Featured Research

from universities, journals, and other organizations

Green Catalysts Provide Promise For Cleaning Toxins And Pollutants

Date:
August 20, 2008
Source:
Carnegie Mellon University
Summary:
Tetra-Amido Macrocyclic Ligands are environmentally friendly catalysts with a host of applications for reducing and cleaning up pollutants, and a prime example of "green chemistry." Carnegie Mellon University's Terry Collins, the catalyst's inventor, believes that the small-molecule catalysts have the potential to be even more effective than previously proven.

Tetra-Amido Macrocyclic Ligands (TAMLs) are environmentally friendly catalysts with a host of applications for reducing and cleaning up pollutants, and a prime example of "green chemistry." Carnegie Mellon University's Terry Collins, the catalyst's inventor, believes that the small-molecule catalysts have the potential to be even more effective than previously proven.

Collins discussed how iron-TAMLs (Fe-TAMLs) work and areas for further research, citing evidence from mechanistic and kinetic studies of the catalyst on Monday, Aug. 18 at the 236th national meeting of the American Chemical Society in Philadelphia.

The oxidation catalysts are the first highly effective mimics of peroxidase enzymes. When partnered with hydrogen peroxide, they are able to convert harmful pollutants into less toxic substances. Made from the common elements of biochemistry, carbon, hydrogen, nitrogen and oxygen around a reactive iron core, Fe-TAMLs are less toxic and usable at extremely low concentrations. Additionally, their composition also results in very strong chemical bonds that are not broken down by the highly reactive oxygen intermediaries formed during the reaction with hydrogen peroxide.

"Our recent studies into what occurs during the chemical reaction caused by TAMLs proves that the catalysts are indeed really close mimics of peroxidase enzymes," said Collins, the Thomas Lord Professor of Chemistry and director of the Center for Green Science at Carnegie Mellon. "By knowing the mechanics of the reactions, we can fine tune the catalysts for even better performance."

Research by the Collins group at Carnegie Mellon has shown that Fe-TAMLs have enormous potential to provide clean and safe alternatives to existing industrial practices and provide ways to remediate other pressing environmental problems that currently lack solutions. The catalysts have proven effective in degrading estrogenic compounds, cleaning waste water from textile manufacturing, reducing fuel pollutants, treating pulp and paper processing byproducts and decontaminating a benign simulant of anthrax.

For more information on the Institute for Green Science at Carnegie Mellon, visit: http://www.chem.cmu.edu/groups/Collins/index.html.


Story Source:

The above story is based on materials provided by Carnegie Mellon University. Note: Materials may be edited for content and length.


Cite This Page:

Carnegie Mellon University. "Green Catalysts Provide Promise For Cleaning Toxins And Pollutants." ScienceDaily. ScienceDaily, 20 August 2008. <www.sciencedaily.com/releases/2008/08/080818101325.htm>.
Carnegie Mellon University. (2008, August 20). Green Catalysts Provide Promise For Cleaning Toxins And Pollutants. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2008/08/080818101325.htm
Carnegie Mellon University. "Green Catalysts Provide Promise For Cleaning Toxins And Pollutants." ScienceDaily. www.sciencedaily.com/releases/2008/08/080818101325.htm (accessed April 17, 2014).

Share This



More Matter & Energy News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Small Reactors Could Be Future of Nuclear Energy

Small Reactors Could Be Future of Nuclear Energy

AP (Apr. 17, 2014) After the Fukushima nuclear disaster, the industry fell under intense scrutiny. Now, small underground nuclear power plants are being considered as the possible future of the nuclear energy. (April 17) Video provided by AP
Powered by NewsLook.com
Honda's New ASIMO Robot, More Human-Like Than Ever

Honda's New ASIMO Robot, More Human-Like Than Ever

AFP (Apr. 17, 2014) It walks and runs, even up and down stairs. It can open a bottle and serve a drink, and politely tries to shake hands with a stranger. Meet the latest ASIMO, Honda's humanoid robot. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com
German Researchers Crack Samsung's Fingerprint Scanner

German Researchers Crack Samsung's Fingerprint Scanner

Newsy (Apr. 16, 2014) German researchers have used a fake fingerprint made from glue to bypass the fingerprint security system on Samsung's new Galaxy S5 smartphone. Video provided by Newsy
Powered by NewsLook.com
Porsche CEO Says Supercar Is Not Dead: Cue the Spyder 918

Porsche CEO Says Supercar Is Not Dead: Cue the Spyder 918

TheStreet (Apr. 16, 2014) The Porsche Spyder 918 proves that, in an automotive world obsessed with fuel efficiency, the supercar is not dead. Porsche North America CEO Detlev von Platen attributes the brand's consistent sales growth -- 21% in 2013 -- with an investment in new technology and expanded performance dynamics. The hybrid Spyder 918 has 887 horsepower and 944 lb-ft of torque, but it can run 18 miles on just an electric charge. The $845,000 vehicle is not a consumer-targeted vehicle but a brand statement. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins