Navigation Links
More solid than solid: A potential hydrogen-storage compound
Date:4/2/2008

One of the key engineering challenges to building a clean, efficient, hydrogen-powered car is how to design the fuel tank. Storing enough raw hydrogen for a reasonable driving range would require either impractically high pressures for gaseous hydrogen or extremely low temperatures for liquid hydrogen. In a new paper* researchers at the National Institute of Standards and Technologys Center for Neutron Research (NCNR) have demonstrated that a novel class of materials could enable a practical hydrogen fuel tank.

A research team from NIST, the University of Maryland and the California Institute of Technology studied metal-organic frameworks (MOFs). One of several classes of materials that can bind and release hydrogen under the right conditions, they have some distinct advantages over competitors. In principle they could be engineered so that refueling is as easy as pumping gas at a service station is today, and MOFs dont require the high temperatures (110 to 500 C) some other materials need to release hydrogen.

In particular, the team examined MOF-74, a porous crystalline powder developed at the University of California at Los Angeles. MOF-74 resembles a series of tightly packed straws comprised of mostly carbon atoms with columns of zinc ions running down the inside walls. A gram of the stuff has about the same surface area as two basketball courts.

The researchers used neutron scattering and gas adsorption techniques to determine that at 77 K (-196 C), MOF-74 can adsorb more hydrogen than any unpressurized framework structure studied to datepacking the molecules in more densely than they would be if frozen in a block.

NCNR scientist Craig Brown says that, though his team doesnt understand exactly what allows the hydrogen to bond in this fashion, they think the zinc center has some interesting properties.

When we started doing experiments, we realized the metal interaction doesnt just increase the temperature at which hydrogen can be stored, but it also increases the density above that in solid hydrogen, Brown says. This is absolutely the first time this has been encountered without having to use pressure.

Although the liquid-nitrogen temperature of MOF-74 is not exactly temperate, its easier to reach than the temperature of solid hydrogen (-269 C), and one of the goals of this research is to achieve energy densities great enough to be as economical as gasoline at ambient, and thus less costly, temperatures. MOF-74 is a step forward in terms of understanding energy density, but there are other factors left to be dealt with that, once addressed, could further increase the temperature at which the fuel can be stored. Fully understanding the physics of the interaction might allow scientists to develop means for removing refrigeration or insulation, both of which are costly in terms of fuel economy, fuel production, or both.


'/>"/>

Contact: Mark Esser
mark.esser@nist.gov
301-975-2767
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Related biology technology :

1. SAFC Expands Hi-Potency API Manufacturing and Introduces Solid-Form Testing at Its Madison Facility
2. SeqWright Unveils ABI SOLiD(TM) Next Generation Genetic Analysis System
3. Ranbaxy to Consolidate Position in Biopharmaceuticals and Speciality Injectables Including Oncology
4. SAFC Hitech(TM) Joins Aviza and ST Microelectronics for Solid State Technology ALD Webcast
5. Caliper Life Sciences Introduces Zephyr SPE Workstation to Improve Efficiency of Solid Phase Extraction
6. Masada Teams With Leading Waste Management Firm to Produce Ethanol From Municipal Solid Waste in the Dominican Republic
7. ADVENTRX Announces Consolidation of Clinical and Management Positions
8. UW paper in Science shows how some solids mimic liquids on nanoscale
9. Halogen Announces Record Year - Company Solidifies Leadership Position, Secures Strategic Wins Over Competition
10. Assured Pharmacy Consolidates Portland, Oregon Pharmacy
11. Systems Medicine (SM), a Subsidiary of Cell Therapeutics, Inc. (CTI), Announces Execution of CRADA with NCI/NIH to Develop Potential Cancer Treatments Targeting the Insulin Growth Factor (IGF) Pathway
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
More solid than solid: A potential hydrogen-storage compound
(Date:3/24/2017)... , March 24, 2017 Sinovac Biotech Ltd. ("Sinovac" or ... China , today announced that its board of ... date of the plan from March 27, 2017 to March 27, ... About Sinovac Biotech Ltd. ... Sinovac Biotech Ltd. is a ...
(Date:3/24/2017)... 24, 2017 Agenus Inc. (NASDAQ: AGEN), an ... and cancer vaccines, today announced participation at the following ... William Blair and Maidstone Life Sciences conference "Cancer Immunotherapy ... New York, NY . Agenus will ... at 9:40 am: Robert B. Stein , M.D., ...
(Date:3/23/2017)... Mar 23, 2017 Research and Markets ... Markets" report to their offering. ... The Global Market for ... in 2016 at a CAGR of 8.9%, ... non-energetic bioproducts into seven major product segments: bio-derived chemicals, biofuels, ...
(Date:3/23/2017)... , March 23, 2017  GlobeImmune, Inc. today ... for the sale of 12,835,490 shares of its common ...  ecosystem of companies. In connection with the sale of its ... in cash and issue to GlobeImmune 200,000 shares, an ... "We are pleased to enter into ...
Breaking Biology Technology:
(Date:3/2/2017)... March 2, 2017 Summary This ... understand Merck KGaA and its partnering interests and activities ... Description The Partnering Deals and Alliance since ... activity of one of the world,s leading life sciences ... upon purchase to ensure inclusion of the most up ...
(Date:2/28/2017)... DORTMUND, Germany , February 28, 2017 ... ... Amsterdam from 14 to 16 March, ... to destination, and show how seamless travel is a real benefit ... Materna has added biometrics to their passenger touch point solutions to ...
(Date:2/22/2017)... -- With the biometrics market to exceed $10 ... that innovative and agile startups must incorporate into ... changing competitive landscape: multifactor authentication (MFA), point-of-sale (PoS), ... "Companies can no longer afford to cut corners ... Pavlakis , Industry Analyst at ABI Research. "Pairing ...
Breaking Biology News(10 mins):