Effects of pre-treatment in air microwave plasma on the structure of CNTs and the activity of Ru/CNTs catalysts for ammonia decomposition

Chen, J, Zhu, ZH, Ma, Q, Li, L, Rudolph, V and Lu, GQ (2009) Effects of pre-treatment in air microwave plasma on the structure of CNTs and the activity of Ru/CNTs catalysts for ammonia decomposition. Catalysis Today, 148 1-2: 97-102. doi:10.1016/j.cattod.2009.02.005


Author Chen, J
Zhu, ZH
Ma, Q
Li, L
Rudolph, V
Lu, GQ
Title Effects of pre-treatment in air microwave plasma on the structure of CNTs and the activity of Ru/CNTs catalysts for ammonia decomposition
Journal name Catalysis Today   Check publisher's open access policy
ISSN 0920-5861
Publication date 2009-10-30
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.cattod.2009.02.005
Volume 148
Issue 1-2
Start page 97
End page 102
Total pages 6
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Collection year 2010
Language eng
Subject C1
090499 Chemical Engineering not elsewhere classified
970109 Expanding Knowledge in Engineering
Formatted abstract
Carbon nanotubes (CNTs) were treated in air microwave plasma at three different microwave powers 80, 100 and 150 W. The effects of the treatment on the Structure of CNTs and the dispersion of Ru particles supported on CNTs were evaluated using XRD, N2 physisorption, FTIR, TPD, XPS, TEM and CO chemisorptions. The results show that the bulk structure and the texture of the CNTs were unchanged, but phenolic hydroxyls and carboxyls appeared on the surface. The total concentration of these groups increases with the microwave power to 100 W, then decreases. The phenolic hydroxyls and carboxyls on the CNTs interact with Ru ions during the preparation of Ru/CNTs resulting in highly dispersed Ru particles. The activity of Ru/CNTs for ammonia decomposition depends on the dispersion of Ru particles, but is negatively affected by any remaining oxygen-containing groups on the surface.
© 2009 Elsevier B.V. All rights reserved.

Keyword Ammonia decomposition
Carbon nanotubes
Ru catalyst
Hydrogen production
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Chemical Engineering Publications
 
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Created: Sun, 29 Nov 2009, 00:04:44 EST