کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1273567 | 1497619 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Hydrogen desorption studies of NaAlH4 and LiAlH4 by in situ heating in an ESEM Hydrogen desorption studies of NaAlH4 and LiAlH4 by in situ heating in an ESEM](/preview/png/1273567.png)
As-received and ball milled/catalyzed samples of NaAlH4 and LiAlH4 were heated in an environmental scanning electron microscope (ESEM). Morphological changes during heating and hydrogen desorption were recorded in real time. Both as-received materials underwent dramatic morphological and destructive structural changes upon heating, whereas the ball milled/catalyzed samples showed a benign outgassing with little morphological change. These observations help explain why milled/catalyzed samples of metal hydrides perform better as reversible hydrogen storage materials than their uncatalyzed bretheren. Real time videos of the morphological changes observed during heating can be viewed online at the McGrady group website: http://www.unb.ca/fredericton/science/chem/smcgrady/group/shanebeattie/InsituESEM-alanates.html.
Journal: International Journal of Hydrogen Energy - Volume 34, Issue 22, November 2009, Pages 9151–9156