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Articles in 'Chemistry' (Page 2)
New method could improve economics of sweetening natural gas
— 11 Mar 2011 15:55Natural gas extracted from the nation's coal beds and methane-rich geologic features must first be purged of hydrogen sulphide before it can be used as fuel. Until now, processing methods have often proved to be inefficient, requiring large amounts of heat…
New method for studying molecule reactions a breakthrough in organic chemistry
— 11 Mar 2011 15:40Good chemists are passive-aggressive - they manipulate molecules without actually touching them…
Opalinus Clay as a potential host rock for nuclear waste repositories
— 8 Mar 2011 14:29Scientists at Johannes Gutenberg University Mainz (JGU), Germany, have studied natural claystone in the laboratory for more than four years in order to determine how the radioactive elements plutonium and neptunium react with this rock…
BESC scores a first with isobutanol directly from cellulose
— 8 Mar 2011 13:59In the quest for inexpensive biofuels, cellulose proved no match for a bioprocessing strategy and genetically engineered microbe developed by researchers at the Department of Energy's BioEnergy Science Centre…
Iowa State, Ames Lab researcher hunts for green catalysts
— 8 Mar 2011 12:59L. Keith Woo is searching for cleaner, greener chemical reactions. Woo, an Iowa State University professor of chemistry and an associate of the U.S. Department of Energy's Ames Laboratory, has studied catalysts and the chemical reactions they affect for more than 25 years. And these days, his focus is on green catalysis…
Scripps Research scientists create cell assembly line
— 4 Mar 2011 13:08Borrowing a page from modern manufacturing, scientists from the Florida campus of The Scripps Research Institute have built a microscopic assembly line that mass produces synthetic cell-like compartments…
New kind of optical fibre developed
— 2 Mar 2011 12:58A team of scientists led by John Badding, a professor of chemistry at Penn State University, has developed the very first optical fibre made with a core of zinc selenide - a light-yellow compound that can be used as a semiconductor. The new class of optical fibre, which allows for a more effective and liberal manipulation of light, promises to open the door to more versatile laser-radar technology. Such technology could be applied to the development of improved surgical and medical lasers, better countermeasure lasers used by the military, and superior environment-sensing lasers such as those used to measure pollutants and to detect the dissemination of bioterrorist chemical agents. The team's research will be published in the journal Advanced Materials…
Enzyme cocktail could eliminate a step in biofuel process
— 26 Feb 2011 17:12Conversion of biomass to fuel requires several steps: chemical pretreatment to break up the biomass - often dilute (sulphuric) acid, detoxification to remove the toxic chemicals required in pretreatment, and microbial fermentation to convert the soluble sugars to fuels. Virginia Tech researchers have discovered an enzyme mixture that works in the presence of the toxic infused liquid biomass (hydrolysate), meaning that the detoxification step is unnecessary, reducing the cost of producing biofuels as well as increasing biofuel yields by avoiding the production of by-products and synthesis of cell mass…
Researchers discover new way to design metal nanoparticle catalysts
— 23 Feb 2011 19:38Tiny metal nanoparticles are used as catalysts in many reactions, from refining chemicals to producing polymers and biofuels. How well these nanoparticles perform as catalysts for these reactions depend on which of their crystal faces are exposed…
Mimicking photosynthesis path to solar-derived hydrogen fuel
— 20 Feb 2011 16:12Inexpensive hydrogen for automotive or jet fuel may be possible by mimicking photosynthesis, according to a Penn State materials chemist, but a number of problems need to be solved first…
Scientist reveals the secret ingredient of the perfect sandwich
Full spectrum of chemistry to be served by state-of-the-art building