Dehydrogenation properties of chromium-based ammine borohydrides: CrCl3·nNH3/3LiBH4 (n = 3, 4 and 5)

Three new chromium-based ammine borohydrides were synthesized by ball milling CrCl3·nNH3 (n = 3-5) and LiBH4 in a molar ratio of 1:3. The chromium-based ammine borohydrides release H2 in the temperature range of 100-170 °C. With the assistance of 0.5 mol ZnCl2, the sample is able to release 7.4 wt.% of hydrogen with a purity of 98.8 mol%.154