Core-shell structured nickel and ruthenium nanoparticles: Very active and stable catalysts for the generation of COx-free hydrogen via ammonia decomposition

Lianghong Yao, Tianbao Shi, Yanxing Li, Jin Zhao, Weijie Ji*, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The present study demonstrates that the silica-encapsulated Ni and Ru nanoparticles (nano-Ni@SiO2 and nano-Ru@SiO2) are catalysts more active and stable than the currently known catalysts for the production of COx-free hydrogen through ammonia decomposition. The effects of SiO2 encapsulation are closely related to the nature of the enwrapped core elements. The core size and exposure can be modified upon acid treatment, and the core surface property can also be modified by La or Ce doping. Both approaches result in activity enhancement. The superior performance and stability of the core-shell structures are originated from the unique feature of microcapsular-like reactor.

Original languageEnglish
Pages (from-to)112-118
Number of pages7
JournalCatalysis Today
Volume164
Issue number1
DOIs
Publication statusPublished - 30 Apr 2011

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)

User-Defined Keywords

  • Ammonia decomposition
  • Core-shell structure
  • Nanoparticles
  • Nickel
  • Ruthenium
  • Silica

Fingerprint

Dive into the research topics of 'Core-shell structured nickel and ruthenium nanoparticles: Very active and stable catalysts for the generation of CO<sub>x</sub>-free hydrogen via ammonia decomposition'. Together they form a unique fingerprint.

Cite this