Dynamic Modeling of Hydrogen Generation via Hydrolysis of Sodium Borohydride

This paper deals with the dynamic modeling of a hydrogen production system using gPROMS. The model includes mass balances, liquid-gas equilibrium relations, mass transfer laws and kinetic reaction equations. The initial reaction mixture is a sodium borohydride solution that reacts via a self-hydrolysis mechanism in the presence of water. The behavior of this system was measured in terms of produced hydrogen volume and solution pH. The kinetic parameters associated with each reaction mechanism step were estimated from experimental data. The validated model was then used to successfully predict the behavior of the system for different initial conditions.