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Pyrolysis-catalytic reforming/gasification of waste tires for production of carbon nanotubes and hydrogen

Zhang, Yeshui; Wu, Chunfei; Nahil, Mohamad A.; Williams, Paul


Yeshui Zhang

Chunfei Wu

Mohamad A. Nahil

Paul Williams


The production of high-value carbon nanotubes and hydrogen from the two-stage pyrolysis catalytic-steam reforming/gasification of waste tires have been investigated. The catalysts used were Co/Al₂ O₃ , Cu/Al₂ O₃ , Fe/Al₂ O₃ and Ni/Al₂ O₃ . The pyrolysis temperature and catalyst temperature were 600 °C and 800 °C, respectively. The fresh catalysts were analysed by temperature programmed reduction and X-ray diffraction. The product gases, including hydrogen were analysed by gas chromatography and the carbon nanotubes characterized by scanning and transmission electron microscopy and Raman spectrometry. The results showed that the Ni/Al₂ O₃ catalyst produced high quality multiwalled carbon nanotubes along with the highest H₂ yield of 18.14 mmol g⁻¹ tire, compared with the other catalysts, while the Co/Al₂ O₃ and Cu/Al₂ O₃ catalysts produced lower hydrogen yield, which is suggested to be associated with the formation of amorphous type carbons on the surface of the Co/Al₂ O₃ and Cu/Al₂ O₃ catalysts

Publication Date May 21, 2015
Journal Energy & fuels
Print ISSN 0887-0624
Electronic ISSN 1520-5029
Publisher American Chemical Society
Peer Reviewed Peer Reviewed
Volume 29
Issue 5
Pages 3328-3334
APA6 Citation Zhang, Y., Wu, C., Nahil, M. A., & Williams, P. (2015). Pyrolysis-catalytic reforming/gasification of waste tires for production of carbon nanotubes and hydrogen. Energy and Fuels, 29(5), 3328-3334.
Keywords Pyrolysis, Plastics, Carbon nanotubes, Hydrogen, Catalysis
Publisher URL
Copyright Statement ©2016 University of Hull
Additional Information This document is the Accepted Manuscript version of a Published Work that appeared in final form in Energy & fuels, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see


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