Cobalt-catalyzed hydrogen desorption from the LiNH2-LiBH4 system.
A doping of 5 wt% CoCl2 considerably decreases the dehydrogenation temperature of a mixture of LiNH2 and LiBH4. More that 8 wt% of hydrogen can be released at ca. 155 degrees C. X-Ray absorption near edge structure (XANES) spectroscopy indicated the formation of metallic Co after ball milling CoCl2 with LiNH2 and LiBH4. Extended X-ray absorption fine structure (EXAFS) spectroscopy measurements revealed that Co particles have poor crystallinity and are finely dispersed in the sample, which could lead to a high catalytic efficiency.
Tang
Wan Si
WS
Department of Chemistry, National University of Singapore, Singapore117542.
Wu
Guotao
G
Liu
Tao
T
Wee
Andrew T S
AT
Yong
Chaw Keong
CK
Xiong
Zhitao
Z
Hor
Andy T S
AT
Chen
Ping
P