Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Spontaneous ignition discovery has ORNL researcher fired up

Abstract:
Novel method to achieve spontaneous ignition and sustained combustion at room temperature

Spontaneous ignition discovery has ORNL researcher fired up

Oak Ridge, TN | April 19, 2005

Zhiyu Hu believes it is possible to match nature's highly efficient method to convert chemicals into thermal energy at room temperature, and he has data and a published paper to support his theory.

In a paper scheduled to appear in the May 18 print issue of the American Chemical Society's Energy & Fuels, Oak Ridge National Laboratory's Hu describes a novel method to achieve spontaneous ignition and sustained combustion at room temperature. He achieves this "nano-catalytic reaction" with nothing but nanometer-sized particles of platinum stuck to fibers of glass wool in a small jar with methanol and air with no source of external ignition.

Although this began as little more than a curiosity, Hu quickly realized that the implications could be significant because of the potential gains in energy conversion and utilization. Hu now cites possibilities in the area of distributed power generation and perhaps military and homeland defense.

While additional research needs to be performed to understand the phenomena, Hu notes that natural organisms such as microbes, plants and animals obtain energy from oxidation of the same organic chemicals at their physiological, or body, temperatures. Many of these biological reactions also use metals as part of their enzyme catalysts. Still, this is a surprising result in the field of metal catalysis.

"Since the caveman days, we have burned things to utilize their energy, and the high temperatures and the entire process have created a lot of problems that we're then forced to deal with," said Hu, a physicist in the Life Sciences Division of the Department of Energy's ORNL.

Citing the wisdom of one of the all-time great scientists, Hu noted that Albert Einstein once said, "Problems cannot be solved at the same level of awareness that created them." So, according to Hu, the best way to solve the energy crisis is to replace our existing fuel consuming method with one that has much higher efficiency and less environmental impact.

Indeed, there is room for efficiency improvement, Hu said, noting that an internal combustion engine is only about 21 percent efficient. The process also creates environmental concerns because of nitrogen oxide emissions that form because of the high combustion temperatures. Even an advanced fuel cell is only about 50 percent efficient, and it must be operated at a temperature that is much higher than our body or room temperature, which requires costly components able to withstand harsh conditions.

"What we have is the possibility of retrieving energy at a lower temperature with greater efficiency and lower environmental effects," Hu said.

The method outlined in the paper "Nano-catalytic spontaneous ignition and self-supporting room-temperature combustion," co-written by ORNL's Vassil Boiadjiev and Thomas Thundat, was discovered unintentionally. Hu was actually conducting another experiment with platinum particles, methanol and cotton swabs when he noticed the mixture produced smoke. He consulted with Thundat and others who encouraged him to figure out what was happening.

"This wasn't research that was funded, so I worked evenings and weekends to try to understand why and how this happened," Hu said. He replicated the discovery numerous times under different conditions and noticed that the reactions can reach high temperatures of greater than 600 degrees Celsius and low temperatures of just a few tenths of a degree above room temperature.

Hu also learned that he can control the reaction by varying the fuel-air mixture, and he discovered that the process can be dramatically changed by reducing the particle size and changing the particle's morphology, or shape.

####


Oak Ridge National Laboratory is managed by UT-Battelle for the Department of Energy.



Media Contact:
Ron Walli
Communications and External Relations
865.576.0226

Copyright Oak Ridge National Laboratory

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Possible Futures

Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015

Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015

Nanocomposites Market Growth, Industry Outlook To 2020 by Grand View Research, Inc. March 21st, 2015

Nanotechnology Drug Delivery Market in the US 2012-2016 : Latest Report Available by Radiant Insights, Inc March 16th, 2015

Discoveries

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

Designer's toolkit for dynamic DNA nanomachines: Arm-waving nanorobot signals new flexibility in DNA origami March 27th, 2015

Materials/Metamaterials

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

Chemists make new silicon-based nanomaterials March 27th, 2015

UT Dallas engineers twist nanofibers to create structures tougher than bulletproof vests March 27th, 2015

Using magnetic fields to understand high-temperature superconductivity: Los Alamos explores experimental path to potential 'next theory of superconductivity' March 27th, 2015

Announcements

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

Environment

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

Energy

Solving molybdenum disulfide's 'thin' problem: Research team increases material's light emission by twelve times March 29th, 2015

LAMDAMAP 2015 hosted by the University March 26th, 2015

SUNY Poly & M+W Make Major Announcement: Major Expansion To Include M+W Owned Gehrlicher Solar America Corporation That Will Create up to 400 Jobs to Develop Solar Power Plants at SUNY Poly Sites Across New York State March 26th, 2015

Hong Kong Investors Bullish on Dais Analytic Invest $5.75M, Provide $60M Contract, and Create New Joint Venture Company March 26th, 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