UNIGE document Scientific Article
previous document  unige:83818  next document
add to browser collection

Reaction Pathways in Ca(BH4)2–NaNH2 and Mg(BH4)2–NaNH2 Hydrogen-Rich Systems

Morelle, Fabrice
Jepsen, Lars H.
Jensen, Torben R.
Published in Journal of Physical Chemistry. C. 2016, vol. 120, no. 16, p. 8428-8435
Abstract Two reactive hydride composite systems, Ca(BH4)2–NaNH2 and Mg(BH4)2–NaNH2, were systematically studied by in situ synchrotron radiation powder diffraction, in situ Fourier transform infrared spectroscopy, thermogravimetric analysis and differential scanning calorimetry coupled with mass spectrometry. Metathesis reactions between the amides and borohydrides take place in both systems between 100°C and 150°C yielding amorphous materials with the proposed composition M(BH4)(NH2). Simultaneously, a fraction of NaNH2 decomposes to Na3N and ammonia via a complex pathway. The main gas released under 300°C is ammonia for both systems, while significant amounts of hydrogen are released only above 350°C.
Full text
Article (Published version) (524 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Research group Groupe Sugihara
(ISO format)
MORELLE, Fabrice et al. Reaction Pathways in Ca(BH4)2–NaNH2 and Mg(BH4)2–NaNH2 Hydrogen-Rich Systems. In: Journal of Physical Chemistry. C, 2016, vol. 120, n° 16, p. 8428-8435. doi: 10.1021/acs.jpcc.6b00209 https://archive-ouverte.unige.ch/unige:83818

464 hits

0 download


Deposited on : 2016-05-24

Export document
Format :
Citation style :