Latest News: Technologies
Chementator: A promising nanosieve for dehydrating solvents and biofuels
Although nanoporous silica membranes are promising systems for the molecular separation of gases and liquids, they lack microstructural stability in the presence of water at temperatures as low as 60°C. Prolonged exposure to water causes hydrolysis, resulting in the formation…
Chementator: Ceramic ethane-to-ethylene membrane could replace pyrolysis
Ateam of researchers at the U.S. Department of Energy’s Argonne National Laboratory (ANL, Argonne, Ill.; edlinks.chemengonline.com/7370-568) has developed a membrane capable of producing olefins from alkanes, and reducing wasted energy and pollutants while improving selectivity and yield. Steam cracking, or…
Chementator: This valve trim combines multiple noise-control mechanisms
Flowserve Corp. (Dallas, Tex.; edlinks.chemengonline.com/7370-569) has introduced a new noise-attenuating valve-trim for gaseous applications, one that simultaneously lowers the device’s manufacturing costs while improving its noise reduction capabilities. Like prior noise-attenuation trim, Flowserve’s Valtek Stealth is designed to reduce the…
Chementator: New methods for solving differential equations
The behavior of many different phenomena can be modeled by systems of ordinary differential equations (ODEs), but most ODEs cannot be solved analytically, in which case an approximation to the solution is found by applying numerical integration methods. Dutch-sponsored mathematician…
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…
Chementator: New solid-state heat engine cycles H 2 through MEA like a fuel cell
Johnson ElectroMechanical Systems, Inc. (Atlanta, Ga.; edlinks.chemengonline.com/7369-536) in conjunction with professor Heshmat Aglan of Tuskegee University (Tuskegee, Ala.; edlinks.chemengonline.com/7369-537) has received a $75,000 grant from the U.S. Dept. of Energy (DOE; Washington, D.C.) to further develop the firm’s solid-state heat…
Chementator: Maintain pH, even at cyrogenic temperatures, with this buffer
Biotechnology samples, such as proteins, nucleic acids, biological specimens and pharmaceuticals, are typically stored frozen to extend their shelf life. However, a problem that has plagued researchers for decades is that the buffers used to maintain the pH of the…
Chementator: Sensor uses microfluidics to sniff for airborne contaminants
Airborne contaminants can be identified within 2 – 3 s with a new sensor developed by researchers at the University of California-Santa Barbara and Stanford University (Calif.). The researchers have founded a company, SpectraFluidics, Inc. (Santa Barbara; edlinks.chemengonline.com/7369-539) to commercialize…
Chementator: Super-oleophobic materials promise revolutionary membranes
A team of researchers from MIT’s (Cambridge, Mass.; edlinks.chemengonline.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…
Chementator: Pumping hot oil
PCM (Paris, France; edlinks.chemengonline.com/7369-541) has introduced what is claimed to be the world’s first all-metal progressing cavity pump (PCP). PCM Vulcain is capable of pumping extremely hot (350°C) and viscous fluids, making it particularly suitable for the thermal recovery of…