the effectiveness of hydrogen-producing metal catalysts protected by graphene depends on the ability of protons to penetrate into the inner metallic surface. This work may lead to widely available hydrogen-powered cars. (2021-01-14)

Catalyticity of molybdenum-dinitrogen complexes in organic reactions
Molybdenum dinitrogen complexes supported by monodentate arylsilylamido ligand, [Ar(Me3Si)N]3MoN2Mg(THF)2[N(SiMe3)Ar] and [Ar(Me3Si)N]3MoN2SiMe3 (Ar = 3,5-Me2C6H3) were synthesized and structurally characterized, which were proved to be effective catalysts for the disproportionation of cyclohexadienes and isomerization of terminal alkenes. 1H NMR spectrum suggested that the bridging nitrogen ligand remains intact during the catalytic reaction, indicating the possible catalytic ability of Mo-N=N motif. (2021-01-14)

Catalysts: worth taking a closer look
Metal surfaces play a role as catalysts for many important applications - from fuel cells to the purification of car exhaust gases. However, their behaviour is decisively affected by oxygen atoms incorporated into the surface. This phenomenon has been known for a long time, but until now it has been impossible to precisely investigate the role of oxygen in complex surfaces point by point in order to understand the chemical background at the atomic level. (2021-01-13)

Study shows tweaking one layer of atoms on a catalyst's surface can make it work better
When an LNO catalyst with a nickel-rich surface carries out a water-splitting reaction, its surface atoms rearrange from a cubic to a hexagonal pattern and its efficiency doubles. Deliberately engineering the surface to take advantage of this phenomenon offers a way to design better catalysts. (2021-01-11)

Expanding the boundaries of CO2 fixation
Design and realization of synthetic enzymes open up an alternative to natural photorespiration (2021-01-09)

Nanocrystals that eradicate bacteria biofilm
POSTECH-UNIST joint research team finds ways to control the surface texture of nanostructures. (2021-01-08)

Better together: Scientists discover applications of nanoparticles with multiple elements
As catalysts for fuel cells, batteries and processes for carbon dioxide reduction, alloy nanoparticles that are made up of five or more elements are shown to be more stable and durable than single-element nanoparticles. (2021-01-04)

Researchers regenerate deactivated catalyst in methanol-to-olefins process
Researchers from DICP regenerated deactivated catalyst in industrially important methanol-to-olefins (MTO) process by directly transforming the coke deposited on the zeolite catalyst to active intermediates rather than burning off to carbon oxide. (2021-01-04)

DUAL takes AI to the next level
Scientists at DGIST in Korea, and UC Irvine and UC San Diego in the US, have developed a computer architecture that processes unsupervised machine learning algorithms faster, while consuming significantly less energy than state-of-the-art graphics processing units. The key is processing data where it is stored in computer memory and in an all-digital format. The researchers presented the new architecture, called DUAL, at the 2020 53rd Annual IEEE/ACM International Symposium on Microarchitecture. (2020-12-30)

Turning the heat down: Catalyzing ammonia formation at lower temperatures with ruthenium
Scientists at Tokyo Institute of Technology (Tokyo Tech) report that the metal ruthenium, supported with lanthanide oxyhydrides, can efficiently catalyze the synthesis of ammonia at a much lower temperature than the traditional approach. In their new study, they highlight the advantages of the oxyhydride support and its potential in becoming a feasible catalyst for low-temperature ammonia synthesis in the future. (2020-12-23)

New catalytic approach to accessing key intermediate carbocation
This study revealed the development of a novel iridium based catalyst. The catalyst is capable of accessing the carbocation intermediates of the reaction to achieve an unprecedented level of regioselectivity (>95%) and enantioselectivity (98%). This technology will have far-reaching implications in synthetic, organic, and pharmaceutical chemistry. (2020-12-21)

Fungal RNA viruses: Unexpected complexity affecting more than your breakfast omelet
Traditional approaches for studying fungal RNA viruses have relied upon sequence similarity, resulting in an underestimation of RNA viral genome diversity. Researchers from the University of Tsukuba used an advanced technological approach called Fragmented and Primer Ligated Double Stranded RNA sequencing, or FLDS, to identify viral sequences that were previously overlooked. They identified novel viruses and viral genome structures and show that FLDS is a powerful tool for understanding RNA viral genome diversity. (2020-12-21)

Three-dimensional view of catalysts in action
For understanding the structure and function of catalysts in action, researchers of Karlsruhe Institute of Technology (KIT), in cooperation with colleagues from the Swiss Light Source SLS of Paul Scherrer Institute (PSI) in Switzerland and the European Synchrotron Radiation Facility (ESRF) in France, have developed a new diagnostic tool. Operando X-ray spec-troscopy visualizes the structure and gradients of complex technical catalysts in three dimensions, thus allowing us to look into functioning chemical reactors. (2020-12-17)

Research breakthrough could transform clean energy technology
A team of researchers has developed a new method of harnessing solar energy, moving us closer to a clean energy future. (2020-12-17)

How water helps the substrate into the enzyme
Researchers from Bochum and Berkeley have investigated why cages can increase the catalytic activity of enclosed molecules. Using terahertz spectroscopy and complex computer simulations, they showed that water encapsulated in a tiny cage has special properties - that are structurally and dynamically distinct from any known phase of water. The water forms a droplet inside the cage that facilitates the encapsulation of a host molecule, i.e. to access the catalytic centre. (2020-12-15)

Catalytic activity of individual cobalt oxide nanoparticles determined
Precious metal-free nanoparticles could serve as powerful catalysts in the future, for example for hydrogen production. To optimize them, researchers must be able to analyze the properties of individual particles. A new method for this has been suggested by a team from Ruhr-Universit├Ąt Bochum and from the University of Duisburg-Essen. The group developed a method using a robotic arm that allows them to select individual particles under an electron microscope and place them on a nanoelectrode for electrochemical analysis. (2020-12-15)

Having it both ways: a combined strategy in catalyst design for Suzuki cross-couplings
cientists at Tokyo Institute of Technology (Tokyo Tech) have designed a novel catalyst for the Suzuki cross-coupling reaction, which is widely used in the synthesis of industrial and pharmaceutical organic chemicals. Their strategy of loading an intermetallic Pd compound onto a support sharing the same element yields a stable and cost-effective catalyst that outperforms commercially available alternatives. (2020-12-02)

Breaking the rules of chemistry unlocks new reaction
Scientists have broken the rules of enzyme engineering to unlock a new method for creating chemical reactions that could unlock a wide range of new applications -- from creating new drugs to food production. (2020-12-01)

N-heterocyclic phosphines: promising catalysts for transfer hydrogenation
N-heterocyclic phosphines (NHPs) have recently emerged as a new group of promising catalysts for metal-free reductions, owing to their unique hydridic reactivity. Compared with the conventional protic reactivity of phosphines, this umpolung P-H reactivity leads to inverse selectivity in NHP-mediated reductions, which has therefore found many applications in the catalytic reduction of polar unsaturated bonds. This review summarizes recent progress in studies of the reactivity and synthetic applications of these phosphorus-based hydrides. (2020-11-30)

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