Monodisperse Ru-Rh bimetallic nanocatalyst as highly efficient catalysts for hydrogen generation from hydrolytic dehydrogenation of methylamine-borane


Tacyildiz S., Demirkan B., Karataş Y. , Gülcan M. , ŞEN F.

JOURNAL OF MOLECULAR LIQUIDS, vol.285, pp.1-8, 2019 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 285
  • Publication Date: 2019
  • Doi Number: 10.1016/j.molliq.2019.04.019
  • Title of Journal : JOURNAL OF MOLECULAR LIQUIDS
  • Page Numbers: pp.1-8
  • Keywords: Hydrogen, Methylamine borane, Nanocatalyst, Rhodium, Ruthenium, CORE-SHELL NANOPARTICLES, METAL-ORGANIC FRAMEWORK, AMMONIA BORANE, RHODIUM NANOPARTICLES, AMINE-BORANES, THERMAL DEHYDROGENATION, RUTHENIUM NANOPARTICLES, RH(0) NANOPARTICLES, SUPPORTED RHODIUM, FACILE SYNTHESIS

Abstract

In this study, the polyvinylpyrrolidone (PVP) stabilized Ru and Rh (Ru-Rh@PVP) nanocatalyst was prepared using the precursor materials of Ru, Rh and also PVP as a polymeric material, characterized and its catalytic activity was investigated by using in the hydrolytic dehydrogenation of methylamine-borane (MeAB) at room temperature. The structural and morphological properties of the Ru-Rh@PVP nanocatalyst was examined by using analytical techniques such as TEM/EELS, HRTEM, XPS, P-XRD and UV-Vis spectra. These analytical techniques revealed that Ru-Rh based nanoparticles were well distributed on the PVP with a particle size of 3.42 +/- 0.33 nm. The preparation of catalyst was done according to alcohol reduction technique and then prepared Ru-Rh@PVP nanocatalyst was tested in the hydrolytic dehydrogenation of methylamine-borane at various MeAB-Ru-Rh@PVP concentrations, temperatures and reusability performance at room temperature. The one of the best TOF (initial turnover frequency) and E-a (activation energy) values were found to be 206.2 min(-1) and 43.5 kJ/mol, respectively. (C) 2019 Elsevier B.V. All rights reserved.