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 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.

PNNL scientists used a type of x-ray spectroscopy available at the Advanced Photon Source synchrotron at Argonne National Laboratory to look at the reaction as it was occurring. They found the active site of the catalyst centered around a cluster of about four rhodium atoms. They also found that the catalyst structure during the reaction was different than the structure before and after the reaction, thus highlighting the importance of measuring the catalyst structure 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 results show the mechanism of how the amine borane compound binds to the active catalyst and then how the hydrogen molecule is released as a gas.

The research demonstrates the importance of "operando" methods - or observation of the fundamental molecular level measurements of the catalyst, the reactants and the products - under practical conditions. The PNNL group is using this approach to investigate other chemical reactions where 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 April 24, 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 April 24, 2014).

Share This



More Matter & Energy News

Thursday, April 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

UN Joint Mission Starts Removing Landmines in Cyprus

UN Joint Mission Starts Removing Landmines in Cyprus

AFP (Apr. 23, 2014) The UN mission in Cyprus (UNFICYP) led a mine clearance demonstration on Wednesday in the UN-controlled buffer zone where demining operations are being conducted near the Cypriot village of Mammari. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Air Force: $4.2B Saved from Grounding A-10s

Air Force: $4.2B Saved from Grounding A-10s

AP (Apr. 23, 2014) Speaking about the future of the United States Air Force, Chief of Staff Gen. Mark Welsh says the choice to divest the A-10 fleet was logical and least impactful. (April 23) Video provided by AP
Powered by NewsLook.com
Jets Fuel Jump in Boeing's Revenue

Jets Fuel Jump in Boeing's Revenue

Reuters - Business Video Online (Apr. 23, 2014) A sharp rise in revenue for commercial jets offset a decline in Boeing's defense business. And a big increase in deliveries lifted profitability. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Is North Korea Planning Nuclear Test #4?

Is North Korea Planning Nuclear Test #4?

Newsy (Apr. 22, 2014) South Korean officials say North Korea is preparing to conduct another nuclear test, but is Pyongyang just bluffing this time? Video provided by Newsy
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