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Making graphene oxide in ‘a microwave’

Microwave irradiation of graphite has been shown to produce graphene oxide with 90% yield by the research group of professor Yuta Nishina, Research Core for Interdisciplinary Sciences, Okayama University (Okayama, www.tt.vbl.okayama-u.ac.jp/archives/809). The yield is not only nearly twice that obtained…

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A renewable source for methane

Conventional methanation — the reaction of CO and H2 (synthesis gas) to form methane — has recently become important as a way to produce substitute natural gas (SNG) from gasified coal in regions of the world where natural gas is…

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Making cork-like monoliths from graphene

A team from Monash University (Melbourne, Australia; www.monash.edu.au) has prepared graphene monoliths with a cork-like hierarchical structure, exhibiting ultra-low density, superelasticity, good electrical conductivity and high efficiency of energy absorption. The ability to maintain structural integrity upon large deformation is…

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A recipe for improved Ti extraction from ilmenite

Existing metallurgical processes for titanium production from ilmenite — by far the most sought-after titanium ore — are plagued by disadvantages, mainly the generation of large amounts of waste, and improvements are needed to treat ilmenite for the production of…

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Replacing a pressurization blower with a turbocharger reduces energy use

Reductions in power consumption by over 30% have been observed at a full-scale formaldehyde production plant by introducing a new design in which a pressurization blower is replaced by a turbocharger that is powered by the exhaust gas from the…

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A continuous process to make graphene

An inexpensive and scalable process that uses supercritical (SC) liquids to make large quantities of graphene is being developed by the group of professor Itaru Honma at the Institute of Multidisciplinary Research for Advanced Materials, Tohoku University (Sendai; db.tagen.tohoku.ac.jp), in…

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A bi-metallic nanocluster catalyst for highly selective asymmetric C–C formation

Shu Kobayashi and his research group at the University of Tokyo (Japan; www.chem.s.u-tokyo.ac.jp/users/synorg/index_e.html) have developed a ruthenium-silver nanocluster catalyst for the highly selective 1,4-addition reaction for the formation of asymmetric carbon-carbon bonds. Previously, the group had used its polymeric incarceration…

Valve position indicators that tell more than just on or off

  The 2040 digital position indicator uses a colored light signal, visible from a distance, to show the open or closed position of a valve. Four different color signals are used: open and closed by yellow and green. At the…

Direct-acting solenoid valves for use in harsh environments

Introduced last month, these two intrinsically safe solenoid valves (photo) have Ex ia IIC T6 certification. The solenoid operators are designed for use on the 327 range of direct-operated solenoid valves, and are available in epoxy-coated aluminum or stainless steel.…

A mixer equipped with special finger blades

A new agitator-blade design for this company’s Double Planetary Mixer features two identical rectangular stirrers with upward rake fingers. Designed to rotate on their own axes, while also orbiting the mixing vessel on a common axis, the stirrers are ideal…