I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chementator Briefs
Ultrathin membrane Researchers led by professors Hideto Matsuyama and Tomohisa…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUS
Focus on Sensors
Wireless transmitters save on level sensor installation Reduce the cost…
NEW PRODUCTS + Show More SHOW PREVIEWS

Comment Processing & Handling

New catalysts for Baeyer-Villiger oxidation reactions

By Tetsuo Satoh |

Kazuaki Ishihara and his group at Nagoya University (Japan; www.ishihara-lab.net) have established a new, environment friendly reaction technology — using Baeyer-Villiger oxidations — for selectively oxidizing ketones into esters. The reaction uses hydrogen peroxide as the oxidant, and has potential as a safer alternative to the conventional industrial route for making the nylon precursor epsilon-caprolactam from epsilon-caprolactone. Instead of H2O2, industrial routes have used acetyl hydroperoxide for making epsilon-caprolactam, which required very careful handling of explosive acetyl hydroperoxide, and also purification steps for removing byproducts and the corrosive, smelly residual catalyst after the reaction. The new route uses hydrogen peroxide with an effective oxidation-acceleration catalyst system, both of which are easier to handle, and no byproducts are produced. The researchers found that two environmentally friendly catalysts — lithium tetrakis(pentafluorophenyl)borate or Li[B(C6F5)4], and calcium tetrakis(pentafluorophenyl) or Ca[B(C6F5)4] — can be used in both hydrophilic systems with H2O2 as the oxidant, and in lipophilic systems, including those with ketone substrates and ester products. These…
Related Content

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media
PTA production: Lowering OPEX without compromising on quality
Sure that zero means zero in your zero-liquid discharge (ZLD) process?
How separation processes profit from Industrial Internet of Things (IIoT) solutions

View More