Processing & Handling
Stay-clean surfaces
Surfaces treated with Top on Top — a new surface refinement technology developed by Degussa AG (Düsseldorf, Germany; edlinks.chemengonline.com/6519-552) — are easy to clean and remain clean for months, according to Degussa. The product consists of two components that when…
Making Emulsions
When Estee Lauder begin stirring up recipes for facial creams recipes in her kitchen some 70 years ago — the start of a $6.5-billion cosmetics empire that still bears her name — making high-purity emulsions was…
This efficient micromixer is less prone to fouling
By repetitive dividing and merging of laminar flows within complex patterns of narrow (25–40 µm) channels, static micromixers are very efficient at making homogeneous mixtures. However, the narrow channels are susceptible to clogging, and the cost to precisely manufacture the…
This catalyst converts cellulose into sugar alcohols
Cellulose accounts for about 40% of the planet’s total photosynthesis yield (about 1.8 trillion m.t./yr), but the material has not been fully utilized as a chemical resource so far. That’s because the methods currently available for converting cellulose into useful…
A cleaner way to remove olefins from aromatics
ExxonMobil Chemical Technology Licensing LLC (Houston, Tex.; edlinks.chemengonline.com/6518-541) has commercialized its new Olgone technology, a catalyst-based process for removing olefins from aromatic streams. If not removed, such olefinic materials interfere with downstream equipment, adsorbents, sieves and catalysts, says the company.…
Progress on H2O2-based process to make PO
Last September, construction commenced on the world's first commercial-scale hydrogen peroxide, propylene oxide (HPPO) plant at the Antwerp, Belgium, site of BASF AG (Ludwigshafen, Germany; edlinks.chemengonline.com/6518-542). The 300,000 m.t./yr facility is a joint venture of BASF and Dow Chemical Co.…
Air separation: Mature processes, modern improvements
The fortunes of many an industrial sector have risen and fallen in the face of fluctuating oil and gas prices. Today, the industrial gas industry’s fortunes are being buoyed — in a roundabout way — by the…
Chiral catalyst
Chemists at Boston College (Chestnut Hill, Mass.; edlinks.chemengonline.com/6517-546) have discovered a silylation catalyst that attaches a silicon atom to an alcohol group not only with high selectivity, but also in such a way that only one enantiomer is formed. Silyation…
Poplar’s code
Researchers from 34 institutions from around the world have completed the first DNA sequence for a tree, the black cottonwood or Populus trichocarpa (poplar). This poplar's rapid growth and relatively compact genome size (480 million nucleotide units, or 1/40th as…
Hot enzymes
Plant physiologist Cynthia Henson and colleagues at the ARS Cereal Crops Research Unit (Madison, Wisc.; edlinks.chemengonline.com/6517-552) have designed three thermophilic barley enzymes, which perform exceptionally well at around 70°C. As a result, the enzymes can yield up to 30% more…