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Archives :: Processing & Handling :: Reaction Engineering

Displaying 101 - 120 of 319 stories.
March 1, 2009
Feature Report: Industrial Gas Applications
Technical and specialty gases find use in many synthesis processes and a number of unit operations, in analysis and in plant maintenance. This article outlines applications for gases in fine and specialty chemistry, ranging from synthesis processes and inerting to off-gas treatment and industrial services. For each one, processes and the field of use are briefly explained, and existing technical solutions...
http://www.che.com/processing_and_handling/reaction_engineering/Feature-Report-Industrial-Gas-Applications_4584.html
March 1, 2009
Chementator: Multiscale reactors come of age for making fine chemicals
In the framework of the Impulse project (Integrated Multiscale Process Units with Locally Structured Elements; CE, April 2005, p. 19), researchers from the Industrial Chemistry Group at RWTH Aachen University (Germany; www.itmc.rwth-aachen.de) have developed a continuous production plant capable of producing 20 kg/d of an ionic liquid (IL). Normally, this IL is manufactured by a semi-batch process via the...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-Multiscale-reactors-come-of-age-for-making-fine-chemicals_4594.html
March 1, 2009
Chementator: A process to make butadiene from under-utilized cracker C4 fractions
Mitsubishi Chemical Corp. (MCC; Tokyo, Japan; www.m-kagaku.co.jp) has developed a new technology for producing 1,3-butadiene (butadiene) from waste butenes using a self-developed, proprietary catalyst. The process has been pilot tested (200-ton/yr capacity) at MCC’s Mizushima site in Japan, and the firm plans to complete process design this year with the aim to commercialize the technology by 2010...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-A-process-to-make-butadiene-from-under-utilized-cracker-C4-fractions_4595.html
March 1, 2009
Chementator: Photocatalysts for decomposing VOCs
A photocatalyst that is more active for decomposing volatile organic compounds (VOCs) with visible light than existing catalysts has been developed by researchers from the New Energy and Industrial Technology Development Organization (NEDO; Kawasaki City, Japan) in a project lead by professor Kazuhito Hashimoto at the University of Tokyo. The catalyst — a copper ion supported tungsten oxide —...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-Photocatalysts-for-decomposing-VOCs_4599.html
February 12, 2009
Handle difficult liquids on a small scale with this flow reactor
The Coflore ACR is a new type of flow reactor for use in laboratories and pilot plants. The use of multiple reaction cells and dynamic mixing gives the reactor much greater flexibility and ability to handle...
http://www.che.com/processing_and_handling/reaction_engineering/Handle-difficult-liquids-on-a-small-scale-with-this-flow-reactor_4531.html
February 1, 2009
This centrifugal reactor/separator speeds up biodiesel production
A continuous process for producing biodiesel that has a residence time of about one minute, versus several hours for a conventional batch process, has been developed at Oak Ridge National Laboratory (ORNL; Oak Ridge, Tenn.; www.ornl.gov). The process uses a centrifuge for simultaneous synthesis of biodiesel and separation of the biodiesel from the glycerol byproduct. ORNL has done laboratory tests and is...
http://www.che.com/processing_and_handling/reaction_engineering/This-centrifugal-reactorseparator-speeds-up-biodiesel-production_4517.html
February 1, 2009
Chementator: A new syngas catalyst passes pilot tests...
Mitsunori Shimura and colleagues at the R&D Center of Chiyoda Corp. (Yokohama, Japan; www.chiyoda.co.jp) have developed a new catalyst for producing a synthesis gas (syngas; hydrogen and carbon monoxide) from steam reforming of methane. The catalyst consists of precious metals selectively loaded on the surface of the firm’s commercial, egg-shell-shaped support, which results in an effective...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-A-new-syngas-catalyst-passes-pilot-tests-_4518.html
February 1, 2009
Chementator: Commercialization nears for producing cartenoids from engineered yeasts
In late 2009, Microbia PE, Inc. (Lexington, Mass.; www.microbia-pe.com) will begin commercialization of its initial carotenoid products. Microbia plans to produce β-carotene, astaxanthin, zeaxanthin, cathaxanthin and lutein — all five carotenoid products that currently have significant commercial value. These carotenoids have primary applications as food ingredients, dietary supplements and...
http://www.che.com/processing_and_handling/reaction_engineering/biochemistry/Chementator-Commercialization-nears-for-producing-cartenoids-from-engineered-yeasts_4523.html
January 22, 2009
Dow/Süd-Chemie seek alternative routes to chemicals
The Dow Chemical Co. (Midland, Mich; www.dow.com) and Süd-Chemie AG (Munich, Germany; www.sud-chemie.com) today announced an agreement to research alternative routes to produce chemicals to help reduce dependence on traditional sources of oil and gas. The collaborative research aims to convert synthesis gas (syngas; H2 + CO) into building-block chemicals in a more...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/DowSud-Chemie-seek-alternative-routes-to-chemicals_4481.html
January 7, 2009
Strategic collaboration between Genencor and Brain
Genencor (Palo Alto, Calif.; www.genencor.com), a division of Danisco A/S (Copenhagen, Denmark; www.danisco.com) and Brain AG (Zwingenberg, Germany; www.brain-biotech.de), have joined forces in the field of the bio-based fermentative production of industrially relevant biochemicals from renewable raw materials. Genencor will use its extensive capabilities in metabolic pathway engineering and...
http://www.che.com/processing_and_handling/reaction_engineering/biochemistry/Strategic-collaboration-between-Genencor-and-Brain_4464.html
January 1, 2009
CSTRs: Bound for Maximum Conversion
Here, a design approach for continuous stirred-tank reactors is outlined for both reversible and irreversible second-order reactions Multiple CSTRs (continuous stirred-tank reactors) are advantageous in situations where the reaction is slow; two immiscible liquids are present and require higher agitation rates; or viscous liquids are present that require high agitation rates. Unlike in plug-flow reactors...
http://www.che.com/processing_and_handling/reaction_engineering/CSTRs-Bound-for-Maximum-Conversion_4444.html
December 17, 2008
Evonik to produce catalysts in China next year
Evonik Industries AG (Essen, Germany; www.evonik.com), has started building a catalyst manufacturing plant, for producing precious-metal powder catalysts, in Shanghai, China. The plant will start operation in the fourth quarter of 2009. Precious-metal powder catalysts are used in the synthesis of pharmaceuticals, fine chemicals and industrial chemicals, where performance criteria such as high selectivity...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Evonik-to-produce-catalysts-in-China-next-year_4413.html
December 1, 2008
Chementator: Significantly slash investment costs with this oxidation reactor
Mitsubishi Chemical Corp. (Tokyo; www.m-kagaku.co.jp/index_en.htm) has developed a plate-in-frame reactor for performing oxidation reactions, such as for the partial oxidation of propane to form acrylic acid. Because of the reactor’s enhanced heat transfer to the catalyst — sandwiched between the plates — the reactor size can be as small as...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-Significantly-slash-investment-costs-with-this-oxidation-reactor_4391.html
November 4, 2008
New Haldor Topsøe subsidiary in Latin America
To further strengthen its presence and services to clients in Latin America, Haldor Topsøe (www.topsoe.com), a supplier of heterogeneous cataysis and process supplies has opened a subsidiary in Argentina...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/New-Haldor-Topsøe-subsidiary-in-Latin-America_4326.html
November 1, 2008
Chementator: A new gasifier slated for its commercial debut
Uhde GmbH (Dortmund, Germany; www.uhde.biz) has commercialized a new gasifier design, the Prenflo (pressurized entrained-flow) with Direct Quench (PDQ) process, which is an optimized design of its Prenflo PSG gasification process for applications requiring hydrogen-rich syngas generation (ammonia, methanol, H2, liquid fuels and IGCC power plants with carbon capture and storage). PDQ combines the dry feed...
http://www.che.com/processing_and_handling/reaction_engineering/Chementator-A-new-gasifier-slated-for-its-commercial-debut_4332.html
November 1, 2008
Chementator: Solid-catalyst, ionic-liquid combination shown to depolymerize cellulose
Researchers at the Max-Planck-Institut für Kohlenforschung (Mülheim, Germany; www.mpi-muelheim.mpg.de/kofo) have demonstrated that solid acids are powerful catalysts for the hydrolysis of cellulose dissolved in an ionic liquid. Even the cellulose fraction of wood, which is predominantly lignocellulose, can be hydrolyzed by the technique, says Ferdi Schüth, leader of the institute’s...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-Solid-catalyst-ionic-liquid-combination-shown-to-depolymerize-cellulose_4331.html
November 1, 2008
Chementator: A less-expensive catalyst to make EG from cellulose
Researchers at the Dalian Institute of Chemical Physics (China; www.english.dicp.ac.cn) and the University of Delaware (Newark; www.che.udel.edu) are developing a tungsten-carbide/nickel catalyst that degrades cellulose into polyols at 245°C and 60 atm. The catalyst is believed to facilitate hydrolysis and hydrogenation...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-A-less-expensive-catalyst-to-make-EG-from-cellulose_4333.html
November 1, 2008
Chementator: WO3 photo-catalyst active under visible light for VOCs decomposition
Researchers at the National Institute of Advanced Industrial Science and Technology (AIST; Tsukuba, Japan; www.aist.go.jp), and the University of Tokyo have developed new photocatalysts that are more efficient at decomposing volatile organic compounds (VOCs) than the commonly used titanium dioxide. The catalysts — tungsten trioxide promoted with palladium or copper — decompose VOCs, such as...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-WO3-photo-catalyst-active-under-visible-light-for-VOCs-decomposition_4337.html
October 15, 2008
Chementator: A new method for catalyst design
A method for identifying less-expensive catalysts, compared to commercial, precious-metal-based ones, is starting to deliver results by researchers at the Center for Atomic-scale Materials Design, Dept. of Physics, Technical University of Denmark (CAMD; Lyngby; www.camd.dtu.dk) and their collaborators. The computer-aided method ultimately generates a plot of cost-of-metal versus heat of adsorption for the...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-A-new-method-for-catalyst-design_4245.html
October 15, 2008
Chementator: This graphene-based catalyst speeds cellulose saccrification, without H2SO4 waste
In order to make ethanol from cellulose, the polysaccharide must first be broken down into sugars (saccharrified) that can be fermented. Normally, this hydrolysis reaction is catalyzed by sulfuric acid or enzymes. However, H2SO4 -based hydrolysis generates spent acid, which has to be separated and regenerated before recycling; and enzyme-driven methods have long reaction times and require pretreatment to...
http://www.che.com/processing_and_handling/reaction_engineering/catalysis/Chementator-This-graphene-based-catalyst-speeds-cellulose-saccrification-without-H2SO4-waste_4247.html
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