Various compositions of CoeNieP catalysts supported on a palladium-activated Al2O3 (Pd
eAl2O3) substrate were synthesized, characterized and investigated for catalytic methanolysis
of ammonia-borane (AB, H3NBH3). The CoeNieP/PdeAl2O3 catalysts were synthesized
by polymer-stabilized Pd nanoparticle-catalyzation and activation of the Al2O3
substrate support and the electroless deposition of cobalt-nickel (CoeNi) metal particles on
the surface of the Al2O3 support for a plating time of 30 min. The CoeNieP/PdeAl2O3
catalysts are stable enough to be isolated as solid materials and characterized by X-ray
Diffraction (XRD), Energy Dispersive X-ray Spectroscopy (EDS) and Scanning Electron Microscopy
(SEM). At 40 ± 0.5 �C, the isolable, re-dispersible and reusable catalysts were found
active in the methanolytic dehydrogenation of ammonia-borane retaining up to 65% of its
initial activity after five cycles. Rates of hydrogen evolution were used to determine the
kinetics of methanolysis reaction. The ranges of examined catalyst particle amounts, AB
concentrations and temperatures were 15.75e63 mg, 50e200 mM, and 30e55 �C, respectively.
Hydrogen desorption was identified as the rate controlling step in the methanolysis
reaction and using the data, the kinetic rate constant (€kH2 ), the hydrogen desorption
equilibrium constant (KH2 ), and the overall equilibrium constant (K1) parameters in a
LangmuireHinshelwood rate expression were determined to be 1.4 mol/g-cat. s, 1.5918 L/
mol and 1.5986 L/mol, respectively. Activation parameters such as enthalpy of activation
(DH), entropy of activation (DS), and activation energy (Ea) that were obtained by Eyring and
Arrhenius equations are reported for the various catalyst ratio
