Home > Press > Nanostellar Introduces Gold in Oxidation Catalyst That Can Reduce Diesel Hydrocarbon Emissions by as Much as 40 Percent More Than Commercial Catalysts
Boost in catalyst technology aims to slash emissions in light- and heavy-duty diesel engines and other lean-stream applications
Nanostellar Introduces Gold in Oxidation Catalyst That Can Reduce Diesel Hydrocarbon Emissions by as Much as 40 Percent More Than Commercial Catalysts
DETROIT, MI | Posted on April 16th, 2007
Nanostellar, Inc., a leader in nano-engineered catalyst materials, today announced a first in diesel emissions technology: the introduction of gold as an oxidation catalyst. Nanostellar's NS Gold catalyst enables manufacturers of light- and heavy-duty diesel engines to reduce noxious emissions by as much as 40 percent more than existing pure-platinum catalysts at equal cost. Nanostellar introduced its first-generation product, based on a platinum and palladium alloy, in mid-2006, and it achieved 25%-30% higher performance than commercial pure-platinum catalysts. NS Gold, Nanostellar's second-generation product, delivers a further 15%-20% performance increase.
Platinum is the most expensive component of the diesel oxidation catalysts (DOCs) that are required to meet the new, stringent emission regulations for the 14 million light-duty and 2 million heavy-duty diesel vehicles produced annually worldwide. In recent years, Nanostellar and other producers of catalyst materials have introduced the use of palladium to partially replace the four-times more expensive platinum. Now, to further reduce the amount of platinum needed and the overall cost of the catalysts, Nanostellar has pioneered the use of gold - which is currently about half the price of platinum - for diesel emission control.
Independent testing of Nanostellar's NS Gold, in comparison with today's pure-platinum catalysts, has shown that NS Gold increases hydrocarbon oxidation activity by as much as 40 percent at equal precious-metal cost. When compared to emerging platinum-palladium catalysts, NS Gold promises to increase hydrocarbon oxidation activity by 15-20 percent at equal precious-metal cost. A tri-metal formulation of gold, platinum, and palladium, NS Gold allows the proportions of each metal to be adjusted to help catalyst systems engineers meet engine-specific performance targets and stabilize the overall cost of diesel catalysts, despite fluctuations in the price of precious metals.
"Not only does NS Gold break performance barriers imposed by mixed platinum and palladium catalysts, but also its performance can be more easily tuned to the characteristics of a variety of diesel engines," said Pankaj Dhingra, CEO of Nanostellar. "We are excited to offer NS Gold to improve the cost equation for the diesel industry. Gold is not new to catalyst scientists, but this is the first time it has been successfully adapted for use in automotive diesel oxidation catalysts."
According to Dhingra, the continued evolution and maturity of Nanostellar's Rational Catalyst Design methodology brought NS Gold into existence in record time. "Rational Design combines computational approaches with targeted experiments to accelerate the development of new materials," he explained "Nanostellar has over 50 man-years of Rational Catalyst Design experience and a substantial database of catalyst-specific knowledge, developed from both computational and experimental approaches. We have unique algorithms and software that address computational catalyst design, along with proprietary synthesis technologies and novel testing methods that provide a detailed understanding of catalytic processes."
NS Gold is potentially suitable for treating all lean-stream exhaust, where air is in excess of fuel-borne hydrocarbon gases. Applications include, but are not limited to, treating particulates and hydrocarbons in soot filters, stationary-source volatile organic compound (VOC) emissions, and ammonia slip in selective catalytic reduction (SCR) systems.
NS Gold is immediately available for targeted application-specific testing. Production quantities will be available as production programs are identified and released.
About Nanostellar, Inc.
Nanostellar, Inc. provides diesel automotive and stationary power industries with nano-engineered catalyst materials that reduce exhaust emissions and increase the effectiveness of precious metals in catalysts. Focusing in the fields of quantum computational nanoscience, chemistry, materials science, and chemical engineering, Nanostellar utilizes Rational Catalyst Design, which combines computational approaches with targeted experiments, to accelerate the development of new materials. Headquartered in Redwood City, California, Nanostellar is funded by premier investors including 3i, Khosla Ventures, Monitor Ventures, Firelake Capital Management LLC, and AsiaTech Management.
Nanostellar is a registered trademark and NS Gold is a trademark of Nanostellar, Inc. All other brands, products, or service names are or may be trademarks or service marks of their respective owners.
For more information, please click here
Copyright © Nanostellar, Inc.
If you have a comment, please Contact
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Nanoscale worms provide new route to nano-necklace structures March 29th, 2015
Solving molybdenum disulfide's 'thin' problem: Research team increases material's light emission by twelve times March 29th, 2015
A first glimpse inside a macroscopic quantum state March 28th, 2015
DFG to Establish One Clinical Research Unit and Five Research Units: New Projects to Investigate Complications in Pregnancy, Particle Physics, Nanoparticles, Implants and Transport Planning / Approximately 13 Million Euros in Funding for an Initial Three-Year Period March 28th, 2015
Young NTU Singapore spin-off clinches S$4.3 million joint venture with Chinese commercial giant March 23rd, 2015
New processing technology converts packing peanuts to battery components March 22nd, 2015
EU Funded PCATDES Project has completed its half-period with success March 19th, 2015
Are current water treatment methods sufficient to remove harmful engineered nanoparticle? March 10th, 2015
Clean energy future: New cheap and efficient electrode for splitting water March 18th, 2015
Imperfect graphene opens door to better fuel cells: Membrane could lead to fast-charging batteries for transportation March 18th, 2015
Researchers synthesize new thin-film material for use in fuel cells: Article in the journal APL Materials shows how to grow Bi2Pt2O7 pyrochlore, potentially a more effective cathode for future fuel cells March 10th, 2015
Glass coating improves battery performance: To improve lithium-sulfur batteries, researchers added glass cage-like coating and graphene oxide March 2nd, 2015