Pd@C3N4 Nanocatalyst for Highly Efficient Hydrogen Storage System Based on Potassium Bicarbonate/Formate

Formate/bicarbonate system has several desirable properties such as noncorrosive and nonirritating nature, as well as facile handling, which make it an attractive candidate for a safe, reversible hydrogen storage material. Herein, Pd nanoparticles supported on mesoporous graphitic carbon nitride (mpg-C3N4) for formate-based reversible hydrogen storage is reported. The as-developed Pd/mpg-C3N4 material was shown to be a superior catalyst for the hydrogenation of high concentrations of bicarbonate to formate under mild conditions. The effects of reaction temperature, H-2 pressure, and bicarbonate concentration on the hydrogenation of bicarbonate to formate were investigated. The catalytic performance remained steady with high activity up to six hydrogenation cycles. The interaction between mpg-C3N4 and Pd nanoparticles and the concerted effects of the nitrogen species located at mpg-C3N4 and bicarbonate played a synergetic role in the enhancement of the performance of the catalyst for hydrogenation. (c) 2016 American Institute of Chemical Engineers