Water soluble laurate-stabilized ruthenium(0) nanoclusters catalyst for hydrogen generation from the hydrolysis of ammonia-borane: High activity and long lifetime


DURAP F., Zahmakiran M., ÖZKAR S.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol.34, no.17, pp.7223-7230, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 17
  • Publication Date: 2009
  • Doi Number: 10.1016/j.ijhydene.2009.06.074
  • Journal Name: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.7223-7230
  • Keywords: Hydrogen, Ammonia-borane, Catalyst, Ruthenium, Nanoclusters, Hydrolysis, NANOPARTICLES, DEHYDROGENATION, DISSOCIATION, CLUSTERS, SYSTEM, NI
  • Middle East Technical University Affiliated: Yes

Abstract

The simplest amine-borane, considered as solid hydrogen storage material, ammonia-borane (H(3)NBH(3)) can release hydrogen gas upon catalytic hydrolysis under mild conditions. Herein, we report the preparation of a novel catalyst, water dispersible laurate-stabilized ruthenium(0) nanoclusters from the dimethylamine-borane reduction of ruthenium(III) chloride in sodium laurate solution at room temperature. The ruthenium nanoclusters in average size of 2.6 +/- 1.2 nm were isolated from the solution and well characterized by using TEM, XPS, FTIR, and UV-visible electronic absorption spectroscopy, The water dispersible laurate-stabilized ruthenium(0) nanoclusters were found to be highly active and long-live catalyst with a TOF of 75 mol H(2)/mol Ru.min and TTO value of 5900 mol H(2)/mol Ru in the hydrolysis of ammonia-borane at 25.0 +/- 0.1 degrees C.(C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.