Halloysite-nanotube-supported ru nanoparticles for ammonia catalytic decomposition to produce COx-Free hydrogen

Wang, Li and Chen, Jiuling and Ge, Lei and Zhu, Zhonghua and Rudolph, Victor (2011) Halloysite-nanotube-supported ru nanoparticles for ammonia catalytic decomposition to produce COx-Free hydrogen. Energy and Fuels, 25 (8). pp. 3408-3416. ISSN 0887-0624

Abstract

Natural halloysite nanotubes (HNTs) were employed as the support of Ru nanoparticles, and the corresponding activity was tested in an ammonia catalytic decomposition reaction for the production of COx-free hydrogen as the feed gas for proton exchange membrane fuel cell. N2 physisorption, X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, hydrogen temperature-programmed reduction, and X-ray photoelectron spectroscopy were used to investigate the morphology and structure of HNTs and Ru/HNTs. The results show that HNTs possess a suitable specific surface area and pore volume, as well as a tubular structure with good thermal stability. The supported Ru nanoparticles are mostly located on the external surface of HNTs, whereas the interaction is weak between Ru particles and Si-O groups on the surface of HNTs. The dispersion of Ru particles decreases with the increase of the Ru loading content. The ammonia conversion increases with the Ru loading content from 0.3 to 5.6 wt %, and the turnover frequency of ammonia reaches a peak value at a Ru loading content of 1.1 wt %.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 25 May 2017 05:41
Last Modified: 08 Jun 2017 01:30
Uncontrolled Keywords: ammonia conversion; catalytic decomposition; external surfaces; feed gas; halloysite nanotubes; peak values; pore volume; Ru nanoparticles; temperature-programmed reduction; tubular structures; turnover frequency; fourier transform infrared spectroscopy; hydrogen; kaolinite; loading; nanoparticles; nanotubes; photoelectron spectroscopy; physisorption; proton exchange membrane fuel cells (PEMFC); transmission electron microscopy; tubular steel structures; x-ray diffraction; x-ray diffraction analysis; x-ray photoelectron spectroscopy; ammonia
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090402 Catalytic Process Engineering
Identification Number or DOI: 10.1021/ef200719v
URI: http://eprints.usq.edu.au/id/eprint/31153

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