Zeolite framework stabilized rhodium(0) nanoclusters catalyst for the hydrolysis of ammonia-borane in air: Outstanding catalytic activity, reusability and lifetime


Zahmakiran M., ÖZKAR S.

APPLIED CATALYSIS B-ENVIRONMENTAL, vol.89, pp.104-110, 2009 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 89
  • Publication Date: 2009
  • Doi Number: 10.1016/j.apcatb.2008.12.004
  • Journal Name: APPLIED CATALYSIS B-ENVIRONMENTAL
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.104-110
  • Keywords: Ammonia-borane, Hydrogen generation, Hydrolysis, Zeolite, Rhodium, Nanoclusters, THERMAL-DECOMPOSITION, HYDROGEN GENERATION, STORAGE, DEHYDROGENATION, NANOPARTICLES, CLUSTERS, RELEASE, COBALT

Abstract

Zeolite framework stabilized rhodium(0) nanoclusters; were prepared by a two steps procedure: incorporation of Rh3+ ions into the Zeolite-Y by ion-exchange followed by in situ reduction of Rh3+ ions during the catalytic hydrolysis of ammonia-borane. They are stable enough to be isolated as solid materials and characterized by HRTEM, XPS, XRD, SEM, EDX, and N-2 adsorption. These nanoclusters are isolable, bottleable, redispersible, and reusable as an active catalyst in the hydrolysis of ammonia-borane even at low temperatures. Zeolite framework stabilized rhodium(0) nanoclusters; provide exceptional catalytic activity (TOF = 92 mol H-2/mol Rh min) and unprecedented lifetime (TTON = 47200 mol H-2/mol Rh) in the hydrolysis of ammonia-borane at 25 +/- 0.1 degrees C. (C) 2009 Elsevier B.V. All rights reserved.