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Archives :: Processing & Handling :: Reaction Engineering

Displaying 121 - 140 of 319 stories.
October 15, 2008
Chementator: Feed sugar to these bacteria and they’ll produce hydrogen
Azotobacter are nitrogen-fixing bacteria that do a useful job in soil by converting N 2 to ammonia. As a side reaction they also produce hydrogen, most of which they oxidize for their own energy consumption. In a project of the U.S. Dept. of Agriculture’s Soybean and Nitrogen Fixation Unit (USDA; www.ars.usda.gov) and North Carolina State University (Raleigh, N.C.), scientists have...
http://www.che.com/processing_and_handling/reaction_engineering/biochemistry/Chementator-Feed-sugar-to-these-bacteria-and-theyll-produce-hydrogen_4252.html
September 15, 2008
Chementator: Microreactors
Ehrfeld Mikrotechnik BTS GmbH (EMB), a subsidiary of Bayer Technology Services GmbH (BTS; Leverkusen, Germany; www.bayertechnology.com), has signed a production-and-marketing agreement with Xytel Inc. (Spartanburg, S.C.; www.xytelcorp.com) to introduce microreactor...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-Microreactors_4196.html
September 15, 2008
Chementator: A new F-T catalyst
A new metal carbide F-T catalyst has been developed by Oxford Catalysts Limited (Oxford, U.K., www.oxfordcatalysts.com) for making second-generation biofuel in small-scale microchannel reactors. The catalyst was produced...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-A-new-F-T-catalyst_4193.html
July 15, 2008
Chementator: Add a second riser to boost propylene production from FCC residue
Axens (Rueil-Malmaison, France; edlinks.che.com/7374-534) has commercialized its new Resid Fluid Catalytic Cracking (RFCC) PetroRiser technology for the production of high yields of propylene. This new resid-to-propylene technology is part of the FCC Alliance between Axens, The Shaw Group, Inc. (Baton Rouge, La.), Total S.A. (Paris) and IFP...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-Add-a-second-riser-to-boost-propylene-production-from-FCC-residue_4028.html
July 15, 2008
Chementator: A clean, sustainable process for making surfactants
Alkylglyceryl ethers (AGEs) are biodegradable nonionic surfactants with excellent foaming and moisturizing properties. Up to now, AGEs have been made in batch reactors whereby the corresponding alkyl glycidyl ether (GE) is hydrolyzed in a solvent (alcohol or ethyleneglycol monoalkyl ether) with a homogeneous acid or base as a catalyst. Such conventional routes leave catalyst residue and solvent in the product...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-A-clean-sustainable-process-for-making-surfactants_4029.html
July 15, 2008
Chementator: Making esters with microwaves
A simple, fast and clean process to make esters without a catalyst is being developed by Chemicrea Inc. (Tokyo; edlinks.che.com/7374-539) with the support of New Energy & Industrial Technology Development Organization (Kawasaki), and Gifu University (Gifu, all Japan). The process uses microwaves to continuously drive off the water byproduct, thereby shifting the reaction equilibrium to the right...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-Making-esters-with-microwaves_4033.html
July 15, 2008
Chementator: A cost-effective deprotection catalyst
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.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-A-cost-effective-deprotection-catalyst_4035.html
July 15, 2008
Chementator: New enzymes
BASF SE (Ludwigshafen, Germany; edlinks.che.com/7374-542) has developed a new class of enzymes, called enoate reductases, which can be...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-New-enzymes_4037.html
June 15, 2008
Chementator:  A dynamic way to reduce NOx emissions from FCCs
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.che.com/processing_and_handling/reaction_engineering/Chementator-A-dynamic-way-to-reduce-NOx-emissions-from-FCCs_3955.html
June 15, 2008
Chementator: Propylene or diesel fuel? Just change the controls
Petroleum refiners can have the option to produce more diesel fuel or propylene from their fluid catalytic crackers, depending on the demand, through a new process offered by Shell Global Solutions (edlinks.che.com/7373-541). The process enables a typical FCC (processing a large percentage of residual feed) to produce up to 19.3 wt.% light cycle oil (LCO, for diesel fuel) with 10 wt.% propylene, or about...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-Propylene-or-diesel-fuel-Just-change-the-controls_3964.html
June 15, 2008
Chementator: A commercial breakthrough in alcohol oxidation
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.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-A-commercial-breakthrough-in-alcohol-oxidation_3961.html
June 15, 2008
Chementator: Plastics from CO2?
Researchers from the Organic Chemistry Dept. at Newcastle University (U.K.; edlinks.che.com/7373-544) have developed aluminium (salen) complexes that exhibit "exceptional" activity for catalyzing the synthesis of cyclic...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-Plastics-from-CO2_3967.html
June 15, 2008
Chementator: Catalyst loading
TubeMaster, Inc. (Louisville, Ky.; edlinks.che.com/7373-547) has filed U.S. and foreign patents for Dog-leg — claimed to be the world’s first articulating catalyst-loading...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-Catalyst-loading_3970.html
June 15, 2008
Making vegetable plants to produce useful fatty scids
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.che.com/processing_and_handling/reaction_engineering/biochemistry/Making-vegetable-plants-to-produce-useful-fatty-scids_3959.html
June 15, 2008
Chementator: Soy polymers may have a future in drug delivery
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.che.com/processing_and_handling/reaction_engineering/biochemistry/Chementator-Soy-polymers-may-have-a-future-in-drug-delivery_3962.html
May 15, 2008
Chementator: This Catalyst Helps Visible Light Split Water into H2 and O2
Normally, only the ultraviolet (higher energy) component of the solar spectrum is usable for the photo-catalytic electrolysis of water into hydrogen and oxygen, which takes place in photochemical cells with an anode made of single-crystalline, rutile-type titanium oxide and a platinum electrode. Now, water can be photolyzed into H2 and O2...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-This-Catalyst-Helps-Visible-Light-Split-Water-into-H2-and-O2_3876.html
May 15, 2008
Chementator: Improving the Performance of HDS Catalysts
Researchers at Oxford Catalysts Ltd. (Oxford, U.K.; edlinks.che.com/7372-534) have shown that the method of preparation — rather than the identity or combination of metals used — has the greatest influence on the performance of hydrodesulfurization (HDS) catalysts. The results of laboratory trials, presented at the annual ACS meeting last month (New Orleans, La.; April...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-Improving-the-Performance-of-HDS-Catalysts_3877.html
May 15, 2008
Chementator: Hot Potatoes
CLC bio (Aarhus, Denmark; edlinks.che.com/7372-550) and partners from Danish research institutions and crop-enhancing firms have started a project to develop potatoes into a...
http://www.che.com/processing_and_handling/reaction_engineering/biochemistry/Chementator-Hot-Potatoes_3887.html
May 15, 2008
Chementator: A New Concept in the Supply of Cl2
Small-scale chemical producers that use chlorine often rely on larger producers, which sell them the excess Cl2 produced by dedicated chlor-alkali plants. However, such Cl2 supplies are being threatened on a number of fronts, at least in Europe, where new legislation forbidding the import or export of mercury (after 2010) could force older Hg-based chlor-alkali plants to convert to membrane technology or...
http://www.che.com/processing_and_handling/reaction_engineering/electrochemistry/Chementator-A-New-Concept-in-the-Supply-of-Cl2_3881.html
April 24, 2008
Uhdenora receives order from  AO KAUSTIK
Uhdenora S.p.A. (Milan, Italy; www.uhdenora.com) received a contract from AO KAUSTIK for  the new membrane chlor-alkali plant to be erected in Pavlodar, Kazakhstan. The new plant will have a capacity of 91 m.t./d of sodium hydroxide, and is scheduled to come on stream  in...
http://www.che.com/processing_and_handling/reaction_engineering/electrochemistry/Uhdenora-receives-order-from-AO-KAUSTIK_3829.html
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