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Displaying 521 - 540 of 804 stories.
May 1, 2007
An integrated energy scheme that combines the generation of substitute natural gas (SNG) from coal, coproduction of biofuel and electricity and near-zero emissions of carbon dioxide, is being developed by Arizona Public Service (APS, Phoenix; edlinks.che.com/6895-532), Arizona’s largest utility, with the support of the U.S. Dept. of Energy’s National Energy Technology Laboratory (NETL...
http://www.che.com/news/Hydrogasification-project-aims-to-produce-clean-energy-from-coal-wind-and-biomass_3250.html
May 1, 2007
“Green” diesel fuel that can be blended with petroleum-derived diesel fuel has been produced from vegetable oil in a process developed jointly by UOP LLC (Des Plaines, Ill.; edlinks.che.com/6895-533) and Eni S.p.A. (Milan, Italy). The fuel is a “premium diesel blending component” for a refinery, with a boiling range comparable to typical diesel products and a cetane number of 80...
http://www.che.com/news/A-green-process-for-petroleum-refineries_3251.html
May 1, 2007
Biodiesel fuel is typically produced by the transesterification of vegetable oil or animal fats in a batch operation that takes about 1-1/2 h. Hydro Dynamics, Inc. (HDI; Rome, Ga.; edlinks.che.com/6895-534) claims to have cut the residence time to 2–3 s in a continuous process that uses the company’s patented...
http://www.che.com/news/Shock-waves-step-up-biodiesel-fuel-production_3252.html
May 1, 2007
A new catalyst for selectively oxidizing hydrogen into hydrogen peroxide has been developed by professor Tatsumi Ishihara at the Post-Graduate School of Engineering, Kyushu University (Fukuoka City, Japan; edlinks.che.com/6895-535). This one-step synthesis of H2O2 is expected to be more...
http://www.che.com/news/A-one-step-process-for-making-H2O2_3253.html
May 1, 2007
A coal-gasification reactor that resembles a metals smelter and operates in two cycles (oxidation and reduction), alternately producing hydrogen and syngas, is being developed by Diversified Energy Corp. (Gilbert, Ariz.; edlinks.che.com/6895-536) and Alchemix Corp. (Carefree, Ariz.). In the oxidation cycle (diagram, left), steam is injected into a bath of molten iron-tin alloy to form iron oxide and...
http://www.che.com/news/This-coal-gasification-process-produces-H2-and-CO-rich-syngas-in-separate-streams_3254.html
May 1, 2007
A simpler and more-efficient way to obtain purified terephthalic acid (PTA) has been developed by GTC Technology (Houston, Tex.; edlinks.che.com/6895-537). In conventional PTA production, p-xylene is oxidized to crude terephthalic acid (CTA), then purified by hydrogenation in an aqueous solution. Hydrogenation converts the main impurity, 4-carboxybenzaldehyde (4-CBA), to p-toluic acid, which is more readily...
http://www.che.com/news/A-better-way-to-purify-terephthalic-acid_3255.html
May 1, 2007
Following up on its success with the world’s first commercial plant to use a new oil-recycling process, Puralube GmbH (Elsteraue, Germany; edlinks.che.com/6895-538) plans to build a second plant near the first one, in Zeitz/Elsteraue. Scheduled for startup at the end of 2008, it will have the same capacity as the first, at approximately 80,000 m.t./yr of used oil. Christian Hartmann...
http://www.che.com/news/A-second-plant-for-an-oil-recycling-process_3256.html
May 1, 2007
In order to produce ethanol with nearly 100% purity from fermentation broth, conventional processes use a two-step distillation operation, which accounts for almost 55% of the total energy requirements. Therefore, improving the concentration step is a key to reducing the costs of making bioethanol. A promising step in this direction is a new gating membrane being developed by professor Shin-ichi Nakao at...
http://www.che.com/news/The-cost-for-concentrating-ethanol-may-drop-thanks-to-a-membrane-that-acts-like-a-valve_3257.html
May 1, 2007
Dow Epoxy, a business unit of Dow Chemical Co. (Midland Mich.; edlinks.che.com/6895-541) has selected Shanghai Chemical Industry Park as the site for its 150,000-m.t./yr glycerine-to-epichlorohydrin (GTE) plant and a 100,000-m.t./yr liquid-epoxy-resins plant. Both plants are expected to...
http://www.che.com/news/Epichlorohydrin_3258.html
May 1, 2007
Last month, Air Liquide S.A. (Paris; edlinks.che.com/6895-543) acquired Lurgi AG (Frankfurt, Germany) from the GEA Group AG (Bochum, Germany; edlinks.che.com/6895-544). Although subject to...
http://www.che.com/news/E-and-C-changes_3259.html
May 1, 2007
If every vehicle in the U.S. ran on fuel made primarily from ethanol instead of gasoline, the number of respiratory-related deaths and hospitalizations would likely increase, according to a study by Mark Jacobson, associate professor of civil and environmental...
http://www.che.com/news/Is-ethanol-the-answer_3260.html
May 1, 2007
A paper-thin battery, with an electrode made from a redox-active organic polymer film (200 nm thick), has been designed by researchers at Waseda University (Tokyo; edlinks.che.com/6895-547). The polymer has nitroxide-radical groups that act as charge carriers. According to professor Hiroyuki Nishide, this “organic radical" battery presents several advantages over alternative, organic-based...
http://www.che.com/news/Flexible-battery_3261.html
May 1, 2007
BASF AG (Ludwigshafen, Germany; edlinks.che.com/6895-548) and voestalpine Stahl GmbH (Linz, Austria; edlinks.che.com/6895-549) have developed a steel...
http://www.che.com/news/HM-free-passivation_3262.html
May 1, 2007
    Improved profitability in the refining industry has brought a wave of investment aimed at raising capacity, boosting product quality and operating flexibility, and increasing refiners’ ability to deal with difficult feedstocks. Greater integration with petrochemical complexes and, in the future, biofuels, also characterize the modern refining industry, experts say. Though margins have...
http://www.che.com/news/Good-Times-for-Refiners_3324.html
May 1, 2007
            Many coal-fired power plants make gypsum and construction materials. But they should also consider manufacturing hydrochloric acid and ethanol. Furthermore, they should consider substituting biomass and waste organics for up to 10% of the coal. The combination of these initiatives would make coal plants much “greener.” Coal is the cost effective way to...
http://www.che.com/news/Coal-fired-power-plants-should-become-chemical-manufacturers_3325.html
May 1, 2007
Metabolix, Inc. (Cambridge, Mass.; edlinks.che.com/6895-550) and ADM Co. (Decatur. Ill.; edlinks.che.com/6895-551) will jointly produce Mirel Natural Plastics — a...
http://www.che.com/news/Biodegradable-plastic_3399.html
April 1, 2007
Dow Chemical Co. (Midland, Mich.; edlinks.che.com/6894-531) will begin commercial-scale production of Infuse olefin-block copolymers (OBCs), using its Insite technology, in the third quarter of 2007. The company recently completed a trial manufacturing run of OBCs at the plant, which is located in Freeport, Tex. Infuse OBCs constitute a new family of olefin elastomers that deliver improved properties over...
http://www.che.com/news/Dow-will-commercialize-its-Olefin-Block-Copolymers-technology_3230.html
April 1, 2007
Membranes that consist of a single layer of carbon atoms (called graphene) - the thinnest possible structure - have been created by researchers at Max Planck Institute for Solid State Research (Stuttgart, Germany; edlinks.che.com/6894-532) and at the University of Manchester (England...
http://www.che.com/news/The-worlds-thinnest-carbon-membranes_3231.html
April 1, 2007
Another kind of carbon membrane (see previous item) is being developed at Lawrence Livermore National Laboratory (Livermore, Calif.; edlinks.che.com/6894-534). In this case, the membrane consists of a parallel array of tiny tubes, each of less than 2 nm dia. and several...
http://www.che.com/news/Carbon-nanotube-membranes_3232.html
April 1, 2007
A demonstration plant that will produce 5,000 m.t./yr of succinic acid from biomass will be built in Pomacle, France, by BioAmber, a joint venture of Diversified Natural Products (DNP, New York, N.Y.; edlinks.che.com/6894-535) and Agro Industries Recherche et Developpement (ARD, Pomacle). Succinic acid, used in a variety of products, including cosmetics and foods, is produced mainly from maleic anhydride...
http://www.che.com/news/A-sustainable-route-to-succinic-acid_3233.html
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