Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

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

Maximum Precision in 3D Printing: New complete solution makes additive manufacturing standard for microfabrication February 26th, 2015

Real-time observation of bond formation by using femtosecond X-ray liquidography February 26th, 2015

Bruker-Sponsored Sixth AFM BioMed Conference Highlights Increasing Impact of AFM in Biological Applications February 26th, 2015

Graphene shows potential as novel anti-cancer therapeutic strategy: University of Manchester scientists have used graphene to target and neutralise cancer stem cells while not harming other cells February 26th, 2015

Chemistry

Chromium-Centered Cycloparaphenylene Rings as New Tools for Making Functionalized Nanocarbons February 24th, 2015

Stretch and relax! -- Losing 1 electron switches magnetism on in dichromium February 23rd, 2015

A straightforward, rapid and continuous method to protect MOF nanocrystals against water February 9th, 2015

Research shows benefits of silicon carbide for sensors in harsh environments: Advantages identified across industries February 9th, 2015

Announcements

Maximum Precision in 3D Printing: New complete solution makes additive manufacturing standard for microfabrication February 26th, 2015

Real-time observation of bond formation by using femtosecond X-ray liquidography February 26th, 2015

Bruker-Sponsored Sixth AFM BioMed Conference Highlights Increasing Impact of AFM in Biological Applications February 26th, 2015

Graphene shows potential as novel anti-cancer therapeutic strategy: University of Manchester scientists have used graphene to target and neutralise cancer stem cells while not harming other cells February 26th, 2015

Research partnerships

European roadmap for graphene science and technology published February 25th, 2015

KIT Increases Commitment in Asia: DAAD Funds Two New Projects: Strategic Partnerships with Chinese Universities and Communi-cation Technologies Network February 22nd, 2015

Increasing Efficiency of Cooling Devices in Oil, Gas Industries February 21st, 2015

Perfect colors, captured with one ultra-thin lens: No need for color correction -- Harvard physicists' flat optics, using nanotechnology, get it right the first time February 19th, 2015

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







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE