Affordable Access

Publisher Website

Hollow Ni–SiO2nanosphere-catalyzed hydrolytic dehydrogenation of ammonia borane for chemical hydrogen storage

Authors
Journal
Journal of Power Sources
0378-7753
Publisher
Elsevier
Publication Date
Volume
191
Issue
2
Identifiers
DOI: 10.1016/j.jpowsour.2009.02.054
Keywords
  • Nickel Clusters
  • Hollow Sphere
  • Hydrolysis
  • Ammonia Borane
  • Hydrogen Generation

Abstract

Abstract Nickel clusters contained within silica nanospheres (20–30 nm) were synthesized by using a Ni(NH 3) 6Cl 2 crystal template method in a polyoxyethylene–nonylphenyl ether/cyclohexane reversed micelle system followed by an in situ reduction in aqueous NaBH 4/NH 3BH 3 solutions. Metallic nickel clusters exist inside the SiO 2 nanospheres prepared by the method while oxidized nickel clusters prepared by the conventional impregnation method were supported on the outer surface of silica as shown in the results of transmission electron microscope (TEM)/energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) measurements. The nickel clusters inside of silica nanospheres show higher catalytic activity for hydrolysis of ammonia borane to generate stoichiometric amount of hydrogen than the supported nickel catalysts.

There are no comments yet on this publication. Be the first to share your thoughts.