Featured Research

from universities, journals, and other organizations

'Operando' Methods For Understanding Catalysis In Hydrogen Storage

Date:
September 12, 2005
Source:
Pacific Northwest National Laboratory
Summary:
As researchers at Pacific Northwest National Laboratory investigated the hydrogen storage capabilities of amine borane compounds, they knew that a rhodium catalyst readily releases hydrogen from the compound at room temperature. But they weren't sure how it worked. Aside from the scientific quest for knowledge, understanding the mechanism at work with rhodium may help with the development of a more cost-effective catalyst to enable hydrogen storage.

As researchers at Pacific Northwest National Laboratory investigatedthe hydrogen storage capabilities of amineborane compounds, they knew that a rhodium catalyst readily releaseshydrogen from the compound at roomtemperature. But they weren't sure how it worked. Aside from thescientific quest for knowledge, understanding the mechanism at workwith rhodium may help with the development of a more cost-effectivecatalyst to enablehydrogen storage.

PNNL scientists used a type of x-ray spectroscopy available at theAdvanced Photon Source synchrotron at ArgonneNational Laboratory to look at the reaction as it was occurring. Theyfound the active site of the catalystcentered around a cluster of about four rhodium atoms. They also foundthat the catalyst structure during thereaction was different than the structure before and after thereaction, thus highlighting the importance of measuring the catalyststructure during the reaction conditions.

By combining these results with subsequent in situ nuclear magnetic resonance and infrared spectroscopy,researchers were able to "see" what happens to the boron compound as the hydrogen is released. The resultsshow the mechanism of how the amine borane compound binds to the active catalyst and then how the hydrogenmolecule is released as a gas.

The research demonstrates the importance of "operando" methods -or observation of the fundamental molecular level measurements of thecatalyst, the reactants and the products - under practical conditions.The PNNLgroup is using this approach to investigate other chemical reactionswhere little is known about the key catalytic processes.

###

Pacific Northwest National Laboratory researcher Tom Autrey will present his results at 1:30 p.m., Monday, Aug. 29.


Story Source:

The above story is based on materials provided by Pacific Northwest National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

Pacific Northwest National Laboratory. "'Operando' Methods For Understanding Catalysis In Hydrogen Storage." ScienceDaily. ScienceDaily, 12 September 2005. <www.sciencedaily.com/releases/2005/09/050911111434.htm>.
Pacific Northwest National Laboratory. (2005, September 12). 'Operando' Methods For Understanding Catalysis In Hydrogen Storage. ScienceDaily. Retrieved July 26, 2014 from www.sciencedaily.com/releases/2005/09/050911111434.htm
Pacific Northwest National Laboratory. "'Operando' Methods For Understanding Catalysis In Hydrogen Storage." ScienceDaily. www.sciencedaily.com/releases/2005/09/050911111434.htm (accessed July 26, 2014).

Share This




More Matter & Energy News

Saturday, July 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
Powered by NewsLook.com
TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins