Transition metal catalysed ammonia-borane dehydrogenation in ionic liquids

Abstract

Significant advantages result from combining the disparate hydrogen release pathways for ammonia-borane (AB) dehydrogenation using ionic liquids (ILs) and transition metal catalysts. With the RuCl(2)(PMe(3))(4) catalyst precursor, AB dehydrogenation selectivity and extent are maximized in an IL with a moderately coordinating ethylsulfate anion.

Application of Ionic Liquids in Hydrogen Storage Systems

“…Sneddon and co-workers reported that ILs, loaded with different precious metal (Rh, Ru, Pd) or Ni-based precatalysts, decrease the onset temperature (45-85°C) of AB-decomposition significantly improving hydrogen yield at the same time ( Figure 12). (Wright et al, 2011) Figure 12. Hydrogen evolution from AB-decomposition at 65 °C catalyzed by different metal catalystprecursors.…”

“…Hydrogen evolution from AB-decomposition at 65 °C catalyzed by different metal catalystprecursors. Reproduced from (Wright et al, 2011) with permission of The Royal Society of Chemistry.…”

“…(Bluhm et al, 2006;Wright et al, 2011) In some extent these approaches can be applied in combination. (Wright et al, 2011) …”

“…(Dupont & Suarez, 2006) Hydrogen-enriched materials or blends are as well in the focus of current research as catalytic decomposition. (Groshens & Hollins, 2009;Hugle et al, 2009;Jaska et al, 2003;Mal et al, 2011;Wright et al, 2011) ILs are investigated for their ability of supporting decomposition as well as solution of certain materials, including in some cases spent fuel products. (Bluhm et al, 2006;Wright et al, 2011) In some extent these approaches can be applied in combination.…”

Hydrogen storage in amine boranes: Ionic liquid supported thermal dehydrogenation of ethylene diamine bisborane

“…The influence of transition metal salts on this system was investigated [25]. At low temperatures these metal salts improve hydrogen yield from AB decomposition in [BMIM]Cl considerably.…”