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.
Сalculations with Nanoscale Smart Particles August 19th, 2014
Life on Mars? Implications of a newly discovered mineral-rich structure August 19th, 2014
Harris & Harris Group Letter to Shareholders on Website August 19th, 2014
Electrical engineers take major step toward photonic circuits: Team invents non-metallic metamaterial that enables them to 'compress' and contain light August 19th, 2014
Production of Toxic Ion Nanosorbents with High Sorption Capacity in Iran August 17th, 2014
PerkinElmer to Display Innovative Detection and Informatics Offerings at ACS National Meeting & Exposition Detection, Data Visualization and Analytics for Chemistry Professionals August 8th, 2014
Nature inspires a greener way to make colorful plastics July 30th, 2014
Iranian Scientists Use Waste Cotton Fibers to Produce Cellulose Nanoparticles July 29th, 2014
New Method Provides Nanoscale Details of Electrochemical Reactions in Electric Vehicle Battery Materials August 4th, 2014
A protecting umbrella against oxygen: Toward fuel cells built from renewable and abundant components - Scientists from Bochum und Mülheim report in NATURE Chemistry August 4th, 2014
Stanford researchers seek 'Holy Grail' in battery design: Pure lithium anode closer to reality with development of protective layer of interconnected carbon domes August 1st, 2014
Stanford team achieves 'holy grail' of battery design: A stable lithium anode - Engineers use carbon nanospheres to protect lithium from the reactive and expansive problems that have restricted its use as an anode July 27th, 2014