Pd-MnOx nanoparticles dispersed on amine-grafted silica: Highly efficient nanocatalyst for hydrogen production from additive-free dehydrogenation of formic acid under mild conditions

Bulut A., Yurderi M., Karataş Y., Zahmakıran M., Kivrak H. , Gülcan M., ...More

Applied Catalysis B: Environmental, vol.164, pp.324-333, 2015 (Journal Indexed in SCI Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 164
  • Publication Date: 2015
  • Doi Number: 10.1016/j.apcatb.2014.09.041
  • Title of Journal : Applied Catalysis B: Environmental
  • Page Numbers: pp.324-333


© 2014 Elsevier B.V.Herein we report the development of a new highly active, selective and reusable nanocatalyst for additive-free dehydrogenation of formic acid (HCOOH), which has great potential as a safe and convenient hydrogen carrier for fuel cells, under mild conditions. The new catalyst system consisting of bimetallic Pd-MnOx nanoparticles supported on aminopropyl functionalized silica (Pd-MnOx/SiO2-NH2) was simply and reproducibly prepared by deposition-reduction technique in water at room temperature. The characterization of Pd-MnOx/SiO2-NH2 catalyst was done by the combination of multipronged techniques, which reveals that the existence of highly crystalline individually nucleated Pd(0) and MnOx nanoparticles (dmean=4.6±1.2nm) on the surface of aminopropyl functionalized silica. These supported Pd-MnOx nanoparticles can catalyze the additive-free dehydrogenation of formic acid with record activity (TOF=1300h-1) at high selectivity (>99%) and conversion (>99%) under mild conditions (at 50°C and under air). Moreover, easy recovery plus high durability of these supported Pd-MnOx nanoparticles make them a reusable heterogeneous catalyst in the additive-free dehydrogenation of formic acid.