Archives :: Chementator

Displaying 221 - 240 of 973 stories.
March 1, 2013
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 collaboration with Showa...
http://www.chemengonline.com/chementator/A-continuous-process-to-make-graphene_10264.html
March 1, 2013
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 (PI) method to form metallic nanoclusters supported on a polystyrene-based...
http://www.chemengonline.com/chementator/A-bi-metallic-nanocluster-catalyst-for-highly-selective-asymmetric-C-C-formation_10265.html
February 1, 2013
An Australian team has developed a new molecular sieve that allows carbon dioxide molecules to be trapped and stored. Contrary to the way molecular sieves usually work, allowing smaller molecules through, the new sieve acts like a trapdoor, and allows larger molecules through, blocking smaller ones. The team, led by professor Paul A. Webley of the University of Melbourne (Australia; www.unimelb.edu.au)...
http://www.chemengonline.com/chementator/This-molecular-sieve-has-a-trapdoor-to-selectively-pass-CO2_10147.html
February 1, 2013
A water-recycling system for the oil-and-gas industries developed by Ecosphere Technologies Inc. (Stuart, Fla.; www.EcosphereTech.com) is designed to destroy bacteria and control corrosion in high-volume wastewater-treatment applications using a proprietary oxidation process. The technology, called Ozonix, improves the mass-transfer efficiency of ozone with a Venturi system in which negative pressure...
http://www.chemengonline.com/chementator/Oxidation-based-water-reuse-technology-that-improves-mass-transfer_10150.html
February 1, 2013
Nitrogen fixation The research groups of Yoshiaki Nishibayashi at the University of Tokyo (Japan; park.itc.u-tokyo.ac.jp/nishiba) and Kazunari Yoshizawa at Kyushu University (Fukuoka, Japan; trout.scc.kyushu-u.ac.jp/yoshizawaJ/indexe.html) have demonstrated the production of silylamine [N(SiMe3)3] from nitrogen gas using an iron-based catalyst. The reaction takes place at room temperature and pressure...
http://www.chemengonline.com/chementator/Chementator-Briefs_10153.html
February 1, 2013
The surface engineering company MesoCoat, Inc. (Euclid, Ohio; www.mesocoat.com) recently started up a facility for manufacturing clad pipe for the oil-and-gas industry that uses the company’s proprietary fusion-cladding technology to apply corrosion-resistant alloys to carbon-steel pipes. Because the cladding can be applied to large areas at very high speeds, the technology can be used to coat much...
http://www.chemengonline.com/chementator/This-pipe-cladding-process-applies-corrosion-resistant-coatings-faster_10157.html
February 1, 2013
An electrochemical process that could cut the energy and cost requirements for stripping carbon dioxide from stack gases by half is being developed at Arizona State University (ASU, Tempe; www.asu.edu). At present the only commercially viable technology is CO2 absorption by monoethanolamine (MEA), says Dan Buttry, chair of ASU’s Department of Chemistry and Biochemistry. However, he notes that a...
http://www.chemengonline.com/chementator/Electrochemistry-may-have-a-future-in-CO2-cleanup_10165.html
February 1, 2013
One of the current methods for dealing with oil spills is through the use of dispersants. These dispersants, however, break oil into small globules that sink into the water, spreading the oil into a wider area, and they have toxic effects on the local marine ecosystem. Now, researchers, led by professor Moses O. Tade at the Dept. of Chemical Engineering at Curtin University (Perth, Western Australia...
http://www.chemengonline.com/chementator/Physical-chemistry-principles-point-to-a-better-way-to-clean-up-oil-spills_10166.html
February 1, 2013
Kinki University (www.kindai.ac.jp) and Naniwa Roki Co. (both Osaka, Japan; www.naniwaroki.co.jp) have developed a continuous process for producing a next-generation solid fuel, called Bio-cokes. The process is being used at a new production facility located at Kinki University Research Institute of Bio-cokes (Eniwa City, Hokkaido), established last December. The new facility has four times the capacity...
http://www.chemengonline.com/chementator/Continuous-production-of-Bio-cokes_10168.html
February 1, 2013
Composite liquid and slurry boiler fuels have been produced from mixtures of various waste materials, such as biomass, coal- and crude-oil-processing residues, wood and other combustible substances, in a collaboration between researchers at the University of Rhode Island (Kingston, R.I.) and Podgorny Institute (Kharkov, Ukraine). The researchers have formed a company, InEnergy LLC (Naples, Fla....
http://www.chemengonline.com/chementator/New-boiler-fuels-from-oil-coal-and-biomass-wastes_10169.html
February 1, 2013
Researchers at the U.S. Dept. of Energy’s (DOE) Ames Laboratory (Ames, Iowa; www.ameslab.gov) led by Ryan Ott have developed a process for recovering rare-earth (RE) metals from magnet scraps. The process involves first crushing neodymium-iron-boron magnet scraps and placing the pieces in a stainless steel crucible, to which chunks of magnesium metal are added. The apparatus is heated in a...
http://www.chemengonline.com/chementator/A-process-for-recovering-rare-earth-metals-from-magnet-scrap_10170.html
February 1, 2013
For the first time, it has become possible to spin carbon nanotubes (CNTs) into a fiber that looks and acts like textile threads, yet has the electrical conductivity and strength of a metal. The breakthrough, which came after more than ten years of research, was published in the January 11 issue of Science by scientists from Rice University (Houston; www.rice.edu), Teijin Aramid B.V. (Arnhem, The...
http://www.chemengonline.com/chementator/Spun-carbon-nanotube-fibers-with-unmatched-properties-of-any-other-material_10171.html
January 1, 2013
  Soy polyurethanes Scientists at Battelle (Columbus, Ohio; www.battelle.org) have developed a water-based polyurethane (PU) that uses soy oil instead of petroleum to produce the polyol precursor. Whereas standard water-based PUs require adding N-methyl-2-pyrrolidone (NMP) tolower viscosity, Battelle's process eliminates the need for NMP, thereby reducing costs, handling, reporting regulations, vapors...
http://www.chemengonline.com/chementator/Chementator-Briefs_10053.html
January 1, 2013
Researchers at the U.S. National Institute of Standards and Technology (NIST; Gaithersburg, Md.; www.nist.gov) have developed a relatively simple, fast and effective method of depositing uniform, ultrathin layers of platinum atoms onto a surface. The technique may lead to a reduction in the amount of precious metal needed for catalyst applications, such as catalytic converters in automobiles and hydrogen...
http://www.chemengonline.com/chementator/A-low-cost-route-to-ultrathin-Pt-films_10058.html
January 1, 2013
A research team is using clusters of gold atoms at sub-nanometer sizes to enhance the photocatalytic production of hydrogen from water. Sustainable H2 production from a non-fossil-fuel source could have significant environmental and energy-efficiency benefits. The...
http://www.chemengonline.com/chementator/Nanoparticles-help-generate-hydrogen_10060.html
January 1, 2013
Plans are underway to field-test a process that removes more than 90 % of the carbon dioxide from power-plant flue gas, while reducing both the energy input and operating costs by 50 % compared to conventional amine-based CO2-scrubbing technology. The so-called carbonate-looping process has undergone four years of testing in a 1 MWth pilot plant at the Technical University of Darmstadt (Germany...
http://www.chemengonline.com/chementator/Scale-up-planned-for-a-new-CO2-capture-process_10066.html
January 1, 2013
A small-scale ceramic membrane reactor to convert natural gas to transportable liquids in a single step is being developed by Ceramatec, Inc. (Salt Lake City, Utah; www.ceramatec.com) under a $1.7-million grant from the U.S. Dept. of Energy’s Advanced Research Project Agency (ARPA, Washington, D.C.; www.doe.gov). The goal is to monetize the...
http://www.chemengonline.com/chementator/Membrane-reactor-may-reduce-wastage-of-natural-gas_10067.html
January 1, 2013
The research group of Masahiro Murakami at Kyoto University (Kyoto, Japan; www.sbchem.kyoto-u.ac.jp/murakami-lab) have synthesized a promising pharmaceutical precursor using only sunlight (as energy source) and CO2 (as co-reagent). The solar-driven process involves two consecutive reactions (diagram): first, light transforms an alpha-methylamino ketone into an energized, cyclic...
http://www.chemengonline.com/chementator/Using-sunlight-to-incorporate-CO2-into-alpha-amino-ketones_10068.html
January 1, 2013
Cationic polymers have been used in the petroleum industry as shale-control agents, demulsifiers, blocking agents, and filtrate reducers for drilling fluids, but process complexity and high cost have limited their application. Now researchers from Zhejiang Normal University (Jinhua; www.zjnu.edu.cn) and Shandong University (Jinhua, both China; www.sdu.edu.cn) have reported the preparation of a...
http://www.chemengonline.com/chementator/A-starch-based-cationic-polymer-for-oil-recovery_10074.html
January 1, 2013
A photocatalyst that reduces CO2 into carbon monoxide is being commercialized by Tokyo Chemical Industry Co. (Tokyo, Japan; www.tcichemicals.com/en/jp/index.html). Developed by Osamu Ishitani and his research group at Tokyo Institute of Technology (TiTech; Japan; www.chemistry.titech.ac.jp/~ishitani/index-jp.htm), the catalyst is a step towards artificial photosynthesis whereby CO2 can be converted into...
http://www.chemengonline.com/chementator/A-step-towards-artificial-photosynthesis_10076.html
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