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First-ever Climate Grand Challenges recognizes 27 finalists

All-carbon buildings, climate-resilient crops, and new tools to improve the prediction of extreme weather events are just a few of the 27 bold, ....

William Green , Danielle Wood , Steven Barrett , Elfatih Eltahir , Siqi Zheng , Dara Entekhabi , Yogesh Surendranath , Mark Goulthorpe , R John Hansman , John Aldridge , Christopher Hill , Dharik Mallapragada , Brent Minchew , Janelle Knox Hayes , Anantha Chandrakasan , Noelle Eckley Selin , Daniela Rus , Kerry Emanuel , Bradford Hager , Tami Lieberman , Eric Gordon , James Paradis , Yuly Fuentes Medel , Evan Lieberman , Robert Stoner , Claire Walsh ,

A mild way to upcycle plastics used in bottles into fuel and other high-value products

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Plastic is ubiquitous in people s lives. Yet, when plastic-containing items have fulfilled their missions, only a small amount is recycled into new products, which are often of lower quality compared to the original material. And, transforming this waste into high-value chemicals requires substantial energy. Now, researchers reporting in ACS
JACS Au have combined a ruthenium-carbon catalyst and mild, lower-energy reaction conditions to convert plastics used in bottles and other packaging into fuels and chemical feedstock.
Global production of sturdy, single-use plastic for toys, sterile medical packaging, and food and beverage containers is increasing. Polyolefin polymers, such as polyethylene and polypropylene, are the most common plastics used in these products because the polymers molecular structures long, straight chains of carbon and hydrogen atoms make materials very durable. It s difficult to degrade the carbon-to-carbon bonds in polyolefins, h ....

United States , Department Of Energy , District Of Columbia , Us Congress , Manufacturing Office , Bioenergy Technologies Office , American Chemical Society , Yuriy Rom , Energy Efficiency , Renewable Energy , Advanced Manufacturing Office , Bioenergy Technologies , ஒன்றுபட்டது மாநிலங்களில் , துறை ஆஃப் ஆற்றல் , மாவட்டம் ஆஃப் கொலம்பியா , எங்களுக்கு காங்கிரஸ் , உற்பத்தி அலுவலகம் , உயிர்வேதியியல் தொழில்நுட்பங்கள் அலுவலகம் , அமெரிக்கன் இரசாயன சமூகம் , யூரி ரோம் , ஆற்றல் செயல்திறன் , புதுப்பிக்கத்தக்க ஆற்றல் , உயிர்வேதியியல் தொழில்நுட்பங்கள் ,