Navigation Links
Water acts as catalyst in explosives
Date:3/20/2009

LIVERMORE, Calif. - The most abundant material on Earth exhibits some unusual chemical properties when placed under extreme conditions.

Lawrence Livermore National Laboratory scientists have shown that water, in hot dense environments, plays an unexpected role in catalyzing complex explosive reactions. A catalyst is a compound that speeds chemical reactions without being consumed. Platinum and enzymes are common catalysts. But water rarely, if ever, acts as a catalyst under ordinary conditions.

Detonations of high explosives made up of oxygen and hydrogen produce water at thousands of degrees Kelvin and up to 100,000 atmospheres of pressure, similar to conditions in the interiors of giant planets.

While the properties of pure water at high pressures and temperatures have been studied for years, this extreme water in a reactive environment has never been studied. Until now.

Using first-principle atomistic simulations of the detonation of the high explosive PETN (pentaerythritol tetranitrate), the team discovered that in water, when one hydrogen atom serves as a reducer and the hydroxide (OH) serves as an oxidizer, the atoms act as a dynamic team that transports oxygen between reaction centers.

"This was news to us," said lead researcher Christine Wu. "This suggests that water also may catalyze reactions in other explosives and in planetary interiors."

This finding is contrary to the current view that water is simply a stable detonation product.

"Under extreme conditions, water is chemically peculiar because of its frequent dissociations," Wu said. "As you compress it to the conditions you'd find in the interior of a planet, the hydrogen of a water molecule starts to move around very fast."

In the molecular dynamic simulations using the Lab's BlueGene L supercomputer, Wu and colleagues Larry Fried, Lin Yang, Nir Goldman and Sorin Bastea found that the hydrogen (H) and hydroxide (OH) atoms in
'/>"/>

Contact: Anne Stark
stark8@llnl.gov
925-422-9799
DOE/Lawrence Livermore National Laboratory
Source:Eurekalert

Page: 1 2

Related biology news :

1. Research to secure a safe water supply
2. Dancing adatoms help chemists understand how water molecules split
3. Getting into hot water
4. EPA to study Puerto Rico waters and marine habitat
5. An underwater drugstore?
6. Forget the freezer: Research suggests novel way to control water behavior
7. Little Salt Spring underwater archeological site in Florida receives new funding
8. Nutrient pollution chokes marine and freshwater ecosystems
9. Capillary mats labor-saving, economical alternative to hand watering
10. Marine scientists to assess environment before offshore drilling begins in US arctic waters
11. Case Western Reserve researchers looking at light-induced toxins in air and water
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... and POINT ROBERTS, Washington , January ... covering leading sectors including technology and tech stocks, releases video ... featuring master pickpocket and security consultant Apollo Robbins . ... and talks about the Wocket™ biometric smart wallet, a product ...
(Date:1/22/2015)... Infinisource has launched its new NXG series of time clocks ... a higher standard for collecting attendance and labor data and ... installation, touch screen interface and seamless connection to cloud-based iSolved, ... solution for the small to mid-size employer. The ...
(Date:12/19/2014)... Research and Markets ( http://www.researchandmarkets.com/research/8kmfcn/iphone_5s ) has ... Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report" ... http://photos.prnewswire.com/prnh/20130307/600769 Following the acquisition of ... feature with the iPhone 5S. It is currently the ...
Breaking Biology News(10 mins):Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 2Apollo Robbins Talks about the Illusion of Personal Safety and How Easily Your Wallet is Stolen; If a Wocket Wallet is Stolen the Thief Can't do Anything With it! 3Infinisource's NXG series sets new time clock standard 2iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 2
... rex was far from a plodding Cretaceous era scavenger whose ... freakishly big head. T. rex ,s athleticism (and ... Alberta graduate student Scott Persons. His extensive research shows that powerful ... hunters of its time. As Persons says, "contrary to ...
... a naturally occurring compound found in strawberries and ... motor problems and delays death in three models ... Salk Institute for Biological Studies. The study, published ... Genetics , sets the stage for further investigations ...
... Evidence from Disneyland suggests that human creativity may ... some scientists believe but as a way to help ... traditions and cultural knowledge, a new study published in ... Tourism Anthropology suggests. Evolutionary psychologist Geoffrey Miller ...
Cached Biology News:T. rex's big tail was its key to speed and hunting prowess 2Natural compound shows promise against Huntington's disease 2Natural compound shows promise against Huntington's disease 3Brain size and a trip to Disneyland 2
(Date:1/23/2015)... , Jan. 23, 2015  Array BioPharma Inc. (NASDAQ: ... a definitive agreement with Novartis Pharma AG to acquire ... in Phase 3 development.  This agreement is conditional on the ... (GSK) on April 22, 2014, which are expected to close ...
(Date:1/22/2015)... GEA Niro Soavi the leader in high ... PandaPLUS 2000, which is ideal for new applications for ... disruption . This compact laboratory homogenizer is the perfect ... food additives and ingredients as well as for the ...
(Date:1/22/2015)... 2015 Crystal Diagnostics (CDx) Xpress System, a ... received AOAC-PTM Certifications for the six non-O157 Shiga toxin-producing E. ... referred to as STEC or the “Big-6”) as well as ... (cfu) per 325 g of raw ground beef and raw ...
(Date:1/22/2015)... Switzerland (PRWEB) January 22, 2015 Selexis ... characterized mammalian Research Cell Banks (RCBs) used for drug ... Research Cell Banks will include Next-Generation Sequencing ... genetic architecture de-risks biologic manufacturing by ensuring the integrity ...
Breaking Biology Technology:Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 2Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 3Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 4Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 5Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 6Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 7GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2
... ,* * * * * * * * * * * ... and the experience has only strengthened our belief that wireless and ... from the 400-plus attendees and 37 demonstrating companies was palpable throughout ... both in our homes and our businesses -- has arrived and ...
... makes. In 1999, charities had raised only $7 million via ... Red Cross. Last year, according to the Chronicle of Philanthropy, ... up to $124.5 million. , ,Charities and their for-profit ... ,In 2003, the Boys & Girls Club of Dane County and ...
... Medical College of Wisconsin, UW-Medical School, the Wisconsin Technology ... television show, Avante's Leaders in the New Economy, that ... Jeffrey Smith, clinical assistant professor of medicine with the ... by Mike Klein, founder and editorial director of the ...
Cached Biology Technology:The News From DEMOmobile 2003 2The News From DEMOmobile 2003 3Whos Starting to Profit Online? Nonprofits. 2The Information Age of Healthcare - Leaders featured on local new economy show 2The Information Age of Healthcare - Leaders featured on local new economy show 3
Mouse monoclonal [CLB-SW16 (formerly 708)] to CD42d (rating: ****) ( Abpromise for all tested applications). entrezGeneID: 2814 SwissProtID: P40197...
ANTI-HUMAN CYTOKINES, GROWTH FACTORS (polyclonal rabbit (or goat) antibodies) Human TARC - Biotin...
Goat polyclonal to Factor VIII, prediluted ( Abpromise for all tested applications). Antigen: Full length native protein (purified) (Human): Factor VIII from blood. Entrez GeneID: 2157 Sw...
Chicken polyclonal to Thioredoxin domain containing 9 ( Abpromise for all tested applications). Antigen: Full length protein (Human) Entrez Gene ID: 10190 Swiss Protein ID: O14530...
Biology Products: