Search results for heterogeneous chemistry

Earth Sciences Nov 2, 2022

Iodine accelerates formation of cloud condensation nuclei in the atmosphere

The natural cycles of exchange of substances between the biosphere and the atmosphere are of major relevance to the Earth's climatic system. Perhaps the best-known example of this is the carbon cycle that involves the transfer ...

Polymers Nov 1, 2022

Harnessing the building blocks of polymer recycling

Polymers are lightweight, durable, and easily processed into fabricated parts, features that promoted polymers to become the most relevant class of engineering materials by volume. However, recycling polymers is a challenge ...

Biochemistry Oct 18, 2022

Using dinitrogen and carbon, researchers synthesize DNA/RNA building block pyrimidines

Elemental nitrogen is essential to agriculture and industry. Today almost all the N atoms in artificial N-containing compounds come from NH3 that is mass produced from the Haber-Bosch process developed at the beginning of ...

Analytical Chemistry Oct 17, 2022

Multiscale dynamical cross-talk in zeolite-catalyzed methanol-to-olefins reaction

Methanol-to-olefins (MTO) conversion, one of the most important reactions in C1 chemistry, has proven to be the most successful non-petrochemical industrialized routes for producing light olefins. Dalian Institute of Chemical ...

Analytical Chemistry Oct 17, 2022

A new method to dehydrogenate alkanes at ambient conditions

The chemical term alkanes, or paraffins, refers to organic compounds that consist of single-bonded carbon and hydrogen atoms, such as methane, ethane, and propane, and several other hydrocarbons. Over the years, alkanes have ...

Polymers Sep 29, 2022

Process converts polyethylene bags, plastics to polymer building blocks

Polyethylene plastics—in particular, the ubiquitous plastic bag that blights the landscape—are notoriously hard to recycle. They're sturdy and difficult to break down, and if they're recycled at all, they're melted into ...

Analytical Chemistry Sep 20, 2022

New chemistry happens when dust meets pollution

It is a new chemistry found to take place in a cloud droplet, a wet aerosol, or on the surface of a dust particle. All that it takes to get started is natural events like dust storms, ocean wave action, volcanic eruptions, ...

Biochemistry Sep 15, 2022

Observing the difference in structural dynamics of 1 nm single-molecules at room temperature for the first time

Chemists' long-held dream of observing the structural dynamics of a single molecule have been now been made possible. Single molecules sized about 1 nanometer exist in a volatile state under ambient conditions. Considering ...

Cell & Microbiology Sep 12, 2022

New technique improves proteoform imaging in human tissue

Investigators led by Neil Kelleher, Ph.D., professor of Medicine in the Division of Hematology and Oncology and of Biochemistry and Molecular Genetics, have developed a new imaging technique that increases the detection of ...

Analytical Chemistry Sep 8, 2022

Unveiling how water and ions impact chemical reactivities at solid-aqueous interfaces

Solid-aqueous interfaces are ubiquitous and essential in a diverse range of natural and man-made systems and processes, from mineral formation, rock weathering and metal corrosion, to the intricate functioning of biological ...

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