Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > News > Catalyst kinetics revealed

May 21st, 2009

Catalyst kinetics revealed

Abstract:
French and UK scientists have developed a spectroscopy technique that has elucidated the reaction mechanism of a silver-alumina catalyst. The researchers say their approach should allow scientists to fine tune both this catalyst and other industrial heterogeneous catalysts to improve performance.

Silver-alumina catalysts are used in lean burn engines, which conserve fossil fuels and limit carbon dioxide emissions but produce nitrogen oxide, a greenhouse gas. Silver-alumina catalysts help remove this nitrogen oxide by reacting it with carbon monoxide. However, the lack of suitable experimental methods to help clarify exactly how supported precious metal catalysts like this work at the molecular level has proved a major obstacle in improving efficiency.

Now, Frédéric Thibault-Starzyk from ENSICAEN, the Université de Caen, France, and colleagues, have combined a high-time resolution Fourier-transform infrared spectrometer (FTIS) with a femtosecond laser and revealed a key intermediate step in the reaction between carbon monoxide and nitric oxide. Using their technique they observed a 2 microsecond flip of a cyanide group from a silver nanoparticle to the alumina support, revealing the importance of the silver-alumina interface.

Source:
rsc.org

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Researchers use sound waves to advance optical communication January 22nd, 2018

Piecework at the nano assembly line: Electric fields drive nano-motors a 100,000 times faster than previous methods January 22nd, 2018

Thanks for the memory: NIST takes a deep look at memristors January 20th, 2018

Arrowhead Pharmaceuticals Announces Pricing of Underwritten Public Offering of Common Stock January 18th, 2018

Chemistry

Nanowrinkles could save billions in shipping and aquaculture Surfaces inspired by carnivorous plants delay degradation by marine fouling January 17th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

Paving the way for a non-electric battery to store solar energy: UMass Amherst scientists say a polymer chain organized like a string of Christmas lights assists energy storage December 22nd, 2017

UCLA chemists synthesize narrow ribbons of graphene using only light and heat: Tiny structures could be next-generation solution for smaller electronic devices December 8th, 2017

Announcements

Researchers use sound waves to advance optical communication January 22nd, 2018

Piecework at the nano assembly line: Electric fields drive nano-motors a 100,000 times faster than previous methods January 22nd, 2018

Thanks for the memory: NIST takes a deep look at memristors January 20th, 2018

Arrowhead Pharmaceuticals Announces Pricing of Underwritten Public Offering of Common Stock January 18th, 2018

Research partnerships

Ultra-thin memory storage device paves way for more powerful computing January 17th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

New era in high field superconducting magnets – opening new frontiers in science, nanotechnology and materials discovery January 9th, 2018

Touchy nanotubes work better when clean: Rice, Swansea scientists show that decontaminating nanotubes can simplify nanoscale devices January 4th, 2018

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project