Hydrogen Production from Morpholine-Borane by Aluminum Oxide-Supported Pd Nanoparticles

Morpholine borane (MB) is a promising hydrogen storage material and developing effective catalysts for the catalytic hydrolysis reaction of MB has become a fascinating topic in catalysis. Here, we report the preparation of Al2O3-supported Pd nanoparticles (Pd/Al2O3) by an impregnation-reduction method and their utilization as catalysts in the catalytic hydrolysis reaction of MB for hydrogen (H-2) production. These Pd/Al2O3 are characterized by a combination of several advanced analytical techniques. Pd/Al2O3 catalysts with a mean diameter of 3.12. 0.35 nm provide H-2 production with a turnover frequency (TOF) value of 495.3 mol(H-2) center dot molPd(-1) center dot h(-1) in the hydrolysis of MB in complete conversion at 298 K. Additionally, the activation energy (Ea#), activation enthalpy (Delta H#), and activation entropy (Delta S#) values of Pd/Al2O3 catalysts in the hydrolysis reaction of MB are calculated as 30.36 kJ center dot mol(-1), 28.42 kJ center dot mol(-1), and -158.52 J center dot mol(-1) center dot K-1, respectively, from Arrhenius and EyringPolanyi equations.

Automated summary

The utilization of Pd/Al2O3 catalysts in the catalytic hydrolysis reaction of MB for hydrogen production was investigated. The results showed that the catalysts had high activation energy and activation enthalpy at 298K. Additionally, the mean diameter of the Pd/Al2O3 catalysts was 3.12±0.35 nm.