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Displaying 281 - 300 of 814 stories.
July 15, 2008
A method for manufacturing porous-wall, hollow-glass microspheres (PWHGMs) over an adjustable range of pore sizes promises to substitute the doped-ceramic packing material employed in various processes, by delivering improved kinetics and a denser, more uniform arrangement of active materials. The research — conducted by the Savannah River National Laboratory (SRNL; Aiken, S.C....
http://www.chemengonline.com/news/Chementator-Porous-glass-microspheres-with-promising-potential_4034.html
July 15, 2008
The use of palladium on carbon powder supports (Pd-CP) has traditionally been a commercially viable means of catalyzing deprotection reactions, despite also requiring substantive quantities of precious metal and limiting the selection of solvents due to low hydrogenation activity. However, with a new series of Pd-CP catalysts, BASF’s catalyst division (Iselin, N.J.; edlinks.che.com/7374-541) has...
http://www.chemengonline.com/news/Chementator-A-cost-effective-deprotection-catalyst_4035.html
July 15, 2008
BASF SE (Ludwigshafen, Germany; edlinks.che.com/7374-542) has developed a new class of enzymes, called enoate reductases, which can be...
http://www.chemengonline.com/news/Chementator-New-enzymes_4037.html
July 15, 2008
Chemists at Stanford University (Calif.; edlinks.che.com/7374-543) have constructed a field-effect transistor (FET) with graphene that can operate at room temperature. Previous graphene FET...
http://www.chemengonline.com/news/Chementator-Room-temperature-FET_4038.html
July 15, 2008
Researchers at TU Delft (edlinks.che.com/7374-544) and the FOM Foundation for Fundamental Research on Matter (Utrecht, both Netherlands) have demonstrated the so-called avalanch effect, where...
http://www.chemengonline.com/news/Chementator-Avalanche-effect_4039.html
July 15, 2008
Industrial designer Tore Christian Bjørsvik at Sintef Health Research (Trondheim, Norway; edlinks.che.com/7374-545) has developed a safety helmet with a soft, flexible inner layer that...
http://www.chemengonline.com/news/Chementator-A-smart-helmet_4040.html
July 15, 2008
The Dow Performance Fluids, a business of Dow Chemical Co. (Midland, Mich.; edlinks.che.com/7374-546) has introduced a new high-temperature cleaning solvent for cleaning polymer-process reactor vessels...
http://www.chemengonline.com/news/Chementator-A-new-solvent_4041.html
July 15, 2008
Last month, a Dutch consortium composed of Akzo Nobel (Amsterdam, Netherlands; edlinks.che.com/7473-549), energy firm Essent, algae producers Ingrepo and Wageningen University, received a...
http://www.chemengonline.com/news/Chementator-Algae-to-chemicals_4042.html
July 15, 2008
Scientists at Rice University (Houston, Tex.; edlinks.che.com/7374-547) have shown how baton-shaped nanoparticles of metal and carbon can trap oil droplets in water by spontaneously assembling into tiny sacs. The particles — composed of hollow carbon nanotubes (hydrophobic) with a short segment of gold (hydrophyllic) attached to...
http://www.chemengonline.com/news/Chementator-Nanobatons-trap-oil-as-does-nanopaper_4043.html
June 15, 2008
At 2,064 ft as of this past April, the unfinished Burj Dubai skyscraper in the United Arab Emirates is the tallest man-made structure on earth. "A structure of this kind is only possible if the right [concrete] mixture is guaranteed," as BASF’s executive director for research Stefan Marcinowski has pointed out. In fact, "a chemist with an analytical laboratory is constantly monitoring...
http://www.chemengonline.com/news/Newsfront-Chemistry-for-Construction-A-A_3938.html
June 15, 2008
The chemical process industries (CPI) are subjected to countless environmental, health and safety (EH&S) regulations affecting the production, distribution and general use of chemical products. To add to the existing burden, new global initiatives related to product stewardship — most notably REACH and GHS (see box, Regulations 101, below) — are joining the regulatory fray. "REACH and...
http://www.chemengonline.com/news/Newsfront-Reaching-for-a-Solution_3939.html
June 15, 2008
A system for controlling oxides-of-nitrogen (NOx) emissions from catalyst regenerators in fluid catalytic crackers (FCCs) has cut NOx output to below 40 ppm (and as low as 25 ppm under certain conditions) in its first commercial installation, according to its developer, Shell Global Solutions (Houston, Tex.; edlinks.che.com/7373-531). This compares with about 20 ppm for selective catalytic reduction (SCR)...
http://www.chemengonline.com/news/Chementator-A-dynamic-way-to-reduce-NOx-emissions-from-FCCs_3955.html
June 15, 2008
This summer, Asahi Kasei Chemicals Corp. (AKCC; Tokyo, Japan; edlinks.che.com/7373-532) plans to begin construction on a plant for producing 200,000 m.t./yr of acrylonitrile (AN) and a plant for making 70,000 m.t./yr of methyl methacrylate (MMA), at Map Ta Phut, Rayong, Thailand. The $80-million investment...
http://www.chemengonline.com/news/Chementator-A-propane-based-AN-process-makes-its-commercial-debut_3956.html
June 15, 2008
Dupont (Wilmington, Del.; edlinks.che.com/7373-533) and its partner Genencor (Palo Alto, Calif.; edlinks.che.com/7373-534), a div. of Danisco A/S, plan to invest $140 million to integrate the pretreatment process and fermenting organism — developed with the National Renewable Energy Laboratory (NREL...
http://www.chemengonline.com/news/Chementator-Cellulosic-ethanol_3957.html
June 15, 2008
After several years of proven operation in the food- and nutritional-products industry, a patented drying technology is now ready to be applied for any liquid or slurry product. Developed by MCD Technologies, Inc. (Tacoma, Wash.; edlinks.che.com/7373-535), the Refractance Window (RW) system is said to cost about one third as much as freeze drying equipment, and consumes about one third to half the energy...
http://www.chemengonline.com/news/Chementator-Drying-at-the-speed-of-light_3958.html
June 15, 2008
Scientists from CSIRO (Melbourne, Australia; edlinks.che.com/7373-536) have succeeded in engineering the model plant Arabidopsis to produce 30 wt.% of vernolic acid, an unusual fatty acid (UFA), in its seed oil. The project’s leader, Allan Green — who presented the findings at the Fifth Annual World Congress on Industrial Biotechnology & Bioprocessing (Chicago, April 27 – 30) —...
http://www.chemengonline.com/news/Making-vegetable-plants-to-produce-useful-fatty-scids_3959.html
June 15, 2008
ExxonMobil Corp. (Irving, Tex.; edlinks.che.com/7373-537) plans to spend more than $100 million on a commercial demonstration of its Controlled Freeze Zone (CFZ) technology for removing carbon dioxide from natural gas. The plant, to be located at the company’s Shute Creek Treating Facility near LaBarge, Wyo., will...
http://www.chemengonline.com/news/Chementator-Scaleup-is-set-for-a-natural-gas-treating-process-that-freezes-out-CO2_3960.html
June 15, 2008
Nissan Chemical Industries Ltd. (Tokyo, Japan; edlinks.che.com/7373-538) is commercializing "ultrahighly active" catalysts, based on the catalyst technology developed by professor Yoshiharu Iwabuchi of the Graduate School of Pharmaceutical Sciences, Tohoku University (Sendai, Japan), which catalyzes the oxidation of alcohols into carbonyl compounds. Conventional catalysts, such as...
http://www.chemengonline.com/news/Chementator-A-commercial-breakthrough-in-alcohol-oxidation_3961.html
June 15, 2008
Soy-oil-based hydrogels developed by the U.S. Agricultural Research Service (ARS) show promise as biodegradable encapsulants for drug delivery. Scientists at ARS’ National Center for Agricultural Utilization Research (Peoria, Ill.; edlinks.che.com/7373-539) have collaborated with researchers at the University of Toronto to encapsulate the breast-cancer drug doxorubicin in hydrogel nanoparticles. In...
http://www.chemengonline.com/news/Chementator-Soy-polymers-may-have-a-future-in-drug-delivery_3962.html
June 15, 2008
Infrared (IR) analyzers are widely used for gas, liquid and surface analysis. Up to now, the most common and inexpensive IR sensor has been a combination of filters (non-dispersive IR) — which have a restricted wavelength band — with a pyroelectric detector; alternatives, such as Fourier transform (FTIR) spectrometers, require an elaborate optical configuration and tend to be expensive. Now, an...
http://www.chemengonline.com/news/Chementator-MIR-spectrometer-on-a-chip_3963.html
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