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Proton-Exchange Membranes: Design Strategies for Water Electrolysis

Designing a proton-exchange membrane that will balance the efficiency, durability and safety requirements for hydrogen production requires careful consideration of materials and chemistry Among the ongoing efforts to curb climate change, researchers are actively pursuing the further development of water…

Scaling Industrial Decarbonization with Advanced Membranes

The potential of membrane technology to unlock hybrid and scalable carbon capture, combined with results from early field trials, suggest that advanced membranes will play a crucial role in enabling more widespread adoption of decarbonization strategies It is a truth…

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Carbon-neutral calcium carbonate process uses emissions from steel-making plant

Construction is imminent for a carbon-capture project aimed at reducing CO2 emissions from steel production while producing carbon-neutral calcium carbonate. At the U.S. Steel (Pittsburgh, Pa.; www.ussteel.com) manufacturing facility in Gary, Ind., a carbon-capture system designed by CarbonFree (San Antonio,…

Deepwater RO could cut energy use and environmental impact of seawater desalination

Desalination of seawater with reverse osmosis (RO) membranes is a key technology for addressing water scarcity issues around the globe, but seawater desalination is energy-intensive and the brine discharge can create coastal environmental problems. The company Flocean AS (Oslo, Norway;…

High-performance drive units with cybersecurity built in

Sinamics G220 (photo) is a new multi-purpose, adjustable-speed drive that features built-in technology to reduce harmonics by up to 97% — without the need for an a.c. line reactor or d.c. choke. Sinamics G220 drives have an integrated web server…

Facts At Your Fingertips: Blending and Segregation Mechanisms for Solids

In solids-handling, blending (combining two or more materials to achieve a combined product) and segregation (the separation of particles into distinct zones according to particle size, shape, density or other physical attributes) are competing processes. This one-page reference outlines common…

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Creating ultrathin gold films with the largest continuous area

Thin gold films offer a broad range of benefits for electronics due to their high electrical conductivity and transparency. Current manufacturing methods are unable to achieve gold films thinner than 10 nm, and are also limited in the area and…

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Flow chemistry yields a more sustainable route to isocyanates

The wide range of performance properties of polyurethane foams makes them essential in many consumer goods. Thus, there is much effort going into creating a more environmentally friendly production process for polyurethane’s main building blocks, polyols and isocyanates. While much…

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New sustainable materials from recycled carbon nanotubes

Recycling materials, such as plastics and metals, is an attractive, but challenging path toward sustainable material manufacture. Now, researchers have made a discovery that may have far-reaching implications in material manufacture by positioning carbon nanotube (CNT) fibers as a sustainable…

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Single-step process for electrified ethylene production

Developing sustainable pathways to ethylene — among the world’s most widely used chemicals — is a key element in decarbonizing the process industries. A new electrolysis technology developed by CERT Systems (Toronto, Ont., Canada; www.co2cert.com) can produce ethylene from CO2…