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By Fernando Gomollón-Bel2021-05-06T13:30:00+01:00
Source: © Angelika Samu/University of Szeged
The flow chemistry apparatus developed by researchers at the University of Szeged in Hungary can reduce carbon dioxide more efficiently than other methods
Electrochemical reduction of carbon dioxide is an attractive solution to combat climate change. Now, researchers at the University of Szeged, in Hungary, have discovered an integrated solution to tackle this reaction in continuous flow, overcoming long-term stability problems and enabling a scalable process.
Using electricity to valorise carbon dioxide has fulfilled a dual purpose. It decreases emissions and, at the same time, offers the chemical industry an alternative carbon source to manufacture valuable raw chemicals, such as carbon monoxide, formic acid and methanol. However, several hurdles have blocked the adoption of these technologies. Among other things, it requires a very basic reaction environment, which contributes to
Producing Biobased Polyesters with Tunable Properties
Written by AZoMMar 3 2021
As far as green chemistry is concerned, identifying novel and lasting solutions to the material needs is one of the main targets.
CIQ ACS kleij ginger root. Image Credit: ICIQ/Francesco Della Monica.
The countless plastics used by people in their everyday life, right from mattresses to food and cars, are mainly made from oil-based monomers that form the building blocks of polymers. Determining bio-based monomers for polymer synthesis is an appealing way to realize more lasting solutions in the area of materials development.
In a study published in the
ACS Sustainable Chemistry & Engineering journal, scientists from the Kleij group describe a new method to make biobased polyesters with tunable properties. The team has been developing the multifunctional structure of the terpene β-elemene: three double bonds that exhibit unique reactivity, thus enabling a selective transformation of such bonds and h
It is these extreme confinement effects that ‘enables us to do chemistry that we can’t do in traditional ways’, says Angela Grommet from the Weizmann Institute of Science in Israel who recently wrote a review
2 on the topic. After 35 years of research, chemists are now starting to unlock the potential of confinement by designing molecular cages that fold up long molecules into huge macrocycles, or creating cavities that can separate deuterium from hydrogen. In the future, confined spaces could rival enzymes in their ability to catalyse reactions or protect unstable species, turning them into useful reagents.
It all started with the discovery of carcerands more than three decades ago. Donald Cram wanted to take the chemistry of crown ethers – flat, circular molecules that can capture individual metal atoms on their inside – into the third dimension. In 1985, he functionalised big cyclic molecules so pairs of them could be brought together to form a capsule. Cram called the
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