http://dx.doi.org/10.1016/j.cattod.2010.05.009">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Core–shell structured nanoparticles (M@SiO2, Al2O3, MgO; M = Fe, Co, Ni, Ru) and their application in COx-free H2 production via NH3 decomposition

Language

English

Abstract

The core-shell nanostructures (M@SiO2, Al2O 3, MgO; M = Fe, Co, Ni, Ru) are synthesized and applied in the production of COx-free H2 through NH3 decomposition. The characterization results indicate that the dimension and dispersion of the core particles is dependent on the core constitution, and the shell encapsulation effect (thickness of shell, single or hierarchical enwrapping) is determined by the nature of cores as well as the core-shell interaction. The core property can also be influenced by core starting material and nominal core/shell ratio. The obtained core-shell catalysts show not only superior activity but also better stability than the naked nanoparticles or the supported counterparts. The presence of stable shells provides the unique environment around cores, functioning as microcapsular-like reactors in which adsorption and catalytic reaction are enhanced on the cores. The stable shells effectively prevent the core particles from aggregation during reaction. © 2010 Elsevier B.V.

Keywords

Ammonia decomposition, Core-shell structure, Hydrogen, Nanoparticles

Publication Date

2010

Source Publication Title

Catalysis Today

Volume

158

Issue

4-3

Start Page

401

End Page

408

Publisher

Elsevier

ISSN (print)

09205861

This document is currently not available here.

Share

COinS