An ultrasafe hydrogen generator: aqueous, alkaline borohydride solutions and Ru catalyst

Structure and Properties of NaBH4·2H2O and NaBH4

“…[4] Although the reactions with water are usually fast, the reaction kinetics under practical conditions is rather slow, thus suggesting the use of expensive catalysts. [5] Catalytically accelerated NaBH 4 hydrolysis for the generation of hydrogen has been studied since the 1950s, [6] and it is now under intensive investigation, [5] leading to a number of recent applications. [7] However, until now, there is no experimental structural information on intermediate phases or reaction pathways in the NaBH 4 + H 2 O system.…”

Evaluation of a New Hydrogen Generating System: Ni-Rich Magnesium Alloy Catalyzed by Platinum Wire in Sodium Chloride Solution

“…The weight loss of the Ni-rich AZ91D sample after the H 2 generation experiments was about 0.22 and 0.47 g for the 70 and 25 C experiments, respectively. The data of a previous study 6) about H 2 generation from the aqueous borohydride (NaBH 4 ) solution and Ru catalyst were also plotted in Fig. 6.…”

“…5) To ensure long-term sustainability and the supply of fuel, a new renewable of H 2 generator have to be introduced. Amendola et al 6,7) have explored a new method to generate hydrogen gas from sodium borohydride (NaBH 4 ), sodium hydroxide (NaOH) and H 2 O mixed solution with Rubased catalyst. When NaBH 4 aqueous solution contacted with the catalyst, it spontaneously hydrolyzes to form H 2 gas and sodium borate (NaBO 2 ).…”

Amineborane Based Chemical Hydrogen Storage - Final Report

“…More rapid hydrogen release was achieved without acids by using metals to catalyze the hydrolysis reaction (Equation 6.9 Hydrogen release from NaBH 4 and NH 3 BH 3 has previously been attained by metalcatalyzed hydrolysis, with Ru-catalysts 80,81 for NaBH 4 and Pt-catalysts 82 for NH 3 BH 3 exhibiting the highest reactivities. A variety of these and other potential catalysts were screened for activating the hydrolysis of 1, including Rh(0), Ru(0), Pd(0), and Pt(0)) supported on alumina or carbon; RhCl 3 , [Rh(COD)Cl] 2 , RuCl 3 , and NiCl 2 metal halides; and nano-or micro-sized metal or NiB 2 powders.…”