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Archives :: Processing & Handling :: Engineering Materials

Displaying 81 - 100 of 142 stories.
April 15, 2008
Chementator: Novel solar electrode
Unidym, Inc., (Menlo Park, Calif.; edlinks.che.com/7371-549) has entered into a joint development agreement with Nippon Kayaku (Tokyo, Japan; edlinks.che.com/7371-550), to...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Novel-solar-electrode_3821.html
April 14, 2008
A Condenser Made of Tantalum CL-Clad Dedicated to the Pharmaceutical and Fine Chemical Industries
Batch reactor systems are used extensively in the pharmaceutical and fine chemical industries for the manufacture of small-volume, high-value products, in either dedicated or multipurpose production facilities. Stable and reproducible operating conditions are of great importance in order to achieve the batch times, optimum yields and product purity required to satisfy commercial requirements and the...
http://www.che.com/processing_and_handling/engineering_materials/A-Condenser-Made-of-Tantalum-CL-Clad-Dedicated-to-the-Pharmaceutical-and-Fine-Chemical-Industries_3778.html
March 15, 2008
Newsfront: Forum Makes a Big Deal about Nanotech
On January 31, 2008, law firm Chadbourne & Parke LLP held its "Nanotechnology, Law & Commerce" forum exploring "Business at One-Billionth of a Meter." A total of 18 invited speakers explored a variety of topics including the current state of nanotech R&D; public policy, politics and legal issues; the financing and underwriting of nanotech; and "nanoethics." George...
http://www.che.com/processing_and_handling/engineering_materials/Newsfront-Forum-Makes-a-Big-Deal-about-Nanotech_3718.html
March 15, 2008
Chementator: A commercial debut for a process to make mesoporous silica
Next month, Taiyo Kagaku Co. (Yokkaichi, Japan; edlinks.che.com/7370-563) will start up a 20-m.t./yr plant — said to be the world’s first — for the production of mesoporous silica. Taiyo Kagaku developed the new production process based on technology first introduced by Toyota Central R&D Laboratories, Inc. (Aichi, Japan; CE, April 2004, p. 17). The commercial grade mesoporous silica...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-commercial-debut-for-a-process-to-make-mesoporous-silica_3736.html
March 15, 2008
Chementator: A new Mg2Si-production process promises to advance thermoelectric devices
The Seebeck effect — the direct conversion of a temperature difference to electricity — is responsible for the operation of thermocouples. But taking advantage of this phenomenon to make electricity from waste heat in so-called thermoelectric (TE) devices has been hindered by the high cost or toxicity of common TE materials, such as lead-tellurium or cobalt-antimony. And up to now, production...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-A-new-Mg2Si-production-process-promises-to-advance-thermoelectric-devices_3737.html
March 15, 2008
Chementator: Phthalate-free glue
Henkel KGaA (Düsseldorf, Germany; edlinks.che.com/7370-581) has developed a new generation of plasticizer-free dispersion adhesives called Adhesin A 78 — a copolymer system whose formulation...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Phthalate-free-glue_3749.html
February 15, 2008
February Letters
Another corrosion-resistant material deserves a mention In the December 2007 article, The Heat Is On (pp. 24–28) I take issue with the statement next to the Pfaudler photo, “Tantalum and glass-lined steel are the two most corrosion resistant materials used in the chemical and pharmaceutical industries.” They are two of the most corrosion resistant materials, but our Hexoloy Sintered Alpha...
http://www.che.com/processing_and_handling/engineering_materials/February-Letters_3676.html
February 15, 2008
Chementator: One less step to make activated carbon with dispersed metal nanoparticles
Nanostructured microporous carbons containing well-dispersed metal nanoparticles have the potential to improve the performance of fuel cells or catalysis. However, traditional techniques for embedding metal particles in porous carbons (post-synthesis treatment either by impregnation, adsorption, or ion exchange) can lead to uncontrolled growth of metal particle size, shape and aggregation, which can cause...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-One-less-step-to-make-activated-carbon-with-dispersed-metal-nanoparticles_3685.html
February 15, 2008
Chementator: Super-oleophobic materials promise revolutionary membranes
A team of researchers from MIT’s (Cambridge, Mass.; edlinks.che.com/7369-540) chemical and mechanical engineering departments, in association with the U.S. Air Force Research Laboratory (Edwards Air Force Base, Calif.), has developed oil-repellent surfaces with likely separations and safety applications for the chemical process industries. Due to the high-surface-tension of water (γlv = 72.1...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Super-oleophobic-materials-promise-revolutionary-membranes_3689.html
February 15, 2008
Photons to electrons, & vice versa
Technical innovations in light emitting diodes (LEDs) and photovoltaics have consistently reflected the similarities between the two technologies. In fact, research groups at many universities, such as  the University of Michigan (Ann Arbor, Mich.; www.umich.edu) and the University of Southern California (USC; Los Angeles, Calif.; www.usc.edu), are studying both simultaneously. With pressing consumer...
http://www.che.com/processing_and_handling/engineering_materials/Photons-to-electrons-and-vice-versa_3697.html
January 15, 2008
Controlling SO2 Without Corroding the Bottom Line
Among the many types of pollution-abatement systems that are in use today, wet fluegas desulfurization (FGD) systems — also known as wet scrubbers — are notoriously capital- and maintenance-intensive. These systems are widely used by electric power plants and chemical process facilities to capture and neutralize sulfur-laden fluegas, and help plant operators to meet strict federal and state...
http://www.che.com/processing_and_handling/engineering_materials/Controlling-SO2-Without-Corroding-the-Bottom-Line_3605.html
January 15, 2008
Engineering Practice: Corrosion Resistance Using Rock and Glue
Low-cost, corrosion-resistant castings are being produced using epoxy and mineral aggregates Stainless steel, painted and plated cast-iron and steel structures are being replaced at a fraction of the cost with high-precision polymer castings (PPCs). PPCs can usually be cast to tolerance, thus eliminating machining. Because they are produced from an epoxy-resin material, painting, plating and anodizing are...
http://www.che.com/processing_and_handling/engineering_materials/Engineering-Practice-Corrosion-Resistance-Using-Rock-and-Glue_3607.html
January 15, 2008
Chementator: Using Living Plants to Synthesize Metallic Nanoparticles
Metallic nanoparticles are usually produced by wet chemical methods, often using toxic and flammable substances, or by physical methods such as evaporation and laser ablation. A group from the Laboratory for Sustainable Technology, School of Chemical and Biomolecular Engineering, at the University of Sydney (Australia; edlinks.che.com/7368-534), has been experimenting with the synthesis of nanoparticles of...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-Using-Living-Plants-to-Synthesize-Metallic-Nanoparticles_3615.html
December 15, 2007
Chementator: New Pyrolysis Method Improves Carbon Black Recovery from Scrap Tires
The standard temperature range for waste-rubber pyrolysis has been reported as 480 – 1,740ºF. Within 480 – 750ºF, shredded tire scrap decomposes into increasing amounts of gases and oil; and above 750ºF, oil and solid char yields can decrease relative to gas production. At these higher temperatures both the gases and oil produced are high in carcinogenic polycyclic aromatic...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-New-Pyrolysis-Method-Improves-Carbon-Black-Recovery-from-Scrap-Tires_3577.html
December 15, 2007
Chementator: This Membrane Mimics Mother Nature to Separate CO2
A plastic membrane that allows CO2 and other small molecules to move through its pores while largely preventing the movement of larger molecules like CH4, has been developed by a team of researchers from CSIRO Materials Science and Engineering and the Water for a Healthy Country Flagship (Melbourne, Australia; edlinks.che.com/6902-537); the Center for Energy and Environmental Resources, the Department of...
http://www.che.com/processing_and_handling/engineering_materials/Chementator-This-Membrane-Mimics-Mother-Nature-to-Separate-CO2_3579.html
November 29, 2007
SGL Group strengthens carbon-fiber activities in the U.S.
Yesterday, SGL Group (www.sglcarbon.com) — The Carbon Company — signed definitive agreements to acquire Aldila Inc.’s interest in Carbon Fiber Technology LLC (CFT; Evanston, Wyoming), a joint venture (JV) between SGL and Aldila. Since 1999, SGL Group and Aldila — the world’s leading producer of composite golf shafts — each held a 50% in the JV. The purchase price was...
http://www.che.com/processing_and_handling/engineering_materials/SGL-Group-strengthens-carbon-fiber-activities-in-the-U-S-_3526.html
November 15, 2007
Plasma gasification process will recycle chlorine wastes and produce syngas
A plasma-based waste-treatment process will be installed in Dow Corning Corp.’s silicon-products-manufacturing plant in Midland, Mich., where it will recycle chemical wastes, help lower the site’s consumption of natural gas by 400-billion Btu/yr and help reduce the plant’s total emissions by 75%. The installation will mark the first use of the technology in a chemical process plant, says...
http://www.che.com/processing_and_handling/engineering_materials/Plasma-gasification-process-will-recycle-chlorine-wastes-and-produce-syngas_3505.html
November 15, 2007
Li-ion batteries
Evonik Industries AG (Essen, Germany; edlinks.che.com/6901-543) is acquiring a 20% stake in Li-Tec Vermögensverwaltungs GmbH & Co. KG (Kamenz, Germany). With its participation in Li-Tec, Evonik...
http://www.che.com/processing_and_handling/engineering_materials/Li-ion-batteries_3507.html
November 15, 2007
Solar cells
A program to develop ionic liquids and formulations to improve the performance and efficiency of solar cells has been initiated by BASF AG (Ludwigshafen, Germany) and G24 Innovations, Ltd...
http://www.che.com/processing_and_handling/engineering_materials/Solar-cells_3514.html
October 1, 2007
Piping for Process Plants, Part 4: Codes and Fabrication
Click here for full pdf version of this article - includes all graphs, charts, tables, and author information   This fourth in a series of articles* on piping for process plants examines two topics that may, at first, seem to fall outside the scope of chemical engineering — piping codes and the pipe fabrication. Obviously chemical engineers will not be welding pipes together, but understanding the...
http://www.che.com/processing_and_handling/engineering_materials/Piping-for-Process-Plants-Part-4-Codes-and-Fabrication_3391.html
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