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Carbyne transfer Marcos G. Suero and his research group at the Institute of Chemical Research of Catalonia (ICIQ; Tarragona, Spain; www.iciq.es) have reported a new reaction that inserts a monovalent carbon unit between both sp2-hybridized carbons of alkenes. For the…

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Underground oxidation of hydrocarbons and gas separation yields hydrogen

A process for in-situ oxidation of hydrocarbons in low-quality oilfields, and subsequent gas separation, offers a path to generating hydrogen for fuel and chemicals that avoids any greenhouse gas emissions. Known as Hygienic Earth Energy (HEE), the process has been…

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Reduction of carbon dioxide to methane

Electrochemical reduction of carbon dioxide to hydrocarbons and oxygenates on copper involves reduction to a carbon monoxide adsorbate followed by transformation to hydrocarbons and oxygenates. To ensure the sustainability of the process, the electrochemical CO2 reduction is typically conducted in…

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Multi-state switchable stationary phase for chiral separation

High-pressure liquid chromatography (HPLC) using a chiral stationary phase (CSP) is the most effective method for separating enantiomers of chiral molecules. However, the limited number of CSPs available puts a constraint on applying this technology universally. Now, researchers from the…

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Ionic liquids enable lower-cost desalination with forward osmosis

Membrane-based forward osmosis (FO) desalination could be a lower-cost alternative to conventional reverse osmosis (RO) technology, which can desalinate ocean water effectively, but requires electricity to drive the separation, and so remains expensive. Scientists from Lawrence Berkeley National Laboratory (LBL;…

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Chementator Briefs

Nanofiltration Toray Industries, Inc. (Tokyo, Japan; www.toray.com) has created what is claimed to be the world’s highest-level nanofiltration membrane. The new membrane triples the permeation performance of conventional models while enhancing ion and organic-compound separation from aqueous solutions. In developing…

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Stabilized, purified silk protein serves as green chemistry platform

Scientists have long sought ways to take advantage of the high strength of natural silk protein in new materials, but its incorporation has been hindered by the inability to stabilize the protein in water. Now, a company known as Evolved…

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Integrated e-waste processing facility nears completion

Although it contains many valuable metals, electronic waste (e-waste) is an exceedingly difficult material stream to process, and the vast majority of e-waste is not recycled. EnviroLeach Technologies Inc. (Vancouver, B.C.; www.enviroleach.com) is currently preparing to start up a first-of-its-kind…

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This multifunctional photocatalyst splits water with visible light

Oxysulfide semiconductors have narrow bandgaps — a property that makes them suitable photocatalysts for water splitting under irradiation with visible light (640 nm wavelength). That’s because the electronegative sulfide ions negatively shift the valence band edges of the corresponding oxides.…

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The outlook for hydrogen as an energy carrier

Many countries are now making rapid advances in hydrogen energy technologies and strategy, and the rest of the world has much to learn from their experience, according to a new report — Advancing Hydrogen — compiled by a team from…