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Current Chemical Reaction News and Events, Chemical Reaction News Articles.
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Illuminating nanoparticle growth with X-rays
Ultrabright X-rays at NSLS-II reveal key details of catalyst growth for more efficient hydrogen fuel cells. (2018-12-26)

The development of a hybrid micro mixer for biological and chemical experiments
An international team of scientists including an employee of I.M. Sechenov First Moscow State Medical University (MSMU) developed a device for mixing chemical and biological reaction feeds. The team managed to increase the mixing efficiency up to 90 percent. The new device will be used in biological and chemical experiments. The article of the scientists was published in the RSC Advances journal. (2018-12-22)

Researchers monitor electron behavior during chemical reactions for the first time
In a recent publication in Science, researchers at the University of Paderborn and the Fritz Haber Institute Berlin demonstrated their ability to observe electrons' movements during a chemical reaction. (2018-12-21)

'Frozen' copper behaves as noble metal in catalysis: study
A new study by scientists from the Dalian Institute of Chemical Physics shows that the electron structure of Cu can be changed, assisted by high energy plasma, making Cu exhibit significantly different catalytic behaviors than normal Cu in selective hydrogenation reactions. (2018-12-21)

Chemical synthesis breakthrough holds promise for future antibiotics
University of Colorado Boulder chemistry researchers have developed a novel way to synthesize and optimize a naturally-occurring antibiotic compound that could one day be used to fight lethal drug-resistant infections such as Staphylococcus aureus, commonly known as MRSA. (2018-12-20)

Enzyme's unfrozen adventure: In crystallo protein thermodynamics
Osaka University researchers and collaborators have reported the first in crystallo thermodynamic analysis of copper amine oxidase catalysis using a non-cryocooled technique. The method, which analyzes protein crystals coated with a water-soluble polymer, rather than cryogenically cooled crystals, can be temperature-controlled, allowing for conformational changes to be monitored over a range of temperatures. Additionally, the conditions show parallels with the cytosol, meaning that the approach could provide a useful model for protein behavior in cells. (2018-12-20)

Scientists find nanoparticles with peculiar chemical composition
An international team from Russia and China discovered a host of new and unexpected nanoparticles and found a way to control their composition and properties the findings that break fresh ground in the use of nanoparticles. (2018-12-20)

How kimchi gets its kick (video)
Kimchi, the fermented cabbage dish beloved in Korea and around the world, has a signature pungent, sour tang. Those unique flavors come from not only salt and spices but also fermentation by friendly microbes. In this video, Reactions explores the chemistry of why kimchi is so delicious and even tries to make a batch: https://youtu.be/DG4afs7C1XI. (2018-12-20)

A lung-inspired design turns water into fuel
Scientists at Stanford University have designed an electrocatalytic mechanism that works like a mammalian lung to convert water into fuel. Their research, published Dec. 20 in the journal Joule, could help existing clean energy technologies run more efficiently. (2018-12-20)

Chemical catalyst turns 'trash' into 'treasure,' making inert C-H bonds reactive
The Nature paper is the latest in a series from Emory University demonstrating the ability to use a dirhodium catalyst to selectively functionalize C-H bonds in a streamlined manner, while also maintaining virtually full control of the three-dimensional shape of the molecules produced. (2018-12-19)

Dicationic ionic liquid & its application in the synthesis of xanthenediones
An efficient solvent-free method for the synthesis of xanthenediones has been developed in the presence of [(EtNH2)2SO][HSO4]2 as a powerful catalyst with high to excellent yields, and short reaction times. Additionally, recycling studies have demonstrated that the dicationic ionic liquid can be readily recovered and reused at least four times without significant loss of its catalytic activity. (2018-12-18)

TiO2 NP & catalyst for the synthesis of benzopyrano benzopyranone and xanthenol in water
In this research, TiO2-CNTs were used as an efficient recyclable catalyst for the synthesis of [1]benzopyrano[b][1]benzopyran-6-ones and xanthenols by the pseudo three-component reaction of salicylaldehydes with active methylene compounds including 4-hydroxycoumarin (4- hydroxy-2H-1-benzopyran-2-one) or 3,4-methylenedioxyphenol. The introduced method is mild, environmentally benign and effective to give the products in high yields and in short reaction times. (2018-12-18)

KU Leuven researchers use sound waves to prevent small chemical reactors from clogging up
Companies are keen to use miniature chemical reactors to make pharmaceuticals and fine chemicals, but are discouraged by their tendency to clog up. Researchers at KU Leuven, Belgium, have now devised an elegant way of using sound waves to keep the chemicals flowing. (2018-12-18)

The vanished mirror image
Enantiomeric molecules resemble each other like right and left hands. Both variants normally arise in chemical reactions. But frequently only one of the two forms is effectual in biology and medicine. Hitherto, completely converting this mixture into the desired enantiomer was deemed impossible. Deploying a photochemical method, a team from the Technical University of Munich (TUM) has now achieved this feat. (2018-12-18)

Greener days ahead for carbon fuels
A discovery by researchers at the US Department of Energy's Lawrence Berkeley National Laboratory and the Joint Center for Artificial Photosynthesis shows that recycling carbon dioxide into valuable chemicals and fuels can be economical and efficient -- all through a single copper catalyst. (2018-12-18)

Nature's sweets
Synthetic chemists, like overzealous nutritionists, usually avoid sugars. Nature, an expert chemist, can shift the sweets from one molecule to another with enviable finesse. But in the lab, scientists struggle to attach just one sugar molecule to another chemical unit, a process known as glycosylation. Now, researchers have unearthed nature's sweet secret, which could lead to improved chemical synthesis, vaccines, and even life-saving drugs. (2018-12-17)

Chinese scientists get first look at geometric phase effect in a chemical reaction
Researchers from the University of Science and Technology of China and the Dalian Institute of Chemical Physics carried out a combined experimental and theoretical investigation of the H+HD to H2+D reaction. They got first look at geometric phase effect in a chemical reaction. (2018-12-13)

NYU researchers pioneer machine learning to speed chemical discoveries, reduce waste
Researchers have combined artificial neural networks with infrared thermal imaging to control and interpret chemical reactions with new precision and speed. Novel microreactors allow chemical discoveries to take place quickly and with far less environmental waste than standard large-scale reactions. The system can reduce the decision-making process about certain chemical manufacturing processes from one year to a matter of weeks, saving tons of chemical waste and energy in the process. (2018-12-13)

Plants' defense against insects is a bouquet
Michigan State University scholar Andrea Glassmire and her colleagues have revealed how the mixture of chemical weapons deployed by plants keeps marauding insects off base better than a one-note defense. This insight goes beyond the ecological convention of studying a single chemical compound a plant is packing and offers new ways to approach agricultural pest management. The research was published in today's Ecology Letters. (2018-12-13)

Light-induced modification of a carboxylic acid with an aminocyclopropenone
Researchers at Kanazawa University report in The Journal of Organic Chemistry that carboxylic acids, functional groups contained in biomolecules, drugs, and materials can be readily modified by light-induced organic reactions using an aminocyclopropenone. This discovery opens up new pathways for carboxylic acid modification with potential applications including determination of drug target proteins, elucidation of protein function, and synthesis of functionalized polymer materials. (2018-12-12)

Pitt chemical engineers advance olefins production through computational modeling
New research from the University of Pittsburgh's Swanson School of Engineering has introduced a method to effectively screen different catalysts that convert light alkanes to olefins. With light alkanes being abundant in the Marcellus and Utica shale reserves, this methodology may provide a more economical solution for olefins production. (2018-12-12)

Green production of chemicals for industry
Industry consumes large quantities of crude oil to produce basic substances for drugs, cosmetics, plastics, or food. However, these processes consume a lot of energy and produce waste. Biological processes with enzymes are far more sustainable. The protein molecules can catalyze various chemical reactions without auxiliary materials or solvents being required. But they are expensive and, hence, have been economically unattractive so far. Researchers of Karlsruhe Institute of Technology (KIT) have now developed a new biomaterial that considerably facilitates the use of enzymes. (2018-12-11)

Yale chemists find a new tool for understanding enzymes -- Google
In a new study published online this week in the Proceedings of the National Academy of Sciences, chemistry professor Victor Batista and his colleagues used the Google algorithm PageRank to identify key amino acids in the regulation of a bacterial enzyme essential for most microorganisms. (2018-12-11)

How catnip makes the chemical that causes cats to go crazy
Researchers at John Innes Centre have shed light on how catnip -- also known as catmint -- produces the chemical that sends cats into a state of wanton abandon. (2018-12-10)

Carnegie Mellon researchers probe hydrogen bonds using new technique
Researchers at Carnegie Mellon University have used nuclear resonance vibrational spectroscopy to probe the hydrogen bonds that modulate the chemical reactivity of enzymes, catalysts and biomimetic complexes. The technique could lead to the development of better catalysts for use in a wide range of fields. The findings were published as a 'Very Important Paper' in the Dec. 3 issue of Angewandte Chemie and featured on the journal's back cover. (2018-12-07)

Scientists discover possible mantle mineral
Whhat mineral hosts Fe3+ had remained a secret. Now scientists have a possible answer: Maohokite, a newly discovered high-pressure mineral. It may be what composes the Earth's lower mantle along with Bridgmanite MgSiO3 and magnesiow├╝stite MgO. (2018-12-06)

Interactive size control of catalyst nanoparticles
5, 10, or maybe 15? How many nanometers should nanoparticles of a catalyst be to optimize the course of the reaction? Researchers usually look for the answer by laborious, repetitive tests. At the Institute of Physical Chemistry of the Polish Academy of Sciences in Warsaw, a qualitatively new technique was developed to improve the process of such optimization in microfluidic systems. The size of the catalyst nanoparticles can now be changed interactively, during a continuous flow through the catalyst bed. (2018-12-06)

Developing new materials for the fusion reactor
At National Institute for Fusion Science (NIFS) we have newly developed vanadium alloys that is strong at high temperatures and is appropriate for manufacturing and welding. From this, we have shown for the first time in the world the possibility of producing a blanket which will be installed in a future fusion reactor and will be an important equipment for generating electricity. (2018-12-06)

Researchers advance biomass transformation process
Professor WANG Feng from the Dalian Institute of Chemical Physics of the Chinese Academy of Sciences and his colleagues from Peking University recently reported an efficient and novel catalytic method for the conversion of aqueous biomass fermentation broth to a water-immiscible product. (2018-12-05)

A versatile method for the protection of carbonyl compounds by camphorsulfonic acid
In this paper, camphor sulfonic acid-catalysed protection of various carbonyl compounds is developed. This method is simple, environmentally friendly and yields products in high yields. (2018-12-05)

New catalyst achieves unprecedented activities
Researchers have developed a new efficient catalyst to synthesise aromatic amines, which are central building blocks in many drugs and pesticides. The system is more active than conventional catalysts, so less energy is required during the reaction, and also difficult compounds can be synthesized. (2018-12-04)

Chemists created new diagnostic method for difficult climate conditions
Scientists from ITMO University developed a method to detect viral RNA without special equipment. The sensor is based on a polymerization reaction: if the sample contains traces of the target virus, then under the ultraviolet irradiation the liquid-sensor turns into a gel. The results of such an analysis can easily be detected even by people with limited vision. Due to stable reagents the method can be used in difficult field conditions. The results are published in RSC Advances. (2018-12-03)

Great strides for carbon capture using earth-abundant elements as photocatalytic system
Researchers at Tokyo Tech have designed a CO2 reduction method based only on commonly occurring elements. Achieving a 57 percent overall quantum yield of CO2 reduction products, it is the highest performing system of its kind reported to date, raising prospects for cost-effective carbon capture solutions. (2018-11-30)

Greenhouse gas 'detergent' recycles itself in atmosphere: NASA study
A simple molecule in the atmosphere that acts as a 'detergent' to breakdown methane and other greenhouse gases has been found to recycle itself to maintain a steady global presence in the face of rising emissions, according to new NASA research. Understanding its role in the atmosphere is critical for determining the lifetime of methane, a powerful contributor to climate change. (2018-11-30)

Insight into the catalytic activity of MXenes for hydrogen evolution reaction
MXenes have exhibited great potential as cost-effective electrocatalysts for hydrogen evolution reaction (HER). However, insight into the origin of activity is still missing. Herein, on the basis of a systematical investigation of the HER performance of 20 MXenes, a Fermi-abundance model is proposed to understand variation of the activity in different MXenes. It is found that the occupied p electronic states of surface O atoms play a decisive role in the HER activity of MXenes. (2018-11-29)

What's the difference between relative humidity and dew point? (video)
Meteorologists often report the amount of moisture in the air as relative humidity or dew point. These measures can be confusing to people who are just trying to determine if the weather outside will feel comfortable. Both relate to the chemistry of water dissolving in air, but in different ways. In this video, Reactions decodes these weather terms to help you make sense of the forecast: https://youtu.be/GtmOlpbkQDw. (2018-11-29)

Camphorsulfonic acid-catalyzed Michael reaction of indoles with enones
Michael addition reaction is one of the most important and widely used reactions for making carbon-carbon or carbon-hetero bonds in organic synthesis. The reaction involves a facile attack of nucleophile to enone in a conjugated manner across a carbon-carbon double bond. The researchers herein report an expeditious camphor sulfonic acid-catalyzed Michael reaction for the synthesis of different 3-substituted indole derivatives at room temperature. (2018-11-28)

Scientists discovered a set of enzymes to create glowing organisms
There are over 100 species of mushrooms that emit light. Now, scientists have for the first time identified the biochemical pathway that allows bioluminescent fungi to light up. But they went even further: by putting the three genes necessary to generate luminescence into a non-glowing yeast, they created an artificially luminescent eukaryote. Fyodor Kondrashov, professor at the Institute of Science and Technology Austria (IST Austria) was co-author of the study published today in PNAS. (2018-11-28)

Solving a 75-year-old mystery might provide a new source of farm fertilizer
The solution to a 75-year-old materials mystery might one day allow farmers in developing nations to produce their own fertilizer on demand, using sunlight and nitrogen from the air. (2018-11-27)

Mere sunlight can be used to eradicate pollutants in water
Advances in environmental technology: You don't need complex filters and laser systems to destroy persistent pollutants in water. Chemists at Martin Luther University Halle-Wittenberg (MLU) have developed a new process that works using mere sunlight. The process is so simple that it can even be conducted outdoors under the most basic conditions. The chemists present their research in the journal Chemistry -- a European Journal. (2018-11-26)

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