Can I read On the reversibility of hydrogen storage in Ti- and Nb-catalyzed Ca(BH4)2 on EtoBox?

On the reversibility of hydrogen storage in Ti- and Nb-catalyzed Ca(BH4)2 by Jae-Hun Kim; Jae-Hyeok Shim; Young Whan Cho is a Engineering article available to read on EtoBox.

What is On the reversibility of hydrogen storage in Ti- and Nb-catalyzed Ca(BH4)2 about?

The hydrogen sorption properties of calcium borohydride (Ca(BH 4 ) 2 ) catalyzed with a small amount of TiF 3 , TiCl 3 , NbF 5 or NbCl 5 are investigated using thermal analyses and X-ray diffraction. NbF 5 exhibits the best performance among all the catalysts; it causes a decrease in the hydrogen desorption temperature which leads to hydrogen absorption at practical temperature and pressure conditions. The hydrogen content of Ca(BH 4 ) 2 with NbF 5 reaches about 5.0 wt.% after hydrogen absorption at 693 K for 24 h under 90 bar of hydrogen. The main dehydrogenation product of Ca(BH 4 ) 2 with NbF 5 is a CaH 2-x F x solid solution with a CaF 2 (C1) structure, while pure Ca(BH 4 ) 2 produces CaH 2 after hydrogen desorption.

Who reads On the reversibility of hydrogen storage in Ti- and Nb-catalyzed Ca(BH4)2?

Author

Jae-Hun Kim; Jae-Hyeok Shim; Young Whan Cho

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-7753)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)