Blanco, PH, Wu, C, Onwudili, JA et al. (1 more author) (2013) Characterization and evaluation of Ni/SiO catalysts for hydrogen production and tar reduction from catalytic steam pyrolysis-reforming of refuse derived fuel. Applied Catalysis B: Environmental, 134-13. 238 - 250. ISSN 0926-3373
Abstract
A series of Ni/SiO catalysts have been prepared and investigated for their suitability for hydrogen production and tar reduction in a two-stage pyrolysis-reforming system, using refuse derived fuel (RDF) as the raw material. Experiments were conducted at a pyrolysis temperature of 600°C, and a reforming temperature of 800°C. The product gases were analysed by gas chromatography (GC) and the condensed fraction was collected and quantified using gas chromatography-mass spectrometry (GC-MS). The effects of the catalyst preparation method, nickel content and the addition of metal promoters (Ce, Mg, Al), were investigated. Catalysts were characterised using BET surface area analysis, temperature programmed oxidation (TPO), and scanning electron microscopy (SEM). The TPO and SEM analysis of the reacted catalysts showed that amorphous type carbons tended to be deposited over the Ni/SiO catalysts prepared by impregnation, while filamentous type carbons were favoured with the sol-gel prepared catalysts. The influence of catalyst promoters (Ce, Mg, Al) added to the Ni/SiO catalyst prepared by the sol-gel method was found not to be significant, as the H production was not increased and the tar formation was not reduced with the metal-added catalyst. The highest H concentration of 57.9vol.% and lower tar amount produced of 0.24mg/g; were obtained using the 20wt.% Ni/SiO catalyst prepared by sol-gel. On the other hand a low catalytic activity for H production and higher tar produced were found for the impregnated series of catalysts, which might be due to the smaller surface area, pore size and due to the formation of amorphous carbons on the catalyst surface. Alkenes and alcohol functional groups were mainly found in the analysed tar samples, with major concentrations of styrene, phenol, indene, cresols, naphthalene, fluorene, and phenanthrene.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | (c) 2013, Elsevier. Uploaded in accordance with the publisher's self-archiving policy. NOTICE: this is the author’s version of a work that was accepted for publication in Applied Catalysis B: Environmental. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Catalysis B: Environmental, 134-135,(2013)] DOI 10.1016/j.apcatb.2013.01.016 |
Keywords: | Tar; Nickel catalysts; Pyrolysis; Reforming; RDF; Syngas |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 Oct 2014 13:50 |
Last Modified: | 27 Oct 2016 11:52 |
Published Version: | http://dx.doi.org/10.1016/j.apcatb.2013.01.016 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.apcatb.2013.01.016 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:80811 |