Texas Scientists Use Mullite Oxide to Clean Diesel Exhaust in Cars
August 20, 2012 5:31 AM
comment(s) - last by
Dr. Kyeongjae Cho, study leader
(Source: UT Dallas)
Mullite replaces platinum, a precious metal that is expensive to mine and limited in supply
University of Texas at Dallas scientists found that a material called mullite, which is from a family of oxides, could replace platinum on diesel exhaust from automotives.
Platinum has been the go-to material for
because diesel exhaust emits more nitric oxide and nitrogen dioxode than gasoline vehicles (however, diesel engines are generally more efficient). To reduce the amount of these pollutants from diesel exhaust, platinum is commonly used.
The problem is that platinum is a precious metal, mainly because it is limited and very expensive to mine. For 10 tons of platinum ore mined, only 1 ounce is usually usable.
Another issue was that diesel engine exhaust was recently added to the
World Health Organization's list of items that are carcinogenic in humans
. Hence, finding an alternative that could clean diesel exhaust up further was pretty important.
Enter Dr. Kyeongjae Cho, study leader and professor of materials science and engineering and physics at UT Dallas. He and a team of researchers set out to find the alternative, and discovered that mullite was exactly what the doctor ordered.
After synthesizing mullite and using computer models to see how it consumes nitric oxide/nitrogen dioxode, it was discovered that an oxygen-based composition of mullite is not only cheaper to produce than platinum, but it also reduces diesel exhaust pollution 45 percent more than platinum.
"Our goal to move completely away from precious metals and replace them with oxides that can be seen commonly in the environment has been achieved," said Cho. "We've found new possibilities to create renewable, clean energy technology by designing new functional materials without being limited by the supply of precious metals."
This new mullite discovery is already being commercialized as Noxicat.
University of Texas at Dallas
This article is over a month old, voting and posting comments is disabled
8/20/2012 1:21:20 PM
I first read the title as Mullet Oxide instead of Mullite Oxide.
The image of distilled trucker mullets keeping their rig's emissions clean was an amusing one... at least until I slapped my brain into sensibility.
"What would I do? I'd shut it down and give the money back to the shareholders." -- Michael Dell, after being asked what to do with Apple Computer in 1997
Porsche Announces First Diesel for U.S.: 2013 Cayenne Diesel
April 4, 2012, 8:13 AM
WHO Labels Cell Phone Radiation as a Possible Carcinogenic Hazard
May 31, 2011, 7:03 PM
Study Predicts Self-Driving Vehicles Could Rake in Billions
March 6, 2015, 8:34 AM
Dual-Motor Tesla Model S P85D's "Insane Mode" Shocks Passengers
January 28, 2015, 11:18 PM
2016 Cadillac CTS-V Packs 640 hp Punch with 200 mph Reach
January 23, 2015, 3:25 PM
BMW Testing Tech to Allow Users to Auto-Park, Summon Cars Via Smartwatch
December 16, 2014, 9:30 AM
Lamborghini Offers Up $6,000 Leather-Bound Android Smartphone
December 12, 2014, 3:12 PM
Quick Note: GM Teases Next Generation Chevrolet Volt
November 20, 2014, 3:26 PM
Most Popular Articles
WSJ Report Implies That Google Leveraged Lobbying to Kill Antitrust Abuse Probe
March 25, 2015, 5:37 PM
Food Chemists at Italy's Barilla Claim to Have Perfect Instant Noodles w/out Frying
March 26, 2015, 4:25 PM
Apple CEO's Pledge to Give Away His Fortune is Worth More Than Face Value
March 27, 2015, 5:08 PM
Church of Scientology Buys Twitter, Facebook Space to Attack HBO Documentary
March 30, 2015, 4:27 PM
Google Readies Gmail "Pony Express" to Combat Facebook's Messenger Payments
March 25, 2015, 11:43 AM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information