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159 Current news about the topic chemical reactions

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Lightning and subvisible discharges produce molecules that clean the atmosphere

04-May-2021

Lightning bolts break apart nitrogen and oxygen molecules in the atmosphere and create reactive chemicals that affect greenhouse gases. Now, a team of atmospheric chemists and lightning scientists have found that lightning bolts and, surprisingly, subvisible discharges that cannot be seen by ...

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How acidic are atoms?

Precisely understand and improve chemical properties of surfaces

30-Apr-2021

The acidity of molecules can be easily determined, but until now it was not possible to measure this important property for atoms on a surface. With a new microscopy technique from the Vienna University of Technology (TU Wien), this has now been achieved. The degree of acidity or alkalinity of a ...

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Improved Catalyst May Translate to Petrochemical Production Gains

A New and Improved Zeolite Could Mean Greater Yield and Longer Lifecycles for Petrochemical Catalysts

29-Apr-2021

Aromatics are major building blocks of polymers, or plastics, that turn up as everything from PET bottles for water to breathable, wrinkle-resistant polyester clothing. These petrochemicals comprise a specialized, value-added sector of the energy industry. The process for refining crude oil into ...

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Sustainable chemical synthesis with platinum

A new catalyst allows wood to replace petroleum in hydrocarbon synthesis

26-Apr-2021

Researchers used platinum and aluminum compounds to create a catalyst which enables certain chemical reactions to occur more efficiently than ever before. The catalyst could significantly reduce energy usage in various industrial and pharmaceutical processes. It also allows for a wider range of ...

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Coated white pigment is catalytically active

Coating of Single Atomic Layers for Zinc Sulfide

26-Mar-2021

It is one of the softest white pigments used by the industry. However, zinc sulfide turns gray over time if it is not appropriately pretreated. Chemists under the leadership of the Center for Nanointegration (CENIDE) at the UDE discovered a way to retain its brilliant color and also enable its ...

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Virtual lab finds the right AI tool for each chemistry problem

"Autonomous systems have tremendous potential for accelerating chemical R&D and manufacturing"

24-Mar-2021

Having the right tool for the job makes the job a lot easier, less expensive and faster. Chemical engineering researchers have now developed a virtual laboratory that can be used to determine the artificial intelligence (AI) tools best suited for addressing various chemical synthesis challenges ...

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Discovery of 'knock-on chemistry' opens new frontier in reaction dynamics

New experimental findings cast in doubt 90-year-old theoretical model of the transition state in chemical reactions

18-Mar-2021

Research by a team of chemists at the University of Toronto, led by Nobel Prize-winning researcher John Polanyi, is shedding new light on the behaviour of molecules as they collide and exchange atoms during chemical reaction. The discovery casts doubt on a 90-year old theoretical model of the ...

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Scientists probe electronic angular momentum to a chemical reaction for the first time

01-Mar-2021

A chemical reaction can be understood in detail at the quantum state-resolved level, through a combined study of molecular crossed beam experiments and theoretical quantum molecular reaction dynamics simulations. At a single collision condition, the molecular crossed beam apparatus is able to ...

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Tuning electrode surfaces to optimize solar fuel production

An electrode material with modified surface atoms generates more electrical current, which drives the sunlight-powered reactions that split water into oxygen and hydrogen

24-Feb-2021

Scientists have demonstrated that modifying the topmost layer of atoms on the surface of electrodes can have a remarkable impact on the activity of solar water splitting. As they reported in Nature Energy on Feb. 18, bismuth vanadate electrodes with more bismuth on the surface (relative to ...

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Ultrafast Electron Dynamics in Space and Time

"We believe that our findings represent a crucial breakthrough towards the goal of tracing electrons through chemical reactions in space and time"

22-Feb-2021

In textbooks and explanatory videos, they are often depicted as colourful balloons or clouds: electron orbitals provide information on the whereabouts of electrons in molecules, a bit like fuzzy snapshots. In order to understand the exchange of electrons in chemical reactions, it is not only ...

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