Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Core-shell structured iron nanoparticles for the generation of COx-free hydrogen via ammonia decomposition

Language

English

Abstract

The iron nanoparticles that are encapsulated by microporous and mesoporous silica shells were synthesized for the generation of COx-free hydrogen through the catalytic decomposition of ammonia. The encapsulated iron nanoparticles show excellent catalytic activity, giving 100% ammonia conversion in the 650-670 °C range. The core-shell structured catalysts are highly stable under the adopted reaction conditions owing to the stable silica shells that effectively prevent aggregation of iron nanoparticles. In contrast, the naked iron nanoparticles deactivated gradually at 670 °C and lost 18% ammonia conversion in a period of 63 h. © 2009 Elsevier B.V. All rights reserved.

Keywords

Ammonia decomposition, COx-free hydrogen, Core-shell structure, Iron nanoparticles, Silica

Publication Date

2010

Source Publication Title

Catalysis Communications

Volume

11

Issue

5

Start Page

368

End Page

372

Publisher

Elsevier

DOI

10.1016/j.catcom.2009.11.003

ISSN (print)

15667367

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