Hydrogen generation from sodium borohydride solutions for stationary applications. (15th June 2016)

• Record Type: Journal Article
• Authors: Minkina, Valentina G.; Shabunya, Stanislav I.; Kalinin, Vladimir I.; Smirnova, Alevtina
• Is Part Of: International journal of hydrogen energy. Volume 41:Number 22(2016)
• Page Start: 9227
• Page End: 9233
• Publication Date: 2016-06-15
• Subjects: Hydrogen generation -- Circulation reactor -- Sodium borohydride -- Sodium metaborate -- Hydrolysis -- Heterogeneous catalysis; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2016.03.063
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: A novel circulation type a hydrogen generator operating on sodium borohydride – sodium borate solution has been developed. The major parameters, such as operation temperature, concentration of the sodium borohydride and metaborate, catalytic activity, start up conditions, and removal of NaBO2 as a product of the sodium borohydride hydrolysis have been analyzed. Generation of hydrogen was evaluated for aqueous NaBH4 solutions in the range of 15–23 wt. % NaBH4 in presence of the alumina supported Pt, Pd, Rh and Ni catalysts. The main trends in hydrogen gas generation with respect to the solution temperature and pressure in the reactor were analyzed. The catalytic efficiency and the rate of the hydrogen gas generation (1.5 Nm 3 /h) at the average hydrogen yield of 97–98.5% is sufficient for operation of the PEMFC Nexa™ Power module from Ballard. Graphical abstract: Highlights: A circulation type hydrogen generator operating on solution of sodium borohydride and sodium borate was developed. Generation of H2 was confirmed for aqueous NaBH4 solutions in presence of the Al2 O3 supported Pt, Pd, Rh and Ni catalysts. Hydrogen generator was tested with PEMFC Nexa™ Power module from Ballard.