Difference in the cooperative interaction between carbon nanotubes and Ru particles loaded on their internal/external surface

Wang, Li and Chen, Jiuling and Ge, Lei and Rudolph, Victor and Zhu, Zhonghua (2013) Difference in the cooperative interaction between carbon nanotubes and Ru particles loaded on their internal/external surface. RSC Advances, 3 (31). pp. 12641-12647.

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Abstract

This paper examines differences in the cooperative interaction between carbon nanotubes (CNTs) and Ru particles loaded on their internal/external surface. The techniques used were transmission electron microscopy, X-ray photoelectron spectroscopy, CO chemisorption, X-ray diffraction, N2 physisorption, hydrogen temperature-programmed reduction and two probe catalysis reactions, namely ammonia decomposition and preferential oxidation of CO in H2-rich atmosphere (PROX). The results show that the loading of highly dispersed Ru particles on CNTs does not change the structure of the CNTs. The cooperative interaction between Ru particles and associated CNT surfaces is dependent on the position of Ru particles and the surface functional groups of CNTs. Due to the electron-deficient structure of Ru particles confined inside CNT channels, they have an inferior ammonia decomposition activity to those deposited on the CNT external surface. For PROX, the catalytic performance of Ru particles confined inside CNT channels is superior compared to that over Ru particles deposited outside CNTs, which we attribute to the selective reactant enrichment of CO over H2 inside the CNTs.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Access to Published version allowed due to publisher copyright policy.
Faculty / Department / School: No Faculty
Date Deposited: 05 May 2017 00:55
Last Modified: 05 May 2017 01:20
Uncontrolled Keywords: ammonia decomposition; catalytic performance; cooperative interactions; electron-deficient; external surfaces; preferential oxidation; surface functional groups; temperature-programmed reduction; catalyst activity; functional groups; photoelectrons; transmission electron microscopy; X ray diffraction; X ray photoelectron spectroscopy; carbon nanotubes
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090402 Catalytic Process Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1039/c3ra41208c
URI: http://eprints.usq.edu.au/id/eprint/31143

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